50PG2000-ZA (CHASSIS:PD83A) - LG TV Service Manual (repair manual). Page 13

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(5) EEPROM DATA READ
1) Signal TABLE
2) Command Set
* To read the appointment Address of E2PROM by 128(80h)-
byte
(6) EEPROM Data Write(serial number D/L)
1) Signal TABLE
CMD : 8Eh 
LENGTH
: 84h+Byte
ADH : E2PROM Slave Address (A0, A2, A4, A6, A8), 
Not 00h (Reserved by Buffer To EEPROM)
ADL
: E2PROM Sub Address (00~FF)
Data : Write data
2) Command Set
* Description
- EDID write : 16-byte by 16-byte, 8 order (128-byte) write
(TO “00 - 7F” of “EEPROM Page A4”)
- FOS Default write : 16-mode data (HFh,HFl,VF,STD,HP,
VP,Clk,ClkPh,PhFine) write
- Random Data write : write the appointment Address of
E2PROM
3) 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°Øs 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)
10. Set Information
(Serial No & Model name)
10-1. check the serial number & Model Name
(1) Push the menu button in DTV mode.                
Select the STATION ==> Diagnostics ==> To set
(2) Check the Serial Number
- 13 -
Delay 100ms
128Bytes
E7
A0
A2
A4
A6
0
80
0
80
0
80
0
80
0-page  0~7F    Read
0-page  80~FF  Read
1-page  0~7F    Read
1-page  80~FF Read
2-page  0~7F    Read
2-page  80~FF  Read
3-page  0~7F    Read
3-page  80~FF  Read
EEPROM READ
1
2
3
4
5
6
7
8
No.
Adjustment
contents
CMD
(hex)
ADH
(hex)
ADL
(hex)
Details
START
6F
A
Data1
...
A
Data128
CS NA STOP
START 6E A 50 A 84 A 03 A
70
A 00 A 00 A CS A STOP
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