ViewSonic N2752w-1M, Service Manual

Page: 68 / 121

8.3. MT8202
MTK modify
PWM2VREF
AO
SD
ATA5
A_DQ28
TESTN
2
A_RA3
GND
GP
IO5
IO
A7
A_DQ13
DV18A
AN0
VGAHSYNC_1
F_D[0..7]
HDM
IB
CLK
GND
TXD1
ADC_IN3
HDMIDE
GPIO16
SOY0
CVBS0
GND
A_
D
Q
0
HDM
IS
D3
RED+
GP
IO3
IO
SD
A
HDM
IS
D2
HDMIODCK
Y0
-
GP
IO
15
GND
TESTP3
SB33A
A_
D
Q
S1
HDMICEN
VI0
PB0
-
A_
D
Q
1
0
AVD
D
_
VFE0
AO
SD
ATA3
F_A
8
A_
D
Q
7
A_DQ14
VI2
1
VI2
3
F_D5
A_RA9
SB33B
DV
25A
GND
HDMIHSYNC
VI9
A_RA4
GND
MPX1
ADC_IN4
VI1
9
TESTP3
HDMISD3
VI10
UP3_5
SB18A
GND
TESTN4
GP
IO
12
LVDS_GND
XTALVDD
VFE_
G
N
D
1
PWM0 VPLLVDD2
AUDIO_GND
F_A
10
A_
D
Q
M0
GPIO11
GPIO7
A_DQ19
IOA1
IO
A3
URX
D
VFE_GND
PR0+
GND
GND
CLK1+
F_D1
DACVDDA
A_DQ29
GND
AAD
C
VSS
VFE_GND1
A_RA8
GND
IO
A2
SDV25A
GND
Y0
+
SB33A
DV33A
INT0_1
A_RAS_1
IRRCVR1
ADC_IN2
GPIO17
VPLLVDD1
PB0+
ADC_IN0
SD
A0
GND
VI7
A_DQ24 LVDDB
GP
IO
10
LVDDC
TXD1 GPIO5
VI2
0
GND
AVD
D
_
VFE1
AVICM
HDMIODCK
UP3_0
SY0
MPX2
A_WE_1
DACVDDB
AAD
C
VSS
A_
D
Q
2
AL
TESTN3
VI14
TESTN
1
VFE_
G
N
D
HDMIDE
VREF
GND AO
SD
ATA1
DCLK
VR
EF
A_BA[0..1]
TESTP1
PLLVDD1
SY0
AO
BC
L
K
AP1
A_DQ31
F_A
9
F_A14
AP3
AR
ADC_IN3
VI6
C
VBS0
BLUE-
F_A
11
DV18A
VI13
VI1
8
AL
VI2
LVDS_GND
PLLVDD2
F_D3
F_A
19
A_BA1
ADCVDD
F_D6
DACFS
AP0
SDV25A
AOMCLK
GND
A_DQ20
GPIO12
GPIO8
VPLLVDD2
AP[0..3]
VFE_
G
N
D
1
DV25A
A_RA7
DV33A
Y0-
PWM1
GP
IO8
F_D0
AVIC
M
DE
LV
DS
_GND
A_DQ16
LVDDC
LVDS_GND
A
O
LRCK
PB0-
IOWR_1
AO
SD
ATA0
A_DQ17
GND
G
R
EEN
-
GP
IO
11
ERO3_GPIO
ICE
A_
D
Q
1
1
DV18A
ADC_IN1
GPIO18
AVDD_VAD1
SO
Y0
DV
18A
GP
IO9
LVDDB
A_
D
Q
4
F_A13
A_CLK
ADCVDD
DV
33A
BL
U
E+
UP3_1
GND
VI12
ADIN
IOSCL
A_DQ26
DV18A
GP
IO2
GREEN-
A
A
DCV
DD
RE
F
N
A_
D
Q
1
2
VI8
RE
D-
A_RA6
A_DQ15
REFP
VFE_
G
N
D
MPX2
AD
IN
27MHZ
AVDD_VFE1
BL
U
E-
SDV25A
PR
0
-
C
VBS1
TXD UTXD
GND
SC
0
A_DQM[0..1]
A_RA2
GND
VI4
PWM2VREF
SCL1
A_DQ22
PLLVDD2
A_RAS_1
UP3_1
DV25A
PLLVDD3
A_CKE
AP2
IO
A5
F_A15
SDV25A
GP
IO7
IOSDA
A_CLK
A_DQ27
A_DQ23
GPIO13
GPIO9
VFE_
G
N
D
DACVDDC
F_A
12
S
B
33A
RE
D+
URS
T
_
1
A_DQ18
F_D7
F_A16
A_
D
Q
3
HDMISD0
A_DQM1
27MHZ
A_DQS2
PWM1
IN
T0_1
A_DQ25
F_D2
GND
ADC_IN0
DV25A
A_RA11
A_
D
Q
5
AO
SD
ATA2
TESTP4
SB18A
SC
L
0
A_DQS3
LVDS_GND
RXD1
AOBCLK
ADC_IN1
CLK1-
IO
A4
SD
A1
IO
W
R
_
1
HDMILRCK
DCLK
A_
D
Q
S0
A_RA0
HDM
IS
D0
AOSDATA2
A_CLK_1
ADC_IN2
AVD
D
_
VAD
1
AN1
REFN
RXD1
VG
AH
SYN
C
_
1
AD
AC
VD
D
PR
0
+
IOA0
GND
HDMIHSYNC
ADACVDD
DE
A_
D
Q
8
VG
AVSYN
C
_
1
GND
LVDS_GND
MPX1
VFE_
G
N
D
1
IOCE_1
LVDS_GND
VI1
HDMICEN
DACFS
SDA1
A_
D
Q
1
A_CLK_1
F_A
20
G
R
EEN
+
IO
SC
L
CLK1-
AN[0..3]
IC
E
HDM
IL
RCK
A_DQ21
VI3
RE
F
P
XTALI
A_DQS[0..3]
LVDS_GND
GPIO14
AOSDATA3
GP
IO
13
GND
PLLVDD1
AOSDATA1
AVD
D
_
VAD
0
VPLLVDD1
GP
IO6
DV
33A
GND
UT
X
D
HDMISD1
DE
HDM
IS
D1
LVDS_GND
ADC_IN4
HDMIBCLK
XTALO
GND
GPIO15
PLLVDD3
IOA[0..7]
SB18A
CLK1+
RXD
GPIO3
GPIO2
GND
VFE_
G
N
D
1
DACVREF
TESTN4
LVDDA
DV25A
GP
IO4
LVDS_GND
A_
D
Q
6
DV
18A
A_CAS_1
F_OE_1
AN3
F_A
21
AN2
GND
UP
3_4
A_WE_1
XTALVDD
LVDS_GND
PWM0
A_CAS_1
UP3_0
AOLRCK
RED-
VGASOG
A_DQ[0..31]
A_
D
Q
9
GND
A_RA1
GND
GND
HDMIVSYNC
VFE_
G
N
D
1
HDM
IM
CLK
VG
ASO
G
CVBS1
IOCE_1
VI15
VFE_GND
GP
IO
16
SC
L
1
SC0
TESTP2
GND
GP
IO
18
AR
F_A
18
A_BA0
A
UDI
O_GND
A_RA10
TXD1
A_CKE
F_D4
DV
25A
A_DQ30
GPIO10
HDMIMCLK
A_CS_1
IO
A6
LVDDA
VI11
IRRCV
R1
A_CS_1
UP3_5
VI5
VI1
7
VFE_
G
N
D
1
PR0-
AOSDATA0
VI[0..23]
GND
TESTP4
GND
HDMIVSYNC
AADCVSS
BLUE+
F_A[8..21]
LVDS_GND
HDMISD2
PB0
+
GND
GND
LVDS_GND
INT0_1
UP3_4
DV
18A
GND
VFE_
G
N
D
AVDD_VAD0
VGAVSYNC_1
VI2
2
F_OE_1
TXD
AVDD_VFE0
GREEN+
GP
IO
14
F_A17
AO
MC
L
K
GPIO4
URST_1
A_RA[0..11]
GP
IO
17
VI16
A_RA5
AADCVDD
Y0+
RXD1 GPIO6
RXD URXD
AO
SD
ATA4
FD
AT
FC
LK
FC
MD
ERO3_GPIO
AOSDATA5
AC
EN
T
VIDEO_OUT
VIDEO_OUT
CCI
R_GP
IO
_D
CCIR_GPIO_D
TESTN
3
SDA0
SCL0
XTALI XTALO
LVDS_GND
A
UD_CT
RL
AUD_CTRL
TESTN3 5
HDMIVSYNC 10,11
HDMIHSYNC 10,11
IOSDA 7
F_A[8..21] 4
VPLLVDD2 5
BLUE+ 19
HDMIBCLK 10,11
GPIO10 24
A_CKE 4
AOSDATA0
AL 22
VGAVSYNC_1 19
TESTP3 5
