On 7/21/08, Timur Tabi <timur@xxxxxxxxxxxxx> wrote: > Jon Smirl wrote: > > > You'd have to read the CS4270 datasheet in detail to see if can even > > be hooked up to an smbus controller. smbus is a subset of full i2c. > > > There's no mention of SM Bus anywhere in the CS4270 datasheet. Can I assume > that it won't work? SMBus devices will work on an i2c controller. But i2c devices won't always work on a smbus controller. i2c is a superset of smbus, it can do things smbus can't. SMbus (system management bus) is usually used for simple things like fan and temperature monitors. >From wikipedia on i2c: "Pure I²C systems support arbitrary message structures. SMBus is restricted to nine of those structures, such as "read word N" and "write word N", involving a single slave." > > I remember now trying to use a standard I2C-only function and it didn't work, > but that was a long time ago before I knew much about the hardware. I'll have > to try it again. > > > -- > > Timur Tabi > Linux kernel developer at Freescale > -- Jon Smirl jonsmirl@xxxxxxxxx _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
