Incorrect Handling of Corrupted AUX Transactions in DisplayPort Receiver

Description

The DisplayPort IP core receiver incorrectly handles corrupt AUX transactions and noisy AUX connections.

This issue may cause the following:

Some Link Layer CTS tests may fail.

Some devices using the DisplayPort IP core may fail to inter-operate due to the lack of AUX channel communication.

The AUX channel may stop functioning due to noisy AUX connections.

Resolution

To avoid this issue, ensure that the AUX channel is implemented in accordance to the DisplayPort specified logical levels.

This issue is fixed in version 14.1 of the DisplayPort IP core.