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About DS80PCI102 EEPROM resister map (RXDET) .

Satoshi
Guru 19485 points
Other Parts Discussed in Thread: DS80PCI102, DS80PCI402, DS125BR820

Please let me know about DS80PCI102 EEPROM resisrer map.

・I didn't find RXDET resister on the datasheet page 20~23.

 My idea is attached, is it correct?

1200.DS80PCI102_EEPROM.pdf

・If it was correct, RXDET resister are "reserved".

 Please teach me the setting method.

・Is DS80PCI102 resister map not same DS80PCI402 resister map? 

 

Best regards,

Satoshi

  • 0
    TI__Mastermind 29635 points

    Hi Satoshi-san,

    You are correct. The datasheet has marked "Reserved" where the EEPROM should indicate the RXDET override bits. The DS80PCI102 register mapping to EEPROM is exactly the same as the DS80PCI402 mapping.

    For a more comprehensive EEPROM mapping table, please reference the DS125BR820 datasheet, which uses the shares the same EEPROM-to-Slave SMBus Register mapping.

    Thanks,

    Michael

  • 0 in reply to Michael Lu (Santa Clara)
    Guru 19485 points

    Dear michael-san

    Thank you for reply.

    Is DS80PCI102 correct by the same control method as DS80PCI402?


    ※For example, Read/Write　to "reserved"(=DS80PCI402's RXDET), is it OK?

     

    Best regards,

    Satoshi

  • 0 in reply to Satoshi
    TI__Mastermind 29635 points

    Hi Satoshi-san,

    That is correct, but care must be taken regarding when to apply this thought. It is important to ensure that the register maps match for the DS80PCI402 and DS80PCI102 before determining whether an EEPROM address bit is identical between both parts.

    For example, in  the case of something like the RXDET, you can relate the same register control bit for DS80PCI102 and DS80PCI402 RXDET, because the same function is mentionedin the same Slave Mode SMBus register location, so they will map to the same EEPROM location.

    Alternatively, if for any reason the SMBus Slave Mode Register for the DS80PCI402 has a specific register bit that is shown as "Reserved" in the SMBus Slave Mode Register map for the DS80PCI102, then the EEPROM register bit meaning is not the same, and the function that applies for the DS80PCI402 cannot be assumed for the DS80PCI102. For example, the EQ boost information seen in Channel 7 of the DS80PCI402 (Reg 0x41) correspond to Reserved bits for the DS80PCI102. Therefore, in EEPROM, the location for Channel 7 EQ boost in the DS80PCI402 do not translate to an equivalent meaning in the DS80PCI102, where it is Reserved and should not be changed.

    Thanks,

    Michael