HDMI RX/TX Calibration Causes Reset on the Both Duplex Channels

Description

When using the Arria 10 HDMI reconfiguration module design example, you may encounter RX calibration causing reset on the TX channel or TX calibration causing reset on the RX channel.

This issue may occur if the RX and TX channels are placed on the same physical channel. When placed in the same physical channel, both rx_cal_busy and tx_cal_busy are driven by the same source. Both rx_cal_busy and tx_cal_busy are driven high when either TX or RX calibration is triggered.

Resolution

There is no workaround for this issue.

This issue is fixed in version 16.0 of the HDMI IP core.