TDA4VM ddr retention

YUTAI LI1

Intellectual 400 points

Other Parts Discussed in Thread: TDA4VM

Hi TI Support Team

TDA4VM have pin name: DDR_RET / External IO Retention Enable. But i don't find more detail in datasheet and TRM.

Can you please explian to more info about this DDR_RET featue.

Thanks

Yutai

over 5 years ago

0 Anand Mahadevan SS over 5 years ago

TI__Expert 8165 points

Hi Yutai,

I will ping a board library expert to look into this.

0 YUTAI LI1 over 5 years ago in reply to Anand Mahadevan SS

Intellectual 400 points

Any update?

0 M V Pratap Reddy over 5 years ago in reply to YUTAI LI1

TI__Intellectual 1160 points

Hi Yutai,

DDR_RET pin provides option to control DDR data retention mode from an external source. Typical use-case will be controlling this pin from a power control devices like PMIC while entering into low power modes. Setting the DDR_RET pin high allows the data to be retained provided CKE and RESET_N pin states are maintained while other powers can be turned OFF

- Pratap

Processors

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TDA4VM ddr retention