Move out many of the common class driver constants into grouped enums, to make them more managable.

Add new CDC descriptor structs to the CDC class driver, so that the CDC demos can use human readable field names.

Rename prefix for Still Image Host class driver functions from "SImage_" to "SI_" to remain consistent with the rest of the driver.

31 files changed, 202 insertions, 215 deletions

diff --git a/Demos/Device/ClassDriver/AudioInput/Descriptors.c b/Demos/Device/ClassDriver/AudioInput/Descriptors.c
index ba8c00182..991b33e30 100644
--- a/Demos/Device/ClassDriver/AudioInput/Descriptors.c
+++ b/Demos/Device/ClassDriver/AudioInput/Descriptors.c
@@ -104,8 +104,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.Audio_ControlInterface_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Interface_AC_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_Header,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Interface_AC_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_Header,
 
 			.ACSpecification          = VERSION_BCD(01.00),
 			.TotalLength              = (sizeof(USB_Audio_Descriptor_Interface_AC_t) +
@@ -113,13 +113,13 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 			                             sizeof(USB_Audio_Descriptor_OutputTerminal_t)),
 			
 			.InCollection             = 1,
-			.InterfaceNumbers         = {1},
+			.InterfaceNumber          = 1,
 		},
 
 	.Audio_InputTerminal = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_InputTerminal_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_InputTerminal,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_InputTerminal_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_InputTerminal,
 
 			.TerminalID               = 0x01,
 			.TerminalType             = TERMINAL_IN_MIC,
@@ -134,8 +134,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.Audio_OutputTerminal = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_OutputTerminal_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_OutputTerminal,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_OutputTerminal_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_OutputTerminal,
 
 			.TerminalID               = 0x02,
 			.TerminalType             = TERMINAL_STREAMING,
@@ -180,8 +180,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.Audio_StreamInterface_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Interface_AS_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_General,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Interface_AS_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_General,
 
 			.TerminalLink             = 0x02,
 
@@ -191,8 +191,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.Audio_AudioFormat = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Format_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_Format,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Format_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_FormatType,
 
 			.FormatType               = 0x01,
 			.Channels                 = 0x01,
@@ -222,8 +222,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.Audio_StreamEndpoint_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_StreamEndpoint_Spc_t), .Type = DTYPE_AudioEndpoint},
-			.Subtype                  = DSUBTYPE_General,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_StreamEndpoint_Spc_t), .Type = DTYPE_CSEndpoint},
+			.Subtype                  = AUDIO_DSUBTYPE_CSEndpoint_General,
 			
 			.Attributes               = 0x00,
 			
diff --git a/Demos/Device/ClassDriver/AudioOutput/Descriptors.c b/Demos/Device/ClassDriver/AudioOutput/Descriptors.c
index 9f385017a..57668f2df 100644
--- a/Demos/Device/ClassDriver/AudioOutput/Descriptors.c
+++ b/Demos/Device/ClassDriver/AudioOutput/Descriptors.c
@@ -104,8 +104,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 	
 	.Audio_ControlInterface_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Interface_AC_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_Header,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Interface_AC_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_Header,
 			
 			.ACSpecification          = VERSION_BCD(01.00),
 			.TotalLength              = (sizeof(USB_Audio_Descriptor_Interface_AC_t) +
@@ -113,13 +113,13 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 			                             sizeof(USB_Audio_Descriptor_OutputTerminal_t)),
 			
 			.InCollection             = 1,
-			.InterfaceNumbers         = {1},
+			.InterfaceNumber          = 1,
 		},
 
 	.Audio_InputTerminal = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_InputTerminal_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_InputTerminal,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_InputTerminal_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_InputTerminal,
 		
 			.TerminalID               = 0x01,
 			.TerminalType             = TERMINAL_STREAMING,
@@ -134,8 +134,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.Audio_OutputTerminal = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_OutputTerminal_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_OutputTerminal,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_OutputTerminal_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_OutputTerminal,
 		
 			.TerminalID               = 0x02,
 			.TerminalType             = TERMINAL_OUT_SPEAKER,
@@ -180,8 +180,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.Audio_StreamInterface_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Interface_AS_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_General,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Interface_AS_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_General,
 			
 			.TerminalLink             = 0x01,
 			
@@ -191,8 +191,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.Audio_AudioFormat = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Format_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_Format,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Format_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_FormatType,
 
 			.FormatType               = 0x01,
 			.Channels                 = 0x02,
@@ -222,8 +222,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.Audio_StreamEndpoint_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_StreamEndpoint_Spc_t), .Type = DTYPE_AudioEndpoint},
-			.Subtype                  = DSUBTYPE_General,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_StreamEndpoint_Spc_t), .Type = DTYPE_CSEndpoint},
+			.Subtype                  = AUDIO_DSUBTYPE_CSEndpoint_General,
 			
 			.Attributes               = EP_ACCEPTS_SMALL_PACKETS,
 			
diff --git a/Demos/Device/ClassDriver/DualVirtualSerial/Descriptors.c b/Demos/Device/ClassDriver/DualVirtualSerial/Descriptors.c
index 617cebd46..20ba4936c 100644
--- a/Demos/Device/ClassDriver/DualVirtualSerial/Descriptors.c
+++ b/Demos/Device/ClassDriver/DualVirtualSerial/Descriptors.c
@@ -128,28 +128,29 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 			.InterfaceStrIndex      = NO_DESCRIPTOR
 		},
 
-	.CDC1_Functional_IntHeader = 
+	.CDC1_Functional_Header = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)), .Type = 0x24},
-			.SubType                = 0x00,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalHeader_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_Header,
 			
-			.Data                   = {0x01, 0x10}
+			.CDCSpecification       = VERSION_BCD(01.10),
 		},
 
-	.CDC1_Functional_AbstractControlManagement = 
+	.CDC1_Functional_ACM = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(1)), .Type = 0x24},
-			.SubType                = 0x02,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalACM_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_ACM,
 			
-			.Data                   = {0x06}
+			.Capabilities           = 0x06,
 		},
 		
 	.CDC1_Functional_Union = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)), .Type = 0x24},
-			.SubType                = 0x06,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalUnion_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_Union,
 			
-			.Data                   = {0x00, 0x01}
+			.MasterInterfaceNumber  = 0,
+			.SlaveInterfaceNumber   = 1,
 		},
 
 	.CDC1_ManagementEndpoint = 
@@ -228,28 +229,29 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 			.InterfaceStrIndex      = NO_DESCRIPTOR
 		},
 
-	.CDC2_Functional_IntHeader = 
+	.CDC2_Functional_Header = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)), .Type = 0x24},
-			.SubType                = 0x00,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalHeader_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_Header,
 			
-			.Data                   = {0x01, 0x10}
+			.CDCSpecification       = VERSION_BCD(01.10),
 		},
 
