The following table describes tx_change_fail_code output port encoding:
| Code | Description |
|---|---|
| 0 | Reserved |
| 1 | When a change of the TX SDI mode is requested that requires changing the TXDATA_WIDTH attribute in the GT transceiver, the UHD-SDI control module attempts to do a DRP write cycle to change that attribute. If the UHD-SDI DRP control module detected a mismatch between the written TXDATA_WIDTH value and its actual content after retries, the sequence fails with this failure code. |
| 2 | When a change of the TX SDI mode is requested that requires changing the TXINTDATA_WIDTH attribute in the GT transceiver, the UHD-SDI control module attempts to do a DRP write cycle to change that attribute. If the UHD-SDI DRP control module detected a mismatch between the written TXINTDATA_WIDTH value and its actual content after retries, the sequence fails with this failure code. |
| 3 | When a change of the TX SDI mode is requested that requires changing the TXOUT_DIV attribute in the GT transceiver, the UHD-SDI control module attempts to do a DRP write cycle to change that attribute. If the UHD-SDI DRP control module detected a mismatch between the written TXOUT_DIV value and its actual content after retries, the sequence fails with this failure code. |
| 4 | The gtwiz_reset_tx_datapath_in port of the GT Wizard IP is asserted after completing a series for DRP and GT port during a dynamic change to reset the GT TX portion. If the gtwiz_reset_tx_done_out port of GT Wizard IP failed to assert after retries, the sequence fails with this failure code. |
| 7-5 | Reserved |