Description

Symptoms:

• Aurora channel with Production silicon is stuck with CHANNEL_UP = '0'. It was working fine with GES silicon.
• It seems that the RXBUFFER is always in reset, RXDATAis stuck, and RXRECCLK (RXOUTCLK) is correctly toggling.
• RXBYTEISALIGNED is not asserted as expected, but the datais good.
• The channel was working properly with GES silicon.

Solution

In Production silicon, PCS_RSVD_ATTR[8]=1 enables the electrical idle detect circuit. In GES and previous silicon, the idle detect circuit is always enabled. For all silicon, if RXBUF_RESET_ON_EIDLE = TRUE, an internal automatic RX Buffer Reset is applied when the Electrical Idle condition is detected.

For all protocols not using OOB or Electrical Idle detection, please set the following parameters:

To power down OOB signal detector:

• PCS_RSVD_ATTR[8] = '0'

When OOB is powered down, downstream circuits must ignore OOB detector output:

• RXELECIDLEMODE[1:0] = "11"
• RXBUF_RESET_ON_EIDLE = FALSE.

Linked Answer Records

Associated Answer Records