LG KG270 Service Manual - Page 25
LCD Interface3-wire SPI interface
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3. TECHNICAL BRIEF 3.5 LCD Interface(3-wire SPI interface) LCD_RESET SSC0_CLK R205 R207 C208 NA MTPG 47 47 MLED C209 27p C210 27p MLED2 R210 100K 2V8_VIO CN200 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 IMSA-9671S-13Y902 (ENQY0013801) MTPD R206 R208 MLED1 C221 1u LCD_ID C211 27p C212 27p 47 CS3 47 SSC0_MTSR C213 C214 NA NA Figure 3-5-1. LCD Interface VBAT CHARGE PUMP MLED W_LED_DRV R202 C202 100K 27p U200 5 IN AAT3157ITP-T1 10 C1+ 8 CP 11 EN_SET 4 GND C1- 9 7 C2+ 6 C2- D1 1 2 D2 D3 3 NC 12 C200 1u C201 1u MLED1 MLED2 C203 C204 27p 27p Figure 3-5-2. Charge pump interface - 26 -
3.5 LCD Interface(3-wire SPI interface)
3. TECHNICAL BRIEF
- 26 -
Figure 3-5-1. LCD Interface
IMSA-9671S-13Y902
(ENQY0013801)
47
R208
NA
C213
27p
C210
47
R206
C209
27p
1u
C221
27p
C211
R205
47
NA
C214
47
R207
2V8_VIO
14
15
1
10
11
12
13
2
3
4
5
6
7
8
9
CN200
NA
C208
MTPG
MTPD
R210
100K
C212
27p
MLED2
MLED1
SSC0_CLK
SSC0_MTSR
CS3
LCD_RESET
MLED
LCD_ID
Figure 3-5-2. Charge pump interface
CHARGE PUMP
C204
27p
4
GND
IN
5
12
NC
AAT3157ITP-T1
10
C1+
C1-
9
C2+
7
C2-
6
8
CP
D1
1
2
D2
D3
3
11
EN_SET
U200
C200
1u
R202
100K
27p
C203
1u
C201
C202
27p
VBAT
MLED
W_LED_DRV
MLED1
MLED2