CVBS1 8
GPIO15 24
HDMISD3 10
RXD1 11
VPLLVDD1 5
SDA1 11
HDMIMCLK 10,11
GPIO9 20
AR 22
VGAHSYNC_1 19
A_RA[0..11] 4
TESTN4 5
CLK1- 25
F_OE_1 4
HDMISD2 10
RED- 19
AOLRCK 21,22
SOY0 8
GPIO8 23
MPX1 8
TESTP4 5
LVDDB 5
HDMISD1 10
URST_1 26
PLLVDD2 5
GREEN- 19
A_BA[0..1] 4
PR0+ 8
GPIO7 20
Y0- 8
MPX2 8
F_D[0..7] 4
27MHZ 10
LVDDC 5
AUDIO_GND 5,8,19,22
GPIO14 24
ADIN 21
AVDD_VAD0 5
GPIO4 26
PR0- 8
GPIO3 11
A_CLK_1 4
VI[0..23] 10,11
SDV25A 4
ADC_IN0
TXD 26
VGASOG 19
A_WE_1 4
PLLVDD1 5
Y0+ 8
GPIO2 25
DACFS 5
PWM2VREF 5
DV25A 4
AOMCLK 21,22
ADC_IN3
LVDS_GND 2,5,25
AOSDATA2
XTALVDD 5
ADCVDD 5
UP3_5 1
A_DQM[0..1] 4
PB0+ 8
AVICM 5
RXD 26
GPIO18 10
RED+ 19
A_CLK 4
ADC_IN2
VFE_GND 2,5,8,19
CLK1+ 25
ADACVDD 5
GPIO13 24
PB0- 8
SC0 8
IRRCVR1 24
AOSDATA3
GPIO17 10
INT0_1 10
ADC_IN4
GPIO12 24
A_RAS_1 4
AVDD_VFE0 5
AOBCLK 21,22
IOWR_1 4
REFN 5
BLUE- 19
A_DQS[0..3] 4
ADC_IN1
AN[0..3] 25
AVDD_VFE1 5
AADCVDD 5
LVDDA 5
VREF 4
A_CAS_1 4
REFP 5
UP3_4 1
IOA[0..7] 4
HDMICEN 10
PWM1 1
A_DQ[0..31] 4
HDMIDE 10,11
AVDD_VAD1 5
IOSCL 7
IOCE_1 4
HDMISD0 10,11
GREEN+ 19
VFE_GND1 2,5,8,19
UP3_1 24
AOSDATA1 22
PWM0 1
GPIO16 24
AP[0..3] 25
HDMIODCK 10,11
CVBS0 8
PLLVDD3 5
TXD1 11
HDMILRCK 10,11
GPIO11 24
SCL1 11
AADCVSS 5,8,19,22
UP3_0 24
A_CS_1 4
SY0 8
ERO3_GPIO 21
AOSDATA5 22
VIDEO_OUT 22
CCIR_GPIO_D 10
SDA0 11
SCL0 11
AUD_CTRL 11
SB33B
SB18A
DV33A
SB33B
SB33B
DV18A
SB33B
SB33A
TP14
TP34
TP07
TP38
TP11
TP20
R118
10K
TP31
TP16
R114
820K
TP36
TP28
TP08
R116
(NC)10K
TP09
X100
27MHz
TP17
R119
10K
TP18
TP01
TP27
TP13
TP03
C136
33P
TP02
TP33
TP19
R117
1K
TP15
TP10
MT8202
SOCKET
I106
MT8202
BGA388/SOCKET
C9
U4 M3 M4 M1 K1
B6
A6
C6
D6
C3
C2
C4
C10
D12
B16
A10
C8
D5
A14
R13
AF10
AC11
AD11
AC12
AE11
AF11
AF12
AE10
AC7
K2 D3 L1 L2 L3 L4 N1 N4 M11 P1 P2 P3 P4 N12 R1 R4 R2 T1 T4 U1 U2 U3 V1 V3 V2 V4 W3 W4 Y1 Y2
L12
F3 M12 F2
D2
H2 H3 H4 G1
K3
G3
C1
B5
B3
E4
G2 H1
A5
A4
D1
A3
A2
B2
G4
B4
AA1
D18
A18
D20
A21
AE13
C18
T26
C20
B20
A23
C11 AC16
AC15
