Specifications

Chapter 2-25

CMD DATA Description return

4Bh Write the data to device through SMBus interface

1 00h-FFh Slave address of device

2 00h-FFh Lo byte address if device is EEPROM otherwise is command

or register

3 00h-FFh Hi byte address if device is EEPROM, otherwise is zero

data byte to write 0=Write

0xFE =

Fail

4Ch Read data from devices through SMBus

1 00h-FFh Slave address of device

2 00h-FFh Lo byte address if device is EEPROM otherwise is command

or register

3 00h-FFh Hi byte address if device is EEPROM, otherwise is zero data byte

(00h-FFh)

4Dh Write byte into EEPROM

1 00h-FFh EEPROM address

2 00h-FFh Data byte for write byte 0=Write

0xFE =

Fail

4Eh Read byte from EEPROM

00h-FFh EEPROM address Data byte

0xFE =

Fail

4Fh Reserved for R591 utility None