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Re: problem with REQ# signal
I'm not a PCI expert.
My advice is checking pull-up resistors.
PCI arbiter should pull-up the req# signals with the specified resistors.
If PCI arbiter has integrated(internal) pull-up resistors, this is not your solution.
Otherwise, it can be your solution.
More detail explanation is needed if you want to get the right answer from experts.
For example, PCI master card has XX's XX PCI chip and host/PCI bridge chip is XX's XX.
> Hi experts,
> I am working with a PCI master card and trying to do some PCI transaction with out
> putting a Bus arbiter. I have asserted the GNT# pin with a pull down. While trying
> for a PCI transfer, the REQ# pin is going low and not coming to a high state.
> Other bus signals are also not showing any activities.
> please help
+++ LECOS (Lee, Cheon-Su), +82-31-209-5204, firstname.lastname@example.org
+++ Engineer / Network / C&C SOC Products / Samsung Semiconductors
+++ San#24, Nongseo-Ri, Kiheung-Eup, Yongin-City, Kyunggi-Do, Korea