> In recent discussion about IBM IIC I mentioned that I had a hw were > 1-byte read scan locked the bus. > > I just rechecked IBM PPC 440GP ref platform "Ebony" and indeed it has > an i2c device which behaves this way. > > According to Ebony manual it's a CDC850 clock buffer (i2c address > 0x69). To recover the i2c bus I have to reset the whole board, not > just I2C controller. With "1-byte read" do you refer to SMBus' "quick command" with bit 1: S Addr 1 [A] P or "receive byte"? S Addr Rd [A] [Data] NA P Or would both lock it? > Just my $.02 I just hope that everyone will contribute the same and we'll end up with a bright shiny buck ;) Thanks. -- Jean Delvare http://www.ensicaen.ismra.fr/~delvare/
