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Visitor II
September 21, 2026
Question

Timing parameters for ULPI interface DDR Mode - STULPI01BTBR

  • September 21, 2026
  • 1 reply
  • 7 views

Hi,

 

In the STULPI01BTBR datasheet I could find the timing spec only for SDR mode. I need to verify the DDR mode on our board and could not find the DDR mode timing spec. Can anyone please help to find the timing spec for ULPI interface DDR Mode.

 

Regards,
Shivakumar

1 reply

Peter BENSCH
ST Technical Moderator
September 21, 2026

Welcome ​@Spuran, to the community!

ULPI DDR uses 4-bit data clocking, is an optional feature of the ULPI Specification 1.1, and is not implemented in the STULPI01B.

Hope that answers your question?

Regards
/Peter

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