> Hi > I have a problem about the decoder. I have two 7111 decoder in my > card, they can be knock down. It seems that > they can all work at the same time. But I wonder how can it do that. > When I initlized the I2C device, I only give the same device address, > the 7111's address is 0x48, how can the system distingush the two > deocoder use the same address?
It can't. If my memory serves me right, there are two likely possibilities of getting two the same I2C devices to work. First, and trivial case: they are on two different busses. Second, the 7111's have two possible addresses, indead 0x48 and I don't know the other one by heart. If they are really on the same bus, and have the same address, there's no distinguishing between them. I believe behaviour of the I2C bus is undefined in this case. Regards, Yuri van Oers _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
