pd6729 and PCI bus freq. > 25Mhz

komurojun-mbn at nifty.com komurojun-mbn at nifty.com
Tue Dec 7 10:11:15 EST 2004

>The Intel document: http://www.intel.com/design/interconnect/applnots/2494310
>says that "If PCI_CLK operates at frequncy > 25Mhz, the MISC Control 2 regist
er, bit
>4 must be set to '1'. This same switch (fast_pci) is in the i82365 driver fro
>pcmcia-cs package.
>I don't know is this really needed. In my systems PCI clock is standard 33Mhz
 and I
>haven't encountered any problems with pcmcia timings. Just wondering.
>Best Regards, Jar

I think early revision of pd6729 defined the bit4 of the misc control2
register, and Cirrus deleted the bit 4 later.

Below document does not define it.


Best regards

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