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questions about PCI 9052

Discussion in 'Misc Electronics' started by lynch, Sep 2, 2003.

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  1. lynch

    lynch Guest

    We are debugging a PCI board and met some difficulties. The main chip is
    PCI 9052(for PCI bus), the local device is SJA1000 (for can bus). We used
    8-bit local bus (LAD[7:0]) as data-address multiplexed-mode, and using this
    local bus for PCI to communicate with SJA1000. Questions as follow:
    1. How to use the pin LBE[3:0], in the 8-bit multiplexed mode.

    2. The difficulty I met is I can¡¯t read the register of SJA1000.I
    want to know the possible cause and how to solve it.

    3. I want to know how to configure the ¡°Local Address Space (0~1) Bus
    Region Descriptor Register Description¡±, maybe there is some wrong with the
    timing between the PCI9052 and SJA1000.
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