ViewSonic N2750w-1 Service Manual page 22

6.11 MCU
P118
JP_RST JPHOST_HS
1 2
JP_RDY
3 4
JP_PX_sel
5 6
+3V3
JPD0 JSPI_CS
7 8
JPD2 JPD1
9 10
JPD4 JPD3
11 12
JPD6 JPD5
13 14
JSPI_REQ JPD7
15 16
JSPI_CLK JP_RxD
17 18
JPHS JPHREF
8 JPHS 19 20
VD_RSTn JP_TxD
21 22
JPVS
23 24
SDA SCL
25 26
JP_DET JPCLKin
27 28
29 30 VCC
NC
JP[0..7] 8
RP24 NC
JPD0 JP0
1 2
JPD1 3 4 JP1
JPD2 JP2
5 6
JPD3 7 8 JP3
JPD4 JP4
1 2
JPD5 3 4 JP5
JPD6 JP6
5 6
JPD7 JP7
7 8
RP25 NC
Reserved for external
photoframe daughter board
R421 NC/10K I136 C541 NC/100n
+3V3MC +3V3MC
NC/74AHC00D
JP_PX_sel 1 14
Ain1 VDD
CDRWRE
2 13
Ain2 Din1
3 12 JP_PX_sel
Aout Din2
4 11
Bin1 Dout
JPCLKin
5 10
Bin2 Cin1
6 9
Bout Cin2
7 8
GND Cout JPCLK 8
CDRWRE R423 NC
R426 NC
74AHC00D is reserved
for pixel OSD with
JPEG module exist at
same time
+3V3MC VMCU
LED1 R435
4K7
LED2 R436 4K7
IR_INT
ISP_SW R492 0R
P27_POWERSW
P24_DEC
P25_INC
P23_DOWN
P22_UP
P21_ENTER
P26_MENU
ViewSonic Corporation
1 48
NC NC
2 47
NC NC
+3V3MC
3 46
NC NC
4 45
NC NC
JP7
5 44
NC D7
6 43 JP6
/SE D6
CDRDY JP5 I133
7 42
R//B D5
CDRDRE 8 41 JP4 NC
/RE D4
CDA1CE0 9 40
/CE NC
ALE
10 39 31
+3V3 NC NC ALE
11 38 PSEN 32
NC NC PSEN
C538
12 37
VCC VCC +3V3
A0
100n 13 36 101
VSS VSS RXM_A0
C539 A1
14 35 100
NC NC RXM_A1
A2
15 34 99
NC NC RXM_A2
CDCS0CLE 100n A3
16 33 98
CLE NC RXM_A3
CDCS1ALE 17 32 JP3 A4 70
ALE D3 RXM_A4
A5
CDRWRE 18 31 JP2 69
/WE D2 RXM_A5
19 30 JP1 A6 68
+3V3 /WP D1 RXM_A6
A7
20 29 JP0 67
NC D0 RXM_A7
R420
21 28
NC NC
NC 22 27 A8 17
NC NC P20
A9
23 26 18
NC NC P21
24 25 A10 19
NC NC P22
CDA0WP A11
20
P23
I132 NC A12 21
P24
A13
22
P25
+3V3 A14 23
P26
A15
24
P27
I135
5
NC D0 7
P00
CDA1CE1 D1
2 4 8
JPHREF 8 P01
D2 9
P02
D3
3 Reserved 10
P03
D4 11
P04
for pixel D5
12
P05
D6 13
P06
based OSD D7
14
P07
JP0
97
CD_D0
JP1 96
CD_D1
+3V3MC
JP2 95
CD_D2
JP3
94
CD_D3
JP4 93
CD_D4
JP5
92
CD_D5
R422 JP6 91
CD_D6
MCU JP7
90
NC CD_D7
Reset 89
2 DVI_DET CD_D8_LD0
P21_ENTER
88
CD_D9_LD1
RESETn-C P22_UP 85
