BenQ G2220HD Product Service Manual page 36

EEPROM Bank R/W (For Debug using only, not for Production Line Write EEPROM directly)
Read EEPROM Bank 0
Read EEPROM Bank 1
Read EEPROM Bank 2
Read EEPROM Bank 3
Write EEPROM Bank 0
Write EEPROM Bank 1
Write EEPROM Bank 2
Write EEPROM Bank 3
Note A: Byte4 (cksum) = Byte1 + Byte2 + Byte3
Note B: Data = The value write to MCU or EEPROM
Note C: XX = don't care, any value (<=0xFF).
When PC Host sends 0x7D command to MCU, MCU must return as following (2 bytes)
Return Code
Checksum error code
Normal return code
If normal return code is exact FCh
Addr
XX cksum √
B0 ess
Addr
XX cksum √
B1 ess
Addr
B2 ess XX cksum
Addr
B3 ess XX cksum
Addr
ess Data cksum √
B8
Addr
ess Data cksum √
B9
Addr
BA ess Data cksum
Addr
BB ess Data cksum
R-Byte1
the above Byte3 (/data)
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√
(For 24C08 type)
√
(For 24C08 type)
√
(For 24C08 type)
√
(For 24C08 type)
FC
FC
R-Byte2
AA
FC
CF