-	.CDC2_Functional_AbstractControlManagement = 
+	.CDC2_Functional_ACM = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(1)), .Type = 0x24},
-			.SubType                = 0x02,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalACM_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_ACM,
 			
-			.Data                   = {0x06}
+			.Capabilities           = 0x06,
 		},
 		
 	.CDC2_Functional_Union = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)), .Type = 0x24},
-			.SubType                = 0x06,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalUnion_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_Union,
 			
-			.Data                   = {0x02, 0x03}
+			.MasterInterfaceNumber  = 2,
+			.SlaveInterfaceNumber   = 3,
 		},
 
 	.CDC2_ManagementEndpoint = 
diff --git a/Demos/Device/ClassDriver/DualVirtualSerial/Descriptors.h b/Demos/Device/ClassDriver/DualVirtualSerial/Descriptors.h
index fd6735ec0..5c1bf53bb 100644
--- a/Demos/Device/ClassDriver/DualVirtualSerial/Descriptors.h
+++ b/Demos/Device/ClassDriver/DualVirtualSerial/Descriptors.h
@@ -77,18 +77,18 @@
 			USB_Descriptor_Configuration_Header_t    Config;
 			USB_Descriptor_Interface_Association_t   CDC1_IAD;
 			USB_Descriptor_Interface_t               CDC1_CCI_Interface;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC1_Functional_IntHeader;
-			CDC_FUNCTIONAL_DESCRIPTOR(1)             CDC1_Functional_AbstractControlManagement;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC1_Functional_Union;
+			USB_CDC_Descriptor_FunctionalHeader_t    CDC1_Functional_Header;
+			USB_CDC_Descriptor_FunctionalACM_t       CDC1_Functional_ACM;
+			USB_CDC_Descriptor_FunctionalUnion_t     CDC1_Functional_Union;
 			USB_Descriptor_Endpoint_t                CDC1_ManagementEndpoint;
 			USB_Descriptor_Interface_t               CDC1_DCI_Interface;
 			USB_Descriptor_Endpoint_t                CDC1_DataOutEndpoint;
 			USB_Descriptor_Endpoint_t                CDC1_DataInEndpoint;
 			USB_Descriptor_Interface_Association_t   CDC2_IAD;
 			USB_Descriptor_Interface_t               CDC2_CCI_Interface;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC2_Functional_IntHeader;
-			CDC_FUNCTIONAL_DESCRIPTOR(1)             CDC2_Functional_AbstractControlManagement;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC2_Functional_Union;
+			USB_CDC_Descriptor_FunctionalHeader_t    CDC2_Functional_Header;
+			USB_CDC_Descriptor_FunctionalACM_t       CDC2_Functional_ACM;
+			USB_CDC_Descriptor_FunctionalUnion_t     CDC2_Functional_Union;
 			USB_Descriptor_Endpoint_t                CDC2_ManagementEndpoint;
 			USB_Descriptor_Interface_t               CDC2_DCI_Interface;
 			USB_Descriptor_Endpoint_t                CDC2_DataOutEndpoint;
diff --git a/Demos/Device/ClassDriver/GenericHID/Descriptors.c b/Demos/Device/ClassDriver/GenericHID/Descriptors.c
index 26d672c45..1964d533c 100644
--- a/Demos/Device/ClassDriver/GenericHID/Descriptors.c
+++ b/Demos/Device/ClassDriver/GenericHID/Descriptors.c
@@ -123,19 +123,19 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 				
 			.Class                  = 0x03,
 			.SubClass               = 0x00,
-			.Protocol               = HID_NON_BOOT_PROTOCOL,
+			.Protocol               = HID_BOOTP_NonBootProtocol,
 				
 			.InterfaceStrIndex      = NO_DESCRIPTOR
 		},
 
 	.HID_GenericHID = 
 		{
-			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = DTYPE_HID},
+			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},
 									 
 			.HIDSpec                = VERSION_BCD(01.11),
 			.CountryCode            = 0x00,
 			.TotalReportDescriptors = 1,
-			.HIDReportType          = DTYPE_Report,
+			.HIDReportType          = HID_DTYPE_Report,
 			.HIDReportLength        = sizeof(GenericReport)
 		},
 
@@ -227,11 +227,11 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 			}
 			
 			break;
-		case DTYPE_HID: 
+		case HID_DTYPE_HID: 
 			Address = &ConfigurationDescriptor.HID_GenericHID;
 			Size    = sizeof(USB_HID_Descriptor_HID_t);
 			break;
-		case DTYPE_Report: 
+		case HID_DTYPE_Report: 
 			Address = &GenericReport;
 			Size    = sizeof(GenericReport);
 			break;
diff --git a/Demos/Device/ClassDriver/GenericHID/GenericHID.c b/Demos/Device/ClassDriver/GenericHID/GenericHID.c
index 4fe58a8a2..d64c1648e 100644
--- a/Demos/Device/ClassDriver/GenericHID/GenericHID.c
+++ b/Demos/Device/ClassDriver/GenericHID/GenericHID.c
@@ -138,7 +138,7 @@ void EVENT_USB_Device_StartOfFrame(void)
  *
  *  \param[in]     HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in,out] ReportID    Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
- *  \param[in]     ReportType  Type of the report to create, either REPORT_ITEM_TYPE_In or REPORT_ITEM_TYPE_Feature
+ *  \param[in]     ReportType  Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
  *  \param[out]    ReportData  Pointer to a buffer where the created report should be stored
  *  \param[out]    ReportSize  Number of bytes written in the report (or zero if no report is to be sent
  *
@@ -163,7 +163,7 @@ bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDIn
  *
  *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in] ReportID    Report ID of the received report from the host
- *  \param[in] ReportType  The type of report that the host has sent, either REPORT_ITEM_TYPE_Out or REPORT_ITEM_TYPE_Feature
+ *  \param[in] ReportType  The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
  *  \param[in] ReportData  Pointer to a buffer where the created report has been stored
  *  \param[in] ReportSize  Size in bytes of the received HID report
  */
diff --git a/Demos/Device/ClassDriver/Joystick/Descriptors.c b/Demos/Device/ClassDriver/Joystick/Descriptors.c
index 217016fd3..8696e207e 100644
--- a/Demos/Device/ClassDriver/Joystick/Descriptors.c
+++ b/Demos/Device/ClassDriver/Joystick/Descriptors.c
@@ -133,19 +133,19 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 				
 			.Class                  = 0x03,
 			.SubClass               = 0x00,
-			.Protocol               = HID_NON_BOOT_PROTOCOL,
+			.Protocol               = HID_BOOTP_NonBootProtocol,
 				
 			.InterfaceStrIndex      = NO_DESCRIPTOR
 		},
 
 	.HID_JoystickHID = 
 		{
-			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = DTYPE_HID},
+			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},
 			
