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DS110DF111: Register Detail Mismatch between DS110DF111-Datasheet and SNLA245

MithunKumar V
Prodigy 20 points

Part Number: DS110DF111

Hi,

We are using 2 DS110DF111 retimers(in master mode) connected to single 2Kb external EEPROM . We tried loading EEPROM for configuring retimers as suggested in document:SNLA245.

It was observed that retimer register bytes from 0x57 to 0x5F (Highlighted in yellow in Fig 1) were not provided in the retimer datasheet. But mentioned in SNLA245

Fig 1:

image.png
    Also the same missing address bytes were called out in the programming guide as highlighted (yellow) in Fig 2 below.

Fig 2:

image.png

 

    Also for address byte 0x60 in retimer, it is shown as bits 7:0 are configurable in EEPROM, but only 4 [3:0] bits are able to be set in EEPROM (refer highlighted in blue in Fig 2).

 

Queries

    1. Kindly suggest why such mismatch between the datasheet & programming guide. Which one should be considered?
    2. Also confirm if all eeprom configurable bits of DS110DF111 be written in continuous sequence in eeprom? Else suggest the right format.
    3. How to configure the bits [7:4] of 0x60 retimer address byte through eeprom configuration?

  • 0
    TI__Mastermind 42528 points

    Hi MithunKumar,

    We're looking into this and will get back to you with more details next week.

    Thanks,

    Drew

  • 0 in reply to Drew Miller1
    TI__Mastermind 42528 points

    Hi MithunKumar,

    Apologies for the delay.  I looked into this and am able to confirm that the data sheet is correct.  There was an error in the EEPROM application note on this.  From 0x57 (in app note) onwards, there is an offset of 9 addresses.  Where the app note shows 0x57[7], this should actually be 0x60[7].  In app note, 0x5E[5] corresponds to 0x67[5], etc.

    MithunKumar V said:
    1. Kindly suggest why such mismatch between the datasheet & programming guide. Which one should be considered?

    Please use the data sheet.

    MithunKumar V said:
    2. Also confirm if all eeprom configurable bits of DS110DF111 be written in continuous sequence in eeprom? Else suggest the right format.

    Yes, the configuration bits are continuous in EEPROM.

    MithunKumar V said:
    3. How to configure the bits [7:4] of 0x60 retimer address byte through eeprom configuration?

    These can be configured and are incorrectly noted as 0x57[7:4] in the app note.

    Thanks,

    Drew