DP83TC814R-Q1: Documentation register addresses mismatch

Vincent Brault

Part Number: DP83TC814R-Q1

Hello,

I have to write a driver for the DP83TC814R-Q1 PHY in a bare metal environement.

Looking at the documentation (data sheet SLNS663 and application note SNLA389B), it looks like there are some mismatches in register addresses.

For example, page 9 of SNLA389B states that register x0523 should be set to x0001 during configuration in slave mode, but register x0523 is not listed in registers summary of data sheet (SLNS663 page 58).

I have the same problem with all other registers mentionned (x0834, x0873, x0896 and x089E) in the application note for slave mode configuration

Can someone help me with that ?

Thanks

8 months ago

0 David Creger 8 months ago

TI__Mastermind 22851 points

Hi Vincent,

Descriptions for the mentioned registers are given in SNLA389 and should be written exactly as shown. These registers should not be modified beyond this and hence are reserved in the datasheet.

Thanks,

David

0 Vincent Brault 8 months ago in reply to David Creger

Prodigy 10 points

Hello David,

Thank you very much for your answer.

Is there any document showing all registers (even if reserved) and their fields description ?

I understand those values should not be modified but i'd like to know what I am tunning

Regards

Vincent

+1 David Creger 8 months ago in reply to Vincent Brault

TI__Mastermind 22851 points

Hi Vincent,

There is no additional document besides datasheet and SNLA389. These registers are tuning various ADC and DSP parameters to increase the robustness of link. Please write the script as shown in SNLA389, further tuning is not required.

Thanks,

David

0 Vincent Brault 8 months ago in reply to David Creger

Prodigy 10 points

Hi David,

Thank you for the clarifications.

Regards

Vincent

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DP83TC814R-Q1: Documentation register addresses mismatch