 			.HIDSpec                = VERSION_BCD(01.11),
 			.CountryCode            = 0x00,
 			.TotalReportDescriptors = 1,
-			.HIDReportType          = DTYPE_Report,
+			.HIDReportType          = HID_DTYPE_Report,
 			.HIDReportLength        = sizeof(JoystickReport)
 		},
 
@@ -237,11 +237,11 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 			}
 			
 			break;
-		case DTYPE_HID: 
+		case HID_DTYPE_HID: 
 			Address = &ConfigurationDescriptor.HID_JoystickHID;
 			Size    = sizeof(USB_HID_Descriptor_HID_t);
 			break;
-		case DTYPE_Report: 
+		case HID_DTYPE_Report: 
 			Address = &JoystickReport;
 			Size    = sizeof(JoystickReport);
 			break;
diff --git a/Demos/Device/ClassDriver/Joystick/Joystick.c b/Demos/Device/ClassDriver/Joystick/Joystick.c
index 622106fd4..c759e1346 100644
--- a/Demos/Device/ClassDriver/Joystick/Joystick.c
+++ b/Demos/Device/ClassDriver/Joystick/Joystick.c
@@ -132,7 +132,7 @@ void EVENT_USB_Device_StartOfFrame(void)
  *
  *  \param[in]     HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in,out] ReportID    Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
- *  \param[in]     ReportType  Type of the report to create, either REPORT_ITEM_TYPE_In or REPORT_ITEM_TYPE_Feature
+ *  \param[in]     ReportType  Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
  *  \param[out]    ReportData  Pointer to a buffer where the created report should be stored
  *  \param[out]    ReportSize  Number of bytes written in the report (or zero if no report is to be sent
  *
@@ -173,7 +173,7 @@ bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDIn
  *
  *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in] ReportID    Report ID of the received report from the host
- *  \param[in] ReportType  The type of report that the host has sent, either REPORT_ITEM_TYPE_Out or REPORT_ITEM_TYPE_Feature
+ *  \param[in] ReportType  The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
  *  \param[in] ReportData  Pointer to a buffer where the created report has been stored
  *  \param[in] ReportSize  Size in bytes of the received HID report
  */
diff --git a/Demos/Device/ClassDriver/Keyboard/Descriptors.c b/Demos/Device/ClassDriver/Keyboard/Descriptors.c
index 63114b182..ed2cb6c49 100644
--- a/Demos/Device/ClassDriver/Keyboard/Descriptors.c
+++ b/Demos/Device/ClassDriver/Keyboard/Descriptors.c
@@ -139,19 +139,19 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 				
 			.Class                  = 0x03,
 			.SubClass               = 0x01,
-			.Protocol               = HID_BOOT_KEYBOARD_PROTOCOL,
+			.Protocol               = HID_BOOTP_KeyboardBootProtocol,
 				
 			.InterfaceStrIndex      = NO_DESCRIPTOR
 		},
 
 	.HID_KeyboardHID = 
 		{  
-			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = DTYPE_HID},
+			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},
 			
 			.HIDSpec                = VERSION_BCD(01.11),
 			.CountryCode            = 0x00,
 			.TotalReportDescriptors = 1,
-			.HIDReportType          = DTYPE_Report,
+			.HIDReportType          = HID_DTYPE_Report,
 			.HIDReportLength        = sizeof(KeyboardReport)
 		},
 		
@@ -243,11 +243,11 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 			}
 			
 			break;
-		case DTYPE_HID: 
+		case HID_DTYPE_HID: 
 			Address = &ConfigurationDescriptor.HID_KeyboardHID;
 			Size    = sizeof(USB_HID_Descriptor_HID_t);
 			break;
-		case DTYPE_Report: 
+		case HID_DTYPE_Report: 
 			Address = &KeyboardReport;
 			Size    = sizeof(KeyboardReport);
 			break;
diff --git a/Demos/Device/ClassDriver/Keyboard/Keyboard.c b/Demos/Device/ClassDriver/Keyboard/Keyboard.c
index 8d8503031..755c25a72 100644
--- a/Demos/Device/ClassDriver/Keyboard/Keyboard.c
+++ b/Demos/Device/ClassDriver/Keyboard/Keyboard.c
@@ -132,7 +132,7 @@ void EVENT_USB_Device_StartOfFrame(void)
  *
  *  \param[in]     HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in,out] ReportID    Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
- *  \param[in]     ReportType  Type of the report to create, either REPORT_ITEM_TYPE_In or REPORT_ITEM_TYPE_Feature
+ *  \param[in]     ReportType  Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
  *  \param[out]    ReportData  Pointer to a buffer where the created report should be stored
  *  \param[out]    ReportSize  Number of bytes written in the report (or zero if no report is to be sent
  *
@@ -175,7 +175,7 @@ bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDIn
  *
  *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in] ReportID    Report ID of the received report from the host
- *  \param[in] ReportType  The type of report that the host has sent, either REPORT_ITEM_TYPE_Out or REPORT_ITEM_TYPE_Feature
+ *  \param[in] ReportType  The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
  *  \param[in] ReportData  Pointer to a buffer where the created report has been stored
  *  \param[in] ReportSize  Size in bytes of the received HID report
  */
diff --git a/Demos/Device/ClassDriver/KeyboardMouse/Descriptors.c b/Demos/Device/ClassDriver/KeyboardMouse/Descriptors.c
index 4f7c55b09..bba7ca20d 100644
--- a/Demos/Device/ClassDriver/KeyboardMouse/Descriptors.c
+++ b/Demos/Device/ClassDriver/KeyboardMouse/Descriptors.c
@@ -172,19 +172,19 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 				
 			.Class                  = 0x03,
 			.SubClass               = 0x01,
-			.Protocol               = HID_BOOT_KEYBOARD_PROTOCOL,
+			.Protocol               = HID_BOOTP_KeyboardBootProtocol,
 				
 			.InterfaceStrIndex      = NO_DESCRIPTOR
 		},
 
 	.HID1_KeyboardHID = 
 		{  
-			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = DTYPE_HID},
+			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},
 			
 			.HIDSpec                = VERSION_BCD(01.11),
 			.CountryCode            = 0x00,
 			.TotalReportDescriptors = 1,
-			.HIDReportType          = DTYPE_Report,
+			.HIDReportType          = HID_DTYPE_Report,
 			.HIDReportLength        = sizeof(KeyboardReport)
 		},
 		
@@ -209,19 +209,19 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 				
 			.Class                  = 0x03,
 			.SubClass               = 0x01,
-			.Protocol               = HID_BOOT_MOUSE_PROTOCOL,
+			.Protocol               = HID_BOOTP_MouseBootProtocol,
 				
 			.InterfaceStrIndex      = NO_DESCRIPTOR
 		},
 
 	.HID2_MouseHID = 
 		{  
-			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = DTYPE_HID},
+			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},
 			
