ViewSonic VS11425 Service Manual page 46

8.4. MCU
D1241N4148
A
2 PC5V
D1261N4148
A
2 DVI5V
3.3DVCC
3.3V
1,3,5 3.3DVCC
3 RESET_MCU
VCC_MCU
HDCP EEPROM
I107
8
VCC
7
WP
R190 NC/100
6
SCL
R191 NC/100
5
SDA
NC/AT24C04N-10SC
HDCP_SCL
HDCP_SDA
HDCP EEPROM
ADD NET
HDCP_SCL
HDCP_SDA
ADD
R190 , R191, C155 , I107
P105
1
2
3
4
5
6
7
8
9
10
C147
C153 C146 C148
100nF 100nF 100nF 100nF
DGND
ViewSonic Corporation
VCC_MCU
D1251N4148 Q107
K A K E C
2N3906
+ C142
K
10uF/16V
R181
4.7K
R182 D127
Q108
1N4148
E C
4.7K
2N3906
RESET
R183 R184
4.7K
D128
4.7K
DGND
1N4148
DGND
2.2K
C155
NC/100nF
1 MUTE
A0
2
A1
3 1 adj_BACKLIGHT
A2
5 VOLUME
4
GND 1 on_BACKLIGHT
GREEN
ORANGE
R160 22
2,3 SCL_D2
R161 22
2,3 SDA_D2
UP
DGND
5 MUTE_S
DOWN
POWER
R163 22
2,3 SDA_D1
R164 22
2,3 SCL_D1
MUTE pin change to mcu p5.0
MUTE_S pin change to mcu p3.3
hunk 06'0706
hunk 06'0704
R187 100 MUTE
100 SELECT
R172
R173 100 DOWN
R174 100 UP
R175 100 MENU
LED_GREEN
R176 100
LED_ORANG
R177 100
R178 100 POWER
48 37
C149 C150 C151 C152
1 36
100nF 100nF 100nF 100nF
P5單向 P1雙向
MTV512M-LQFP48
P3 P6單向
雙向 X1,X2
12 25
13 24
43
Confidential - Do Not Copy
+5V
add R189 res pull high 0630
C140 C141
100nF
100uF_16V
DGND DGND
RP03 RP04
R155 R156 R158
R157
R159 R189 RESET
2.2K 10K
10K
10K 10K
10K_RP 10K_RP
44
P5.0/DA0
45
P5.1/DA1
46
P5.2/DA2
47
P5.3/DA3
48
P5.4/DA4
1
P5.5/DA5
2
HSCL2/P5.6
3
HSDA2/P5.7
9
P3.2/INT0
10
P3.3/INT1
11
P3.4/T0
12
P3.5/T1
13
P7.6/CLKO
14
P7.7
TX
8
HDA1/TX/P3.1
RX
5
HCL1/RX/P3.0
I106
R165 R166 MTV512/RTD2120
2.2K 2.2K
X101
1 2
24MHz
VCC_MCU
R168 6.8K
+5V
C144 C145
10pF 10pF
R170
820
Q105 GREEN
B
R171 10K
2N3906
LED_GREEN
r170.r179~modify value 330R for 5mA 0627
+5V
R179
820
Q106 ORANGE
B
2N3906
R180 10K
C
3
LED_ORANG
1 2
B E
VG2030wm-1
RP01 RP02
10K_RP 10K_RP
IICSDA R153
IICSCL
R154
RTD_SD0 3
RTD_SD1 3
RTD_SD2 3
RTD_SD3/SDI 3
RTD_SCSB 3
RTD_SCLK 3
R192 R193
RP05
10K
10K
29 10K_RP
NC
28
VSYNC VS 2 add net"DVI_DET"
MCU
27
VDD_CTRL 1
P6.7
26
P6.6/CLK0
25
P6.5
24
P6.4
23
P6.3/AD3
22
P6.2/AD2 SELECT
21
P6.1/AD1
MENU 3.3DVCC
20
P6.0/AD0
MCU pindefine change
R167
1K
P6.1 change to P6.2
P3.4 change to P6.0
P3.5 change to P6.1
R169
ADD pull high
10K
R192 , R193
DGND
DGND 1,2,3,5
DGND
C143
I105
8 7
VCC WP
100 5 3 100nF
SDA A2
6 2
SCL A1
100
4 1
GND A0
*24LC16
DGND
0616
Closed to MCU
R162 0
XO_24M 3
DVI_DET 2
VGA_DET0 2
DVI_HDCP 2
hunk 06'0704
ViewSonic Corporation
Model
Title
MCU
Date Rev: