DS320PR822: Does EEPROM self load allow all registers to be configured

Hi Mark, 
Your understanding is correct. Two kinds of registers exist:

Any register that does not fall under any of the two are known as "reserved" registers whose contents should not be modified. 

There is a programming guide on Mysecure. If you don't have access please let us know so we can give you access.

Regards, 

Vicente 

Hi Vicente,

I believe you've misunderstood my question or perhaps I wasn't clear enough in my explanation..

I am interested in the EEPROM map for the DS320PR822. For example, the DS280BR810 family EEPROM map is described by 'snla244.pdf' in tables 11 & 12. Examination of those tables reveals that only a subset of the actual register set can be controlled/set from the EEPROM during self-load.

I am likewise concerned that only a subset of the DS320PR822 registers can be controlled/set during EEPROM self-load.

If you are able to find a document describing the EEPROM map for the DS320PR822 I would be very appreciative.

Thanks,

-Mark

Hi Mark, 
Like I mentioned previously we have an programming guide on Mysecure. If you do not have access please let me know so we can grant you access. 

Regards, 

Vicente 

Hi Vicente,

Please provide the TI document number for the programming guide you mention. And I will look in Mysecure specifically for it.

Note however, that I currently have SNLU032 Programming Guide, and document *does not* have (as far as I can tell) the EEPROM map that I mention and that I need.

Again, please refer to SNLA244 tables 11 and 12 for the sort of info I need for the DS320PR822.

Thanks,

-Mark

Hi Mark, 
Only a subset of registers get programmed via GUI. There are all CTLE or DC gain related registers. These are the only things the EEPROM controls. 

Regards, 

Vicente 

Hi Mark, One more thing. DS320PR822 Mux cannot be controlled via EEPROM. It must be controlled via pins SEL0 or SEL1.

Regards, 

Vicente 

Hi Vicente,

I am not trying to be difficult. My request is borne out of experience and necessity..

Namely, we will need to program the EEPROM during our manufacturing process. Therefore, we will need to know what data is required in the EEPROM, what registers are being controlled in particular, and the order and size of that data. As part of the design process, we need to size the EEPROM for our application and to select an appropriate EEPROM. We presently use the DS280MB810 on an existing design, and one of very first things done during manufacturing is to program the EEPROM. The DS320PR822 will be no different.

An EEPROM map is required. We absolutely require information as shown in tables 11 and 12 of SNLA244, except that it be for the DS320PR822. Does TI not have such information for the DS320PR822, so that you are not able to provide it? If not, then the TI engineering team will need to create such a table/document and you will probably need to ask them to provide it.

Please help us make designing this part in a success.

Thanks,

-Mark

Hi Mark, 
Please look into SNLA342. You will find it under PCIE4 Redriver Design. If you do not have secure folder access, please send me your email via private message so we can give you access. 

Regards, Vicente