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    Navigation: All forums > Pci > Message List > Message Post

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    From: Juanjo Garcés <juanjixx@h...>
    Date: Mon, 14 Jul 2003 15:56:02 +0000
    Subject: [pci] configuration cycles
    Top

    Hi everybody,
    
    I've taken a look to the pci-bridge for a few weeks, but i don't still 
    understand through where are done the configuration cycles from the 
    wb_slave.v to pci_master_32.v?particulary the read configuration cycles.
    
    Where comes the data in a read configuration cycle through?
    
    I guess that the data is requested with a read configuration cycle(state 
    S_CONF_READ from wb_slave) and the FSM respond with a retry, but then when 
    the data is available, the S_CONF_READ doesn't make any read from the FIFO 
    so i guess
    -either the data doesn't come through the fifos with a configuration cycle 
    read command,
    -or the data come through the fifos but it has to be read with a normal 
    delayed read command.
    -or maybe there's something else i haven't considered...
    
    I hope that I've made me understandable and also that someone can help me,
    
    thanks,
    
    Juanjo.
    
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