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MPC8555 pci issue

Question asked by amit jagtap on Dec 17, 2012
Latest reply on Apr 8, 2013 by lunminliang

Hi all,


we have a mpc8555 custom based board, we connected a pci to usb bridge(32 bit, 33MHZ,PCI1) on it thru IDSEL18.

we are not able to get the vendor and device id of the chip when we are doing configuration address reg write.

it seems all transactions are correct(pci_frame,idsel,irdy,trdy etc..).

what is the basic configuration required to read the chip configuration.