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Original question:

DS160PT801: Cascading DS160 and MUX4412

DS160PT801: DS160PT801 – SINCON EEPROM Programming & SRIS Mode Configuration (PCIe x4 + REFCLKOUT)

Tai-Quan Chen
Prodigy 10 points

Part Number: DS160PT801

Hi TI team,

I am currently working on the DS160PT801 PCIe retimer and have a few questions regarding configuration using SINCON.

1. EEPROM Programming via SINCON

I am able to use SINCON to modify the device registers successfully. However, I encountered an issue where:

  • The register settings do not persist after power cycle
  • It seems that the configuration is not written into EEPROM

Could you please advise:

  • What is the correct procedure to write register settings into EEPROM using SINCON?
  • Are there any specific steps, modes, or commands required to enable EEPROM programming?
  • Is there any limitation or requirement (e.g., external EEPROM wiring, write enable, etc.)?

2. Request for Example Configuration (HEX File)

If EEPROM programming via SINCON is not supported or recommended, I would like to request your assistance:

Could you help provide an example HEX configuration file for the following setup?

  • PCIe x4 configuration
  • REFCLKOUT+/- enabled (clock output active)
  • SRIS mode enabled

This would help us:

  • Verify our configuration
  • Perform further debugging and signal validation

Additional Information

  • Device: DS160PT801
  • Application: PCIe signal redriving on motherboard / riser card
  • Current status: Register configuration works, but not persistent after reboot

Thank you for your support.

Best regards,
Tai-quan Chen

  • 0
    TI__Expert 6642 points

    Hi Tai-quan,

    Please see my comments below: 

    Tai-Quan Chen said:
    What is the correct procedure to write register settings into EEPROM using SINCON?

    Please see the eeprom page in DS160PT801EVM user's guide for instructions on EEPROM read writes.

    Tai-Quan Chen said:
    • Are there any specific steps, modes, or commands required to enable EEPROM programming?
    • Is there any limitation or requirement (e.g., external EEPROM wiring, write enable, etc.)?

    This depends on the EEPROM and configuration with DS160PT801. Please see DS160PT801EVM schematic for reference implementation of EEPROM.

    Tai-Quan Chen said:

    Could you help provide an example HEX configuration file for the following setup?

    • PCIe x4 configuration
    • REFCLKOUT+/- enabled (clock output active)
    • SRIS mode enabled

    Please see attached eeprom file:

    https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/138/DS160PT801_5F00_4x4_5F00_REFCLKen_5F00_SRIS.hex

    Best,

    Charles