DDR3 PHY WR_xxx Register Setting

Takahiro Ogo

Hi

My customer try to configure manually the DDR PHY Register.
They produced the set value in the software leveling, but would like to fine adjustment.

And so I have a question.
They change the following registers Are these not affected "Read Timing" ?

WR_DQS_SLAVE RATIO
WR_DATA_SLAVE_RATIO

Best Regards,
Taka

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

Hi,

Please post which processor you are asking about and if possible rephrase your question, because I don't understand what you are asking.

0 Takahiro Ogo over 9 years ago in reply to Biser Gatchev-XID

Genius 5940 points

Hi,

Sorry, the processor is AM335x.
if WR_DQS_SLAVE RATIO and WR_DATA_SLAVE_RATIO are changed, Read Timing is changed?
I think that Write Timing is only affected by changing these registers.

Best Regards,
Taka

0 Biser Gatchev-XID over 9 years ago in reply to Takahiro Ogo

TI__Guru**** 393215 points

Your understanding is correct. There are separate registers for read.

Processors

Processors forum

DDR3 PHY WR_xxx Register Setting