CD_D10_LD2
P23_DOWN 84
CD_D11_LD3
P24_DEC 83
CD_D12_LD4
P25_INC 82
CD_D13_LD5
P26_MENU
81
CD_D14_LD6
+ C542 P27_POWERSW 80
CD_D15_LD7
NC
117
CD_CD1
116
CD_CD2
CDA0WP
115
CD_A0_WP
CDA1CE0 114
CD_A1_CE0
CDA1CE1
113
CD_A2_CE1
CDCS0CLE 112
CD_CS0_CLE
CDCS1ALE 111
CD_CS1_ALE
CDRWRE
110
CD_WR_WE
CDRDRE 109
CD_RD_RE
106
CD_INTREQ_STB
105
CD_RST
104
CD_SM_CE2
CDRDY 103
CD_RDY / RNB
118
+3V3MC CD_SEL
RESETn-C
39
RSTn
66
EPCLK
R439 MCUXin 77
XTALI
NC MCUXout
76
XTALO
X106 8MHz
C546 C547
NC NC
3 DDCSCL
3 DDCSDA
+3V3MC +3V3MC
VCC
R430 R431
100R 100R
3 Q126
MMBT3906
1
2
Q127
3
VMCU
1 MMBT3906
R493 1M
2
P122 C544
47uF/16V
1
X107
2
12MHz
3
+ C569 C564 C565
4
LED_G 10uF/50V 22p 22p
5
LED_R
6
7
8
9
10
11
R491
12
10K
13
HEADER 13
3 HD_SEL
JSPI_REQ
KEY DEFINE CHANG TO JEAN SCL
3,4,5,6,7,8 SCL
SDA
3,4,5,6,7,8 SDA
2 DVI_PDn
LED1
LED2
TTFC-RSTN
8 TTfc-RSTn
2 DVI_SCDT
21
Confidential - Do Not Copy N2750w-1
+3V3MC
L179
+3V3
BEAD/200R
C528 C529 C530
C527
47uF/16V 100n 100n NC
VCC +3V3MC
3
P50
4 VD_RSTn
P51
5
P52 AF_SEL0 4
6
P53 AF_SEL1 4
35 3 2
AMP_STBY 10
P54 VI VO
36 JSPI_CLK C571
P55
37 JSPI_REQ C570
P56
100n
38
P57 VGA_DET 3
100n I140
JP_RxD NC
128
P40/RxD
127 JP_TxD
P41/TxD
PANELPWR
126
P42 PANELPWR 1
125 BACKLITn
P43 BACKLITn 1
EEWPn
124
P44
123 LED1
P45
LED2
122
P46
TTfc-RSTn
121
P47 TTfc-RSTn 8
ISPWR I134
53
P30
A0
54 12
TVM_PWRp 1
P31 A0
TTFC-INTn A1
55 11
P32/INT0n TTfc-INTn 8 A1
A2
56 IR_INT 10
P33/INT1n A2
A3
57 9
P34 SYS_PD 1 A3
58 JSPI_CS A4 8
P35 A4
PHDPDP A5
59 7
P36/WRn PHDPDP 8 A5
60 A6 6
P37/RDn HD_SEL 3 A6
A7
5
A7
40 ISP_SW A8 27
P10 A8
41 JP_RDY A9 26
P11 A9
BANK_SEL A10
42 23
P12 A10
43 A11 25
LVDSPDN 9
P13 A11
A12
44 4
P14 DVI_SCDT 2 A12
45 A13 28
P15 DVI_PDn 2 A13
SCL A14
46 29
P16 SCL 3,4,5,6,7,8 A14
47 SDA A15 3
P17 SDA 3,4,5,6,7,8 A15
BANK_SEL
2
A16
ISP_SW ISPWR 31
WE
ISP PSEN 24
OE
48 22
MP3_CLK CE
49
MP3_REQ
50 P121 NC
MP3_D
NC
71
MMC_CLK
Reserved for 128K ISP
72
MMC_CMD
73
MMC_DAT
74
MMC_VDDE
R429 NC
+3V3
