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XIO2001: Use INTA-D interrupt on SERIRQ disable? Can configure XIO2001 as PCIe GEN1 device?

Motoyasu Hattori
Genius 11005 points
Part Number: XIO2001

Hi,

This is basic question.

 

*1. When /SERIRQ pin is pull-down (SERIRQ disable), can customer use INTA-D interrupt?

*2. Can user configure XIO2001 as PCIe GEN1 device?

 

Please advise us.

Thank and best regards,
M.HATTORI.

  • 0
    TI__Guru* 93670 points

    Hi Hattori-San,

    1). /SERIRQ and INT[D:A] are different from one another.

    INT[D:A] inputs are asynchronous to the PCI bus clock and will detect state changes if PCI bus clock is stopped. Interrupts that are not used should be tied together through a single resistor and tied to Vccp.

    On the other hand /SERIRQ is synchronous to the PCI bus clock and is used for serializing the 16 ISA interrupts. Note SIRQ edge control register in data sheet(0xE0 & 0xE2).

    2). XIO2001 runs at 2.5 Gbps X1 link and complies with PCIe base specification Revision 2.0. 

    Regards ,, Nasser