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diff --git a/docs/ultraplus.html b/docs/ultraplus.html index e01d038..694b82d 100644 --- a/docs/ultraplus.html +++ b/docs/ultraplus.html @@ -285,7 +285,8 @@ can be used as an open-drain IO using the standard IO cell.</p> <h2>Hard IP</h2> <p>The UltraPlus devices contain three types of Hard IP: I<sup>2</sup>C (<span style="font-family:monospace">SB_I2C</span>), SPI (<span style="font-family:monospace">SB_SPI</span>), and LED PWM generation -(<span style="font-family:monospace">SB_LEDDA_IP</span>). The connections and configurations for each of these blocks are documented below.</p> +(<span style="font-family:monospace">SB_LEDDA_IP</span>). The connections and configurations for each of these blocks are documented below. Names in italics are parameters rather than actual bits, +where multiple bits are used to enable an IP they are labeled as <span style="font-family:monospace"><em>_ENABLE_0</em></span>, <span style="font-family:monospace"><em>_ENABLE_1</em></span>, etc. </p> <table class="multitab"><tr><td> <table class="cstab"> <tr><th>Signal</th><th>I2C<br/>(0, 31, 0)</th><th>I2C<br/>(25, 31, 0)</th></tr> @@ -410,6 +411,15 @@ can be used as an open-drain IO using the standard IO cell.</p> </td></tr></table> </p> -<p>The I<sup>2</sup>C "glitch filter" is a seperate module from the I<sup>2</sup>C interface IP and needs to be reverse engineered seperately. +<p>The I<sup>2</sup>C "glitch filter" (referred to as <span style="font-family:monospace">SB_FILTER_50NS</span>) is a seperate module from the I<sup>2</sup>C interface IP, with connections as shown below: + <table class="ctab"> + <tr><th>Signal</th><th>SB_FILTER_50NS<br/>(25, 31, 2)</th><th>SB_FILTER_50NS<br/>(25, 31, 3)</th></tr> + <tr><td>FILTERIN</td><td>(25, 27, lutff_1/in_0)</td><td>(25, 27, lutff_0/in_0)</td></tr> + <tr><td>FILTEROUT</td><td>(25, 27, slf_op_2)</td><td>(25, 27, slf_op_1)</td></tr> + <tr><td>ENABLE_0</td><td>(25, 30, CBIT_2)</td><td>(25, 30, CBIT_5)</td></tr> + <tr><td>ENABLE_1</td><td>(25, 30, CBIT_3)</td><td>(25, 30, CBIT_6)</td></tr> + <tr><td>ENABLE_2</td><td>(25, 30, CBIT_4)</td><td>(25, 30, CBIT_7)</td></tr> + + </table> </body></html> |