Question for ALI about M1563 smbus transfer mode

Rudolf Marek R.Marek at
Fri Apr 8 22:19:47 CEST 2005


Please can you forward my question to ALI/ULI?  (maybe strip my name, so
it seems it comes from you directly :) Please take a look to your
datasheet first If it is written there or not, but I think it is not,
because simply commands belong usually to command register :)


We are implementing the driver for M1563 SMBus host and we ran into some
trouble. We have implemented in our SMBUS driver the "continous byte mode"
SMB_CMD 001, in all other chipsets it seems command belong to CMD
register, but this mode accepts command in DAT0 register. Is this
undocumented feature or a "silicon" bug?

Can you tell us if this is true also for M1535, M1541 and M1543C ?




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