 			.HIDSpec                = VERSION_BCD(01.11),
 			.CountryCode            = 0x00,
 			.TotalReportDescriptors = 1,
-			.HIDReportType          = DTYPE_Report,
+			.HIDReportType          = HID_DTYPE_Report,
 			.HIDReportLength        = sizeof(MouseReport)
 		},
 		
@@ -313,7 +313,7 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 			}
 			
 			break;
-		case DTYPE_HID: 
+		case HID_DTYPE_HID: 
 			if (!(wIndex))
 			{
 				Address = &ConfigurationDescriptor.HID1_KeyboardHID;
@@ -325,7 +325,7 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 				Size    = sizeof(USB_HID_Descriptor_HID_t);			
 			}
 			break;
-		case DTYPE_Report: 
+		case HID_DTYPE_Report: 
 			if (!(wIndex))
 			{
 				Address = &KeyboardReport;
diff --git a/Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.c b/Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.c
index 6ba7ce3d0..96c430a22 100644
--- a/Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.c
+++ b/Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.c
@@ -158,7 +158,7 @@ void EVENT_USB_Device_StartOfFrame(void)
  *
  *  \param[in]     HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in,out] ReportID  Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
- *  \param[in]     ReportType  Type of the report to create, either REPORT_ITEM_TYPE_In or REPORT_ITEM_TYPE_Feature
+ *  \param[in]     ReportType  Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
  *  \param[out]    ReportData  Pointer to a buffer where the created report should be stored
  *  \param[out]    ReportSize  Number of bytes written in the report (or zero if no report is to be sent
  *
@@ -230,7 +230,7 @@ bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDIn
  *
  *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in] ReportID    Report ID of the received report from the host
- *  \param[in] ReportType  The type of report that the host has sent, either REPORT_ITEM_TYPE_Out or REPORT_ITEM_TYPE_Feature
+ *  \param[in] ReportType  The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
  *  \param[in] ReportData  Pointer to a buffer where the created report has been stored
  *  \param[in] ReportSize  Size in bytes of the received HID report
  */
diff --git a/Demos/Device/ClassDriver/MIDI/Descriptors.c b/Demos/Device/ClassDriver/MIDI/Descriptors.c
index 34595419d..b842bd27e 100644
--- a/Demos/Device/ClassDriver/MIDI/Descriptors.c
+++ b/Demos/Device/ClassDriver/MIDI/Descriptors.c
@@ -104,14 +104,14 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 	
 	.Audio_ControlInterface_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Interface_AC_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_Header,
+			.Header                   = {.Size = sizeof(USB_Audio_Descriptor_Interface_AC_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_Header,
 			
 			.ACSpecification          = VERSION_BCD(01.00),
 			.TotalLength              = sizeof(USB_Audio_Descriptor_Interface_AC_t),
 			
 			.InCollection             = 1,
-			.InterfaceNumbers         = {1},
+			.InterfaceNumber          = 1,
 		},
 
 	.Audio_StreamInterface = 
@@ -132,8 +132,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.Audio_StreamInterface_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_AudioInterface_AS_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_General,
+			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_AudioInterface_AS_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_General,
 
 			.AudioSpecification       = VERSION_BCD(01.00),
 			
@@ -143,10 +143,10 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.MIDI_In_Jack_Emb = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_InputJack_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_InputJack,
+			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_InputJack_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_InputTerminal,
 			
-			.JackType                 = MIDI_JACKTYPE_EMBEDDED,
+			.JackType                 = MIDI_JACKTYPE_Embedded,
 			.JackID                   = 0x01,
 			
 			.JackStrIndex             = NO_DESCRIPTOR
@@ -154,10 +154,10 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.MIDI_In_Jack_Ext = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_InputJack_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_InputJack,
+			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_InputJack_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_InputTerminal,
 			
-			.JackType                 = MIDI_JACKTYPE_EXTERNAL,
+			.JackType                 = MIDI_JACKTYPE_External,
 			.JackID                   = 0x02,
 			
 			.JackStrIndex             = NO_DESCRIPTOR
@@ -165,10 +165,10 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.MIDI_Out_Jack_Emb = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_OutputJack_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_OutputJack,
+			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_OutputJack_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_OutputTerminal,
 			
-			.JackType                 = MIDI_JACKTYPE_EMBEDDED,
+			.JackType                 = MIDI_JACKTYPE_Embedded,
 			.JackID                   = 0x03,
 
 			.NumberOfPins             = 1,
@@ -180,10 +180,10 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.MIDI_Out_Jack_Ext = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_OutputJack_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_OutputJack,
+			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_OutputJack_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = AUDIO_DSUBTYPE_CSInterface_OutputTerminal,
 			
-			.JackType                 = MIDI_JACKTYPE_EXTERNAL,
+			.JackType                 = MIDI_JACKTYPE_External,
 			.JackID                   = 0x04,
 
 			.NumberOfPins             = 1,
@@ -211,8 +211,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.MIDI_In_Jack_Endpoint_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_Jack_Endpoint_t), .Type = DTYPE_AudioEndpoint},
-			.Subtype                  = DSUBTYPE_General,
+			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_Jack_Endpoint_t), .Type = DTYPE_CSEndpoint},
+			.Subtype                  = AUDIO_DSUBTYPE_CSEndpoint_General,
 
 			.TotalEmbeddedJacks       = 0x01,
 			.AssociatedJackID         = {0x01}
@@ -236,8 +236,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.MIDI_Out_Jack_Endpoint_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_Jack_Endpoint_t), .Type = DTYPE_AudioEndpoint},
-			.Subtype                  = DSUBTYPE_General,
+			.Header                   = {.Size = sizeof(USB_MIDI_Descriptor_Jack_Endpoint_t), .Type = DTYPE_CSEndpoint},
+			.Subtype                  = AUDIO_DSUBTYPE_CSEndpoint_General,
 
 			.TotalEmbeddedJacks       = 0x01,
 			.AssociatedJackID         = {0x03}
diff --git a/Demos/Device/ClassDriver/MassStorageKeyboard/Descriptors.c b/Demos/Device/ClassDriver/MassStorageKeyboard/Descriptors.c
index c14e4c7c9..12422ad13 100644
--- a/Demos/Device/ClassDriver/MassStorageKeyboard/Descriptors.c
+++ b/Demos/Device/ClassDriver/MassStorageKeyboard/Descriptors.c
@@ -188,19 +188,19 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 				
 			.Class                  = 0x03,
 			.SubClass               = 0x01,
-			.Protocol               = 0x01,
+			.Protocol               = HID_BOOTP_KeyboardBootProtocol,
 				
 			.InterfaceStrIndex      = NO_DESCRIPTOR
 		},
 
 	.HID_KeyboardHID = 
 		{  
-			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = DTYPE_HID},
+			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},
 			
