diff options
| -rw-r--r-- | interchange/DeviceResources.capnp | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/interchange/DeviceResources.capnp b/interchange/DeviceResources.capnp index 0b22a41..5a52bec 100644 --- a/interchange/DeviceResources.capnp +++ b/interchange/DeviceResources.capnp @@ -339,6 +339,33 @@ struct Device { constant @2 : ConstantType; } + # These structures are used to define default constant values for unused + # or missing cell pins. For each cell type, we have a list of pins and + # what to do with those pins (which will be to tie it to 0 or 1 in most + # cases). + enum CellPinValue { + # leave floating + float @0; + # connect to ground + gnd @1; + # connect to vcc + vcc @2; + } + + struct DefaultCellConnection { + # What is the name of this cell pin? + name @0 : StringIdx $stringRef(); + # The default constant value for the pin if missing or disconnected + value @1 : CellPinValue; + } + + struct DefaultCellConnections { + # The type of the cell we're providing a list of defaults for + cellType @0 : StringIdx $stringRef(); + # The list of default cell pin values + pins @1 : List(DefaultCellConnection); + } + # When either constant signal can be routed to an input site pin, which # constant should be used by default? # @@ -383,6 +410,9 @@ struct Device { anyName @10 : Void; name @11 : StringIdx $stringRef(); } + + # How to treat missing/disconnected cell pins + defaultCellConns @12 : List(DefaultCellConnections); } ###################################### |