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XIO2001: CLKREQ pins, External Pullup

takanobu fukuoka
Prodigy 70 points
Part Number: XIO2001

Hello,

I want to know the recommended external pullup value for CLKREQ.

The resistance value cannot be calculated because the Low-level output current(IOL) of the CLKREQ pin is unknown.

What is the recommended external pullup value for CLKREQ?

Also, what is the IOL value?

Best Regards,

T. Fukuoka

  • +1
    TI__Guru* 93670 points

    Greetings,

    Recommendation is to use 10K ohm pull up to VAUX. PCI express electro-mechanical specification calls for minimum 4mA IOL @ 0.4V VOL. XIO2001 is compatible with this spec however i am not able to find data to show device has been characterized to meet this requirement.

    Regards ,, Nasser