 			.HIDSpec                = VERSION_BCD(01.11),
 			.CountryCode            = 0x00,
 			.TotalReportDescriptors = 1,
-			.HIDReportType          = DTYPE_Report,
+			.HIDReportType          = HID_DTYPE_Report,
 			.HIDReportLength        = sizeof(KeyboardReport)
 		},
 		
@@ -292,11 +292,11 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 			}
 			
 			break;
-		case DTYPE_HID:
+		case HID_DTYPE_HID:
 			Address = &ConfigurationDescriptor.HID_KeyboardHID;
 			Size    = sizeof(USB_HID_Descriptor_HID_t);
 			break;
-		case DTYPE_Report:
+		case HID_DTYPE_Report:
 			Address = &KeyboardReport;
 			Size    = sizeof(KeyboardReport);
 			break;
diff --git a/Demos/Device/ClassDriver/MassStorageKeyboard/MassStorageKeyboard.c b/Demos/Device/ClassDriver/MassStorageKeyboard/MassStorageKeyboard.c
index ba6213076..e5dbfb675 100644
--- a/Demos/Device/ClassDriver/MassStorageKeyboard/MassStorageKeyboard.c
+++ b/Demos/Device/ClassDriver/MassStorageKeyboard/MassStorageKeyboard.c
@@ -178,7 +178,7 @@ void EVENT_USB_Device_StartOfFrame(void)
  *
  *  \param[in]     HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in,out] ReportID    Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
- *  \param[in]     ReportType  Type of the report to create, either REPORT_ITEM_TYPE_In or REPORT_ITEM_TYPE_Feature
+ *  \param[in]     ReportType  Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
  *  \param[out]    ReportData  Pointer to a buffer where the created report should be stored
  *  \param[out]    ReportSize  Number of bytes written in the report (or zero if no report is to be sent
  *
@@ -221,7 +221,7 @@ bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDIn
  *
  *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in] ReportID    Report ID of the received report from the host
- *  \param[in] ReportType  The type of report that the host has sent, either REPORT_ITEM_TYPE_Out or REPORT_ITEM_TYPE_Feature
+ *  \param[in] ReportType  The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
  *  \param[in] ReportData  Pointer to a buffer where the created report has been stored
  *  \param[in] ReportSize  Size in bytes of the received HID report
  */
diff --git a/Demos/Device/ClassDriver/Mouse/Descriptors.c b/Demos/Device/ClassDriver/Mouse/Descriptors.c
index 830255570..6a699b03d 100644
--- a/Demos/Device/ClassDriver/Mouse/Descriptors.c
+++ b/Demos/Device/ClassDriver/Mouse/Descriptors.c
@@ -133,19 +133,19 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 				
 			.Class                  = 0x03,
 			.SubClass               = 0x01,
-			.Protocol               = HID_BOOT_MOUSE_PROTOCOL,
+			.Protocol               = HID_BOOTP_MouseBootProtocol,
 				
 			.InterfaceStrIndex      = NO_DESCRIPTOR
 		},
 
 	.HID_MouseHID = 
 		{
-			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = DTYPE_HID},
+			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},
 
 			.HIDSpec                = VERSION_BCD(01.11),
 			.CountryCode            = 0x00,
 			.TotalReportDescriptors = 1,
-			.HIDReportType          = DTYPE_Report,
+			.HIDReportType          = HID_DTYPE_Report,
 			.HIDReportLength        = sizeof(MouseReport)
 		},
 
@@ -237,11 +237,11 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 			}
 			
 			break;
-		case DTYPE_HID: 
+		case HID_DTYPE_HID: 
 			Address = &ConfigurationDescriptor.HID_MouseHID;
 			Size    = sizeof(USB_HID_Descriptor_HID_t);
 			break;
-		case DTYPE_Report: 
+		case HID_DTYPE_Report: 
 			Address = &MouseReport;
 			Size    = sizeof(MouseReport);
 			break;
diff --git a/Demos/Device/ClassDriver/Mouse/Mouse.c b/Demos/Device/ClassDriver/Mouse/Mouse.c
index 6efdb9973..aabd96138 100644
--- a/Demos/Device/ClassDriver/Mouse/Mouse.c
+++ b/Demos/Device/ClassDriver/Mouse/Mouse.c
@@ -132,7 +132,7 @@ void EVENT_USB_Device_StartOfFrame(void)
  *
  *  \param[in]     HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in,out] ReportID    Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
- *  \param[in]     ReportType  Type of the report to create, either REPORT_ITEM_TYPE_In or REPORT_ITEM_TYPE_Feature
+ *  \param[in]     ReportType  Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
  *  \param[out]    ReportData  Pointer to a buffer where the created report should be stored
  *  \param[out]    ReportSize  Number of bytes written in the report (or zero if no report is to be sent
  *
@@ -173,7 +173,7 @@ bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDIn
  *
  *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in] ReportID    Report ID of the received report from the host
- *  \param[in] ReportType  The type of report that the host has sent, either REPORT_ITEM_TYPE_Out or REPORT_ITEM_TYPE_Feature
+ *  \param[in] ReportType  The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
  *  \param[in] ReportData  Pointer to a buffer where the created report has been stored
  *  \param[in] ReportSize  Size in bytes of the received HID report
  */
diff --git a/Demos/Device/ClassDriver/RNDISEthernet/Descriptors.c b/Demos/Device/ClassDriver/RNDISEthernet/Descriptors.c
index 174880962..d259390c3 100644
--- a/Demos/Device/ClassDriver/RNDISEthernet/Descriptors.c
+++ b/Demos/Device/ClassDriver/RNDISEthernet/Descriptors.c
@@ -104,26 +104,27 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.CDC_Functional_Header = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)), .Type = 0x24},
-			.SubType                = 0x00,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalHeader_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_Header,
 			
-			.Data                   = {0x01, 0x10}
+			.CDCSpecification       = VERSION_BCD(01.10),
 		},
-		
-	.CDC_Functional_AbstractControlManagement = 
+
+	.CDC_Functional_ACM = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(1)), .Type = 0x24},
-			.SubType                = 0x02,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalACM_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_ACM,
 			
-			.Data                   = {0x00}
+			.Capabilities           = 0x00,
 		},
-	
+		
 	.CDC_Functional_Union = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)), .Type = 0x24},
-			.SubType                = 0x06,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalUnion_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_Union,
 			
-			.Data                   = {0x00, 0x01}
+			.MasterInterfaceNumber  = 0,
+			.SlaveInterfaceNumber   = 1,
 		},
 
