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TUSB1210: CLOCK behavior in usb suspend mode

Part Number: TUSB1210

Tool/software:

Hi Expert,

when the device works in ULPI output clock configuration mode, and then change to ULPI usb suspend mode, what is the expected CLOCK pin behavior? Is it affected by the CLOCKSUSPENDM bit? 

Regards,
Hailiang

  • HI Hailiang:

        CLOCK signal should be stopped during PHY suspend mode.

    But CLOCKSUSPENDM is only valid in serial mode, no in ULPI mode. So it should not affect  CLOCK behavior in normal USB ULPI mode.

    Best

    Brian