LG 27MK60TM Service Manual page 16

2
6.6 E PROM Data Read
6.6.1 Signal TABLE
START 6E
Delay 150ms
START 6F
6.6.2 COMMAND SET
Adjustment contents
No.
1 EEPROM READ
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
6.6.3 Use
2
Read E PROM's specific area as unit of 128(80h)-byte. ( 84h )
6.6.4 EDID Write
EEPROM access by using DDC2B protocol
1-Byte write
START A0
L : 0x00~0x7F
D : data
8-byte write
START A0
L : 0x00,0x10,....0x70
6.6.5 EDID Read
DDC2B Command.(A0/A1)
START A0
- 128 Byte transfer of EDID Buffer of MICOM
A 50 A 84 A
----------------------------------------------------------------------
A D1 A
CMD(hex
E7
A L D
A
A
A L A Data A
A 00 START A1
03 A CMD A ADH A ADL
128 Bytes
ADH(hex) ADL(hex)
)
A0
80
A2
80
A4
80
A6
80
A8
80
AA
80
AC
80
AE
80
STOP
A Data8 A
....
A Data1 . . .
- 16 -
A CS
Dn
Explanation
0 0-Page 0~7F Read
0-Page 80~FF Read
0 1-Page 0~7F Read
1-Page 80~FF Read
0 2-Page 0~7F Read
2-Page 80~FF Read
0 3-Page 0~7F Read
3-Page 80~FF Read
0 4-Page 0~7F Read
4-Page 80~FF Read
0 5-Page 0~7F Read
5-Page 80~FF Read
0 6-Page 0~7F Read
6-Page 80~FF Read
0 7-Page 0~7F Read
7-Page 80~FF Read
STOP
Data128 A CS
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Only training and service purposes
STOP
A
STOP
A
A STOP