 	.CDC_NotificationEndpoint = 
diff --git a/Demos/Device/ClassDriver/RNDISEthernet/Descriptors.h b/Demos/Device/ClassDriver/RNDISEthernet/Descriptors.h
index ed4d274b2..26bd57127 100644
--- a/Demos/Device/ClassDriver/RNDISEthernet/Descriptors.h
+++ b/Demos/Device/ClassDriver/RNDISEthernet/Descriptors.h
@@ -67,9 +67,9 @@
 		{
 			USB_Descriptor_Configuration_Header_t    Config;
 			USB_Descriptor_Interface_t               CDC_CCI_Interface;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC_Functional_Header;
-			CDC_FUNCTIONAL_DESCRIPTOR(1)             CDC_Functional_AbstractControlManagement;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC_Functional_Union;
+			USB_CDC_Descriptor_FunctionalHeader_t    CDC_Functional_Header;
+			USB_CDC_Descriptor_FunctionalACM_t       CDC_Functional_ACM;
+			USB_CDC_Descriptor_FunctionalUnion_t     CDC_Functional_Union;
 			USB_Descriptor_Endpoint_t                CDC_NotificationEndpoint;
 			USB_Descriptor_Interface_t               CDC_DCI_Interface;
 			USB_Descriptor_Endpoint_t                RNDIS_DataOutEndpoint;
diff --git a/Demos/Device/ClassDriver/VirtualSerial/Descriptors.c b/Demos/Device/ClassDriver/VirtualSerial/Descriptors.c
index 3deaf6d4b..2e47069fd 100644
--- a/Demos/Device/ClassDriver/VirtualSerial/Descriptors.c
+++ b/Demos/Device/ClassDriver/VirtualSerial/Descriptors.c
@@ -114,28 +114,29 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 			.InterfaceStrIndex      = NO_DESCRIPTOR
 		},
 
-	.CDC_Functional_IntHeader = 
+	.CDC_Functional_Header = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)), .Type = 0x24},
-			.SubType                = 0x00,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalHeader_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_Header,
 			
-			.Data                   = {0x01, 0x10}
+			.CDCSpecification       = VERSION_BCD(01.10),
 		},
 
-	.CDC_Functional_AbstractControlManagement = 
+	.CDC_Functional_ACM = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(1)), .Type = 0x24},
-			.SubType                = 0x02,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalACM_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_ACM,
 			
-			.Data                   = {0x06}
+			.Capabilities           = 0x06,
 		},
 		
 	.CDC_Functional_Union = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)), .Type = 0x24},
-			.SubType                = 0x06,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalUnion_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_Union,
 			
-			.Data                   = {0x00, 0x01}
+			.MasterInterfaceNumber  = 0,
+			.SlaveInterfaceNumber   = 1,
 		},
 
 	.CDC_NotificationEndpoint = 
diff --git a/Demos/Device/ClassDriver/VirtualSerial/Descriptors.h b/Demos/Device/ClassDriver/VirtualSerial/Descriptors.h
index 1c1f4694d..159d8d265 100644
--- a/Demos/Device/ClassDriver/VirtualSerial/Descriptors.h
+++ b/Demos/Device/ClassDriver/VirtualSerial/Descriptors.h
@@ -67,9 +67,9 @@
 		{
 			USB_Descriptor_Configuration_Header_t    Config;
 			USB_Descriptor_Interface_t               CDC_CCI_Interface;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC_Functional_IntHeader;
-			CDC_FUNCTIONAL_DESCRIPTOR(1)             CDC_Functional_AbstractControlManagement;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC_Functional_Union;
+			USB_CDC_Descriptor_FunctionalHeader_t    CDC_Functional_Header;
+			USB_CDC_Descriptor_FunctionalACM_t       CDC_Functional_ACM;
+			USB_CDC_Descriptor_FunctionalUnion_t     CDC_Functional_Union;
 			USB_Descriptor_Endpoint_t                CDC_NotificationEndpoint;
 			USB_Descriptor_Interface_t               CDC_DCI_Interface;
 			USB_Descriptor_Endpoint_t                CDC_DataOutEndpoint;
diff --git a/Demos/Device/ClassDriver/VirtualSerialMouse/Descriptors.c b/Demos/Device/ClassDriver/VirtualSerialMouse/Descriptors.c
index 7d383a4cc..72e89ef27 100644
--- a/Demos/Device/ClassDriver/VirtualSerialMouse/Descriptors.c
+++ b/Demos/Device/ClassDriver/VirtualSerialMouse/Descriptors.c
@@ -164,28 +164,29 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 			.InterfaceStrIndex      = NO_DESCRIPTOR
 		},
 
-	.CDC_Functional_IntHeader = 
+	.CDC_Functional_Header = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)), .Type = 0x24},
-			.SubType                = 0x00,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalHeader_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_Header,
 			
-			.Data                   = {0x01, 0x10}
+			.CDCSpecification       = VERSION_BCD(01.10),
 		},
 
-	.CDC_Functional_AbstractControlManagement = 
+	.CDC_Functional_ACM = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(1)), .Type = 0x24},
-			.SubType                = 0x02,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalACM_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_ACM,
 			
-			.Data                   = {0x06}
+			.Capabilities           = 0x06,
 		},
 		
 	.CDC_Functional_Union = 
 		{
-			.Header                 = {.Size = sizeof(CDC_FUNCTIONAL_DESCRIPTOR(2)), .Type = 0x24},
-			.SubType                = 0x06,
+			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalUnion_t), .Type = DTYPE_CSInterface},
+			.Subtype                = CDC_DSUBTYPE_CSInterface_Union,
 			
-			.Data                   = {0x00, 0x01}
+			.MasterInterfaceNumber  = 0,
+			.SlaveInterfaceNumber   = 1,
 		},
 
 	.CDC_NotificationEndpoint = 
@@ -245,19 +246,19 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 				
 			.Class                  = 0x03,
 			.SubClass               = 0x01,
-			.Protocol               = HID_BOOT_MOUSE_PROTOCOL,
+			.Protocol               = HID_BOOTP_MouseBootProtocol,
 				
 			.InterfaceStrIndex      = NO_DESCRIPTOR
 		},
 
 	.HID_MouseHID = 
 		{
-			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = DTYPE_HID},
+			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},
 
 			.HIDSpec                = VERSION_BCD(01.11),
 			.CountryCode            = 0x00,
 			.TotalReportDescriptors = 1,
-			.HIDReportType          = DTYPE_Report,
+			.HIDReportType          = HID_DTYPE_Report,
 			.HIDReportLength        = sizeof(MouseReport)
 		},
 
