Tool/software:
Hi,
We are continuing to verify.
>Two TLK10232s are being used - did you use the loopback module to test the activity of both TLK10232s by themselves, if such a method was physically possible? The problem only happens in the hardware arrangement with two TLK10232s?
No issues occur when using the loopback module.
>The three error flags you reported are related to a link down event, a fault condition on the RX path, and a high BER condition
>In your diagrams it seems the TLK10232 on the right hand side is the one being checked for errors.
>Do we know if the TLK10232 on the left hand side has the same or different errors?
Sometimes the same error occurs.
Right side : PMA_LINK_DOWN PCS_RX_FAULT PCS_HI_BER
Left side : PMA_LINK_DOWN PCS_RX_FAULT PCS_HI_BER
Sometimes a different error occurs.
Right side : PMA_LINK_DOWN PCS_RX_FAULT PCS_HI_BER
Left side : HS_CHAN_NOSYNC PMA_LINK_DOWN PCS_RX_LINK_DOWN PCS_RX_FAULT PCS_NOT_LOCK PCS_HI_BER
Sometimes one side doesn't get an error.
Right side : PMA_LINK_DOWN PCS_RX_FAULT PCS_HI_BER
Left side : No Error
>Have you noticed any other symptoms of the link down and errors while the system is operating, or only when checking the flags?
We only check the flag.
We are performing PTP communication with this configuration.
Even if a link error occurs, it does not affect PTP.
>If the PMA errors are really a random event (nothing significant is happening in terms of external disturbances), then one possibility is that the signal quality between the two TLK10232s is marginal and random noise can sometimes be enough to cause signal errors or link drop. If you have methods to adjust the signal integrity settings of the PMA link, that could be a useful to experiment with.
Please tell me which registers in the TLK10232 can be set to adjust the signal quality settings of the PMA link.
Thanks,
TOSHIO