USBD+ R432 NC P125
63
D_PLUS USBDM 3
64 USBD- R433 NC NC
USBDP 3
D_MINUS
JPVS
5 JPHS
GND
JP_RDY
27 4
TEST1 NC
28 USBD+ R489 NC DPLUS 3 JPHREF
TEST2 D+
USBD- R490 NC DMINUS JPHS
29 2
TEST3 D-
30 1
TEST4 VDD
R437 JPCLKin
33 EAN NC
EAN +3V3MC
Reserved for 128K ISP
R438 JPD7
NC JPD6
JPD5
JPD4
JPD3
JPD2
JPD1
JPD0
JP_TxD
JP_RxD
VMCU
C566 100n
C563
R497 0R 10uF/50V
VCC
35 43 PANELPWR
EA/VP P0.0 PANELPWR 1
42 BACKLITn
BACKLITn 1
P0.1
AF_SEL0
21 41
X1 P0.2 AF_SEL0 4
40 AF_SEL1
AF_SEL1 4
P0.3
VD_RSTn
39
P0.4 VD_RSTn 5,6,7
20 38 LVDSPDN
X2 P0.5 LVDSPDN 9
PANELPWR
37
P0.6 SYS_PD 1
36 AF_SEL0
P0.7 TVM_PWRp 1
RESETp-C AF_SEL1
10
RESET
24 P20_AVSEL SYS_PD
P2.0
P21_AUTO TVM_PWRp
25
P2.1
JSPI_CLK 14 26 P22_UP
P3.2/INT0 P2.2
IR_INT 15 27 P23_DOWN
P3.3/INT1 P2.3
AMP_STBY P24_LEFT
16 28
P3.4/T0 P2.4
17 29 P25_RIGHT
P3.5/T1 P2.5
P26_MENU
30
P2.6
2 31 P27_POWERSW
P1.0/T2 P2.7
3
T1.1/T2EX
4 19 EEWPn
P1.2 P3.7/RD
5 18
P1.3 P3.6/WR PHDPDP 8
6 32
P1.4 PSEN
7 33
P1.5 ALE/P
8 13 JP_TxD
P1.6 P3.1/TXD
9 11 JP_RxD
P1.7 P3.0/RXD
I138
STK6012/128K/PLCC44
+3V3
C531 C532 C533 C534 C535 C536 C537
NC NC NC NC NC NC NC
VCC
4
SCL
3
SDA
2
1
P119
CON4/100mil
IIC TESTER
BOARD TOP BOARD BOTTOM
P120
A15
1 2 +3V3
A12 A14
3 4
D0 A13
5 6
D1 A8
7 8
D2 A9
9 10
D3 A11
11 12
D4 PSEN
13 14
D5 A10
15 16
D6 MCUXin
17 18
13 D0 D7 RESETn-C
DQ0 19 20
D1 ALE
14
DQ1 21 22
15 D2 BANK_SEL
DQ2 23 24
D3 A7
17
DQ3 25 26
18 D4 A6 ISPWR
DQ4 27 28
D5 A5
19
DQ5 29 30
20 D6 A4
DQ6 31 32
D7 A3
21
DQ7 33 34
A2 JP_TxD
35 36
A1 JP_RxD
37 38
A0
39 40 +3V3
32
+3V3
VDD
NC
C540 Debug Port
100n
16
VSS
+3V3
1
NC
30 I137
NC
1 8
PRE VCC
2 7 R424 0R EEWPn
E1 /WC
R425 100R SCL
3 6
E2 SCL
4 5 R427 100R SDA
VSS SDA
24LC16/SO8
C543 R428
100n NC B1-HREF
B2-VREF
B3-FIELD
BIB[0..7] 3,7,8
B5-HS
R445 NC BIB6 B6-VS
R446 NC BIB5
R447 NC BIB3 Change nets
R448 NC BIB2
R449 NC BIB1
R450 47R
JPCK 8
BIG[0..7] 3,7,8
RP28 NC
1 2 BIG7
BIG6
3 4
5 6 BIG5
BIG4
7 8
1 2 BIG3
BIG2
3 4
5 6 BIG1
BIG0
7 8
RP29 NC
VMCU