@@ -349,11 +350,11 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 			}
 			
 			break;
-		case DTYPE_HID: 
+		case HID_DTYPE_HID: 
 			Address = &ConfigurationDescriptor.HID_MouseHID;
 			Size    = sizeof(USB_HID_Descriptor_HID_t);
 			break;
-		case DTYPE_Report: 
+		case HID_DTYPE_Report: 
 			Address = &MouseReport;
 			Size    = sizeof(MouseReport);
 			break;
diff --git a/Demos/Device/ClassDriver/VirtualSerialMouse/Descriptors.h b/Demos/Device/ClassDriver/VirtualSerialMouse/Descriptors.h
index dfe6c1147..6b6178a93 100644
--- a/Demos/Device/ClassDriver/VirtualSerialMouse/Descriptors.h
+++ b/Demos/Device/ClassDriver/VirtualSerialMouse/Descriptors.h
@@ -75,9 +75,9 @@
 			USB_Descriptor_Configuration_Header_t    Config;
 			USB_Descriptor_Interface_Association_t   CDC_IAD;
 			USB_Descriptor_Interface_t               CDC_CCI_Interface;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC_Functional_IntHeader;
-			CDC_FUNCTIONAL_DESCRIPTOR(1)             CDC_Functional_AbstractControlManagement;
-			CDC_FUNCTIONAL_DESCRIPTOR(2)             CDC_Functional_Union;
+			USB_CDC_Descriptor_FunctionalHeader_t    CDC_Functional_Header;
+			USB_CDC_Descriptor_FunctionalACM_t       CDC_Functional_ACM;
+			USB_CDC_Descriptor_FunctionalUnion_t     CDC_Functional_Union;
 			USB_Descriptor_Endpoint_t                CDC_NotificationEndpoint;
 			USB_Descriptor_Interface_t               CDC_DCI_Interface;
 			USB_Descriptor_Endpoint_t                CDC_DataOutEndpoint;
diff --git a/Demos/Device/ClassDriver/VirtualSerialMouse/VirtualSerialMouse.c b/Demos/Device/ClassDriver/VirtualSerialMouse/VirtualSerialMouse.c
index 86cdb4e7a..8372d4e1b 100644
--- a/Demos/Device/ClassDriver/VirtualSerialMouse/VirtualSerialMouse.c
+++ b/Demos/Device/ClassDriver/VirtualSerialMouse/VirtualSerialMouse.c
@@ -191,7 +191,7 @@ void EVENT_USB_Device_StartOfFrame(void)
  *
  *  \param[in]     HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in,out] ReportID    Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
- *  \param[in]     ReportType  Type of the report to create, either REPORT_ITEM_TYPE_In or REPORT_ITEM_TYPE_Feature
+ *  \param[in]     ReportType  Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
  *  \param[out]    ReportData  Pointer to a buffer where the created report should be stored
  *  \param[out]    ReportSize  Number of bytes written in the report (or zero if no report is to be sent
  *
@@ -232,7 +232,7 @@ bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDIn
  *
  *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in] ReportID    Report ID of the received report from the host
- *  \param[in] ReportType  The type of report that the host has sent, either REPORT_ITEM_TYPE_Out or REPORT_ITEM_TYPE_Feature
+ *  \param[in] ReportType  The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
  *  \param[in] ReportData  Pointer to a buffer where the created report has been stored
  *  \param[in] ReportSize  Size in bytes of the received HID report
  */
diff --git a/Demos/Device/LowLevel/AudioInput/Descriptors.c b/Demos/Device/LowLevel/AudioInput/Descriptors.c
index 46b43acab..307439611 100644
--- a/Demos/Device/LowLevel/AudioInput/Descriptors.c
+++ b/Demos/Device/LowLevel/AudioInput/Descriptors.c
@@ -104,8 +104,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 	
 	.Audio_ControlInterface_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Interface_AC_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_Header,
+			.Header                   = {.Size = sizeof(USB_Audio_Interface_AC_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = DSUBTYPE_AudioHeader,
 			
 			.ACSpecification          = VERSION_BCD(01.00),
 			.TotalLength              = (sizeof(USB_Audio_Interface_AC_t) +
@@ -118,7 +118,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.Audio_InputTerminal = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_InputTerminal_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_Audio_InputTerminal_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_InputTerminal,
 		
 			.TerminalID               = 0x01,
@@ -134,7 +134,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.Audio_OutputTerminal = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_OutputTerminal_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_Audio_OutputTerminal_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_OutputTerminal,
 		
 			.TerminalID               = 0x02,
@@ -180,7 +180,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.Audio_StreamInterface_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Interface_AS_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_Audio_Interface_AS_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_General,
 			
 			.TerminalLink             = 0x02,
@@ -191,7 +191,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.Audio_AudioFormat = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Format_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_Audio_Format_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_Format,
 
 			.FormatType               = 0x01,
@@ -223,7 +223,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.Audio_StreamEndpoint_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_StreamEndpoint_Spc_t), .Type = DTYPE_AudioEndpoint},
+			.Header                   = {.Size = sizeof(USB_Audio_StreamEndpoint_Spc_t), .Type = DTYPE_CSEndpoint},
 			.Subtype                  = DSUBTYPE_General,
 			
 			.Attributes               = 0x00,
diff --git a/Demos/Device/LowLevel/AudioInput/Descriptors.h b/Demos/Device/LowLevel/AudioInput/Descriptors.h
index 1b700a6d3..d154f01a4 100644
--- a/Demos/Device/LowLevel/AudioInput/Descriptors.h
+++ b/Demos/Device/LowLevel/AudioInput/Descriptors.h
@@ -42,14 +42,8 @@
 		#include <avr/pgmspace.h>
 
 	/* Macros: */
-		/** Descriptor header constant to indicate a Audio class interface descriptor. */
-		#define DTYPE_AudioInterface         0x24
-
-		/** Descriptor header constant to indicate a Audio class endpoint descriptor. */
-		#define DTYPE_AudioEndpoint          0x25
-
 		/** Audio class descriptor subtype value for a Audio class specific header descriptor. */
-		#define DSUBTYPE_Header              0x01
+		#define DSUBTYPE_AudioHeader         0x01
 
 		/** Audio class descriptor subtype value for an Output Terminal Audio class specific descriptor. */
 		#define DSUBTYPE_InputTerminal       0x02
diff --git a/Demos/Device/LowLevel/AudioOutput/Descriptors.c b/Demos/Device/LowLevel/AudioOutput/Descriptors.c
index 20ce79eaa..2d749fcd3 100644
--- a/Demos/Device/LowLevel/AudioOutput/Descriptors.c
+++ b/Demos/Device/LowLevel/AudioOutput/Descriptors.c
@@ -104,8 +104,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 	
 	.Audio_ControlInterface_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Interface_AC_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_Header,
+			.Header                   = {.Size = sizeof(USB_Audio_Interface_AC_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = DSUBTYPE_AudioHeader,
 			
 			.ACSpecification          = VERSION_BCD(01.00),
 			.TotalLength              = (sizeof(USB_Audio_Interface_AC_t) +
@@ -118,7 +118,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.Audio_InputTerminal = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_InputTerminal_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_Audio_InputTerminal_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_InputTerminal,
 		
 			.TerminalID               = 0x01,
@@ -134,7 +134,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.Audio_OutputTerminal = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_OutputTerminal_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_Audio_OutputTerminal_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_OutputTerminal,
 		
