LG 26LG30D Service Manual page 14

5.6. E 2 PROM Data Write
(1) Signal TABLE
LEN : 84h+Bytes
CMD : 8Eh
ADH : E 2 PROM Slave Address(A0,A2,A4,A6,A8), Not 00h
(Reserved by Buffer To EEPROM)
ADL : E 2 PROM Sub Address(00~FF)
Data : Write data
(2) Command Set
Adjustment item CMD(hex)
EEPROM WRITE
* Purpose
1) EDID write : 16-byte by 16-byte, 8 order (128-byte)
write(TO "00 – 7F" of "EEPROM Page A4").
2) FOS Default write : 16-mode data (HFh, HFl, VF, STD,
HP, VP, Clk, ClkPh, PhFine) write
3) Random Data write : write the appointment Address of
E 2 PROM.
5.7. VRAM Read
- Send CMD(70h) to read Video RAM value from MICOM And
save its value to 128-Bytes Buffer(Common Buffer for the
use of EDID)
- Delay 500ms (Time to Wait and Read Video RAM from
MICOM)
- Be transmitted the contents of MICOM's 128-bytes Buffer to
PC. (128th Data is the CheckSum of 127-bytes data : That's
OK if the value of adding 128-bytes Data is Zero)
START 6F A Data 1
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LEN Remark
E8 94 16-Byte Write
84+n n-byte Write
70 00 00
... Data 128 A CS NA
Delay 20m
STOP
- 14 - LGE Internal Use Only