 			.TerminalID               = 0x02,
@@ -180,7 +180,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.Audio_StreamInterface_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Interface_AS_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_Audio_Interface_AS_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_General,
 			
 			.TerminalLink             = 0x01,
@@ -191,7 +191,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.Audio_AudioFormat = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Format_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_Audio_Format_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_Format,
 
 			.FormatType               = 0x01,
@@ -223,7 +223,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.Audio_StreamEndpoint_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_StreamEndpoint_Spc_t), .Type = DTYPE_AudioEndpoint},
+			.Header                   = {.Size = sizeof(USB_Audio_StreamEndpoint_Spc_t), .Type = DTYPE_CSEndpoint},
 			.Subtype                  = DSUBTYPE_General,
 			
 			.Attributes               = EP_ACCEPTS_SMALL_PACKETS,
diff --git a/Demos/Device/LowLevel/AudioOutput/Descriptors.h b/Demos/Device/LowLevel/AudioOutput/Descriptors.h
index 112b90079..cd6b2b8cf 100644
--- a/Demos/Device/LowLevel/AudioOutput/Descriptors.h
+++ b/Demos/Device/LowLevel/AudioOutput/Descriptors.h
@@ -42,14 +42,8 @@
 		#include <avr/pgmspace.h>
 
 	/* Macros: */
-		/** Descriptor header constant to indicate a Audio class interface descriptor. */
-		#define DTYPE_AudioInterface         0x24
-
-		/** Descriptor header constant to indicate a Audio class endpoint descriptor. */
-		#define DTYPE_AudioEndpoint          0x25
-
 		/** Audio class descriptor subtype value for a Audio class specific header descriptor. */
-		#define DSUBTYPE_Header              0x01
+		#define DSUBTYPE_AudioHeader         0x01
 
 		/** Audio class descriptor subtype value for an Output Terminal Audio class specific descriptor. */
 		#define DSUBTYPE_InputTerminal       0x02
diff --git a/Demos/Device/LowLevel/MIDI/Descriptors.c b/Demos/Device/LowLevel/MIDI/Descriptors.c
index 33fba26b9..af52cba43 100644
--- a/Demos/Device/LowLevel/MIDI/Descriptors.c
+++ b/Demos/Device/LowLevel/MIDI/Descriptors.c
@@ -104,8 +104,8 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 	
 	.Audio_ControlInterface_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Interface_AC_t), .Type = DTYPE_AudioInterface},
-			.Subtype                  = DSUBTYPE_Header,
+			.Header                   = {.Size = sizeof(USB_Audio_Interface_AC_t), .Type = DTYPE_CSInterface},
+			.Subtype                  = DSUBTYPE_AudioHeader,
 			
 			.ACSpecification          = VERSION_BCD(01.00),
 			.TotalLength              = sizeof(USB_Audio_Interface_AC_t),
@@ -132,7 +132,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.Audio_StreamInterface_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_Audio_Interface_MIDI_AS_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_Audio_Interface_MIDI_AS_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_General,
 
 			.AudioSpecification       = VERSION_BCD(01.00),
@@ -143,7 +143,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.MIDI_In_Jack_Emb = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_In_Jack_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_MIDI_In_Jack_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_InputJack,
 			
 			.JackType                 = JACKTYPE_EMBEDDED,
@@ -154,7 +154,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.MIDI_In_Jack_Ext = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_In_Jack_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_MIDI_In_Jack_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_InputJack,
 			
 			.JackType                 = JACKTYPE_EXTERNAL,
@@ -165,7 +165,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.MIDI_Out_Jack_Emb = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_Out_Jack_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_MIDI_Out_Jack_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_OutputJack,
 			
 			.JackType                 = JACKTYPE_EMBEDDED,
@@ -180,7 +180,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
 	.MIDI_Out_Jack_Ext = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_Out_Jack_t), .Type = DTYPE_AudioInterface},
+			.Header                   = {.Size = sizeof(USB_MIDI_Out_Jack_t), .Type = DTYPE_CSInterface},
 			.Subtype                  = DSUBTYPE_OutputJack,
 			
 			.JackType                 = JACKTYPE_EXTERNAL,
@@ -211,7 +211,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.MIDI_In_Jack_Endpoint_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_Jack_Endpoint_t), .Type = DTYPE_AudioEndpoint},
+			.Header                   = {.Size = sizeof(USB_MIDI_Jack_Endpoint_t), .Type = DTYPE_CSEndpoint},
 			.Subtype                  = DSUBTYPE_General,
 
 			.TotalEmbeddedJacks       = 0x01,
@@ -236,7 +236,7 @@ USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		
 	.MIDI_Out_Jack_Endpoint_SPC = 
 		{
-			.Header                   = {.Size = sizeof(USB_MIDI_Jack_Endpoint_t), .Type = DTYPE_AudioEndpoint},
+			.Header                   = {.Size = sizeof(USB_MIDI_Jack_Endpoint_t), .Type = DTYPE_CSEndpoint},
 			.Subtype                  = DSUBTYPE_General,
 
 			.TotalEmbeddedJacks       = 0x01,
diff --git a/Demos/Device/LowLevel/MIDI/Descriptors.h b/Demos/Device/LowLevel/MIDI/Descriptors.h
index ba65a89cd..5aebd8fdb 100644
--- a/Demos/Device/LowLevel/MIDI/Descriptors.h
+++ b/Demos/Device/LowLevel/MIDI/Descriptors.h
@@ -42,14 +42,8 @@
 		#include <avr/pgmspace.h>
 
 	/* Macros: */
-		/** Descriptor header constant to indicate a Audio class interface descriptor. */
-		#define DTYPE_AudioInterface        0x24
-
-		/** Descriptor header constant to indicate a Audio class endpoint descriptor. */
-		#define DTYPE_AudioEndpoint         0x25
-
 		/** Audio class descriptor subtype value for a Audio class specific header descriptor. */
-		#define DSUBTYPE_Header             0x01
+		#define DSUBTYPE_AudioHeader        0x01
 
 		/** Audio class descriptor subtype value for a Audio class specific MIDI input jack descriptor. */
 		#define DSUBTYPE_InputJack          0x02
diff --git a/Demos/Device/LowLevel/MassStorage/MassStorage.h b/Demos/Device/LowLevel/MassStorage/MassStorage.h
index 97b9de04f..5a5c5f800 100644
--- a/Demos/Device/LowLevel/MassStorage/MassStorage.h
+++ b/Demos/Device/LowLevel/MassStorage/MassStorage.h
@@ -89,7 +89,7 @@
 		/** LED mask for the library LED driver, to indicate that the USB interface is busy. */
 		#define LEDMASK_USB_BUSY           LEDS_LED2
 		
-	/* Type defines: */
+	/* Type Defines: */
 		/** Type define for a Command Block Wrapper, used in the Mass Storage Bulk-Only Transport protocol. */
 		typedef struct
 		{