AD16
AC14
AD15
AF16
T14
AE15
AD14
AE14
J1
A8
A9
B13
D16
C16
A17
C17
C12
A13
A15
D9
B9
D13
A22
A20
C19
D19
R14
AF14
AF13
AD13
T13
D7
K4
B8
B22
AD17
AC17
AF17
AC13
AE17
AE12
AC
1
AC
4
AD
5
AE1 AF1 AA2
AE5
AF4
AE4
AF3 R12 AE3 AF2
T25
AD
3
P1
2
AC8
AF7
AF6
R11
AF5
AB3 AB2 AB1
AE8
AD8
AA4
AF9
AF8
AD9
T11
N11
AD7
AC18
C21
B21
A19
D21
B19
B18
B14
B12
B17
A12
D10
D11
D14
D15
B15
AC
2
F1
L11
C14
B10
B11
D17
C15
F4
B1
J2
AD12
AC9
AE16
AF15
AD10
AE9
AC10
AE2 AD
1
AC
5
W1 Y3 R3 T2 D4
C7
E3
T12
AB4
A16
A11
AC6
AE7
AE6
M2
B7
E1 N3 AD
2
AC
3
P1
1
Y4 T3
AD6
W2
AD4
AD18
AE18
AF18
AF19
AD19
AC19
AF20
AE20
AD20
AD21
AF21
AE19
AE21
AF22
AC21
AC22
AE22
AD22
R15
AF23
T15
AE23
AD23
AF24
AE24
AD24
AF25
AF2
6
AE2
5
AE2
6
AC
2
0
AD
2
5
AC
2
3
AD
2
6
AC
2
5
AC
2
6
AB2
6
AB2
5
AC
2
4
AA2
5
AA2
6
AA2
3
AA2
4
AB2
4
T16 W23 Y2
6
Y2
5
Y2
4
Y2
3
R16 W26 W25 W24 V2
4
V2
3
U23 U24 V2
6
V2
5
N24 U25 U26 T24 R25 R26 R23 R24 P2
3
M24 P2
4
P2
5
P2
6
N25 N26 M25 M26 L24 L25 L26 K2
5
K2
6
J2
5
J2
6
L23 G26 G25 F26 F25 H23 G23 G24 D25 D26 J2
3
E2
6
E2
5
F24 F23 E2
4
B2
6
C26 D24 C25 B2
5
C24 B2
4
A2
4
A2
6
A2
5
D23 C23 D22
C22
C13
A7
B2
3
D8
AB2
3
P13
N16
N15
N14
N13
M16
P16
P15
P14
A1
C5
J3
J4
E2
3
H24 H25 H26 K2
3
M23 N23
AA3
M15 L16 L13 E2 M13 L14 L15 M14
J24
K24
T23
N2
A5P/EBO1
DV
DD18
RX
D
TXD AO
MC
L
K
WR#
VSYNCO
HSYNCO
DE/GPIO
VCLK/GPIO
A17
IOA0
AD7
A6P/EBO3
A7N/EBO6
VREF
A2P/EGO1
A4P/EGO7
DVDD33A
LVSSC
DVSS25
RA8
RA7
RA6
DQ16
RA5
RA4
DQ19
RA9
DVDD25_CLK
RD# IO
A3
IN
T
0
PR
ST#
UP
3_4
IR AO
BC
K
LI
N
D
VSS1
8
AO
SD
ATA0
/G
PIO
AO
SD
ATA1
/G
PIO
AO
SD
ATA2
/G
PIO
AO
SD
ATA3
/G
PIO
D
VSS3
3
G
PIO
0
/AO
SD
ATA4
GP
IO3
G
PIO
1
/AO
SD
ATA5
F
C
IC
L
K
/G
PIO
GP
IO4
GP
IO
5/
TX
D
GP
IO
6/
RX
D
DV
DD18
GP
IO7
GP
IO9
GP
IO8
GP
IO
10
GP
IO
13
GP
IO
14
GP
IO
15
GP
IO
16
DVSS18
HI
GHA
1
D
VSS1
8
IO
A2
0
A16
IO
A6
IO
A5
DV
DD33A
IO
A4
DVDD18A
IO
A1
8
IOA1
IOOE#
AD3
HIGHA6
HI
GHA
0
IO
A7
IOCS#
AD0
HIGHA7
AD2
AD4
AD5
IO
A1
9
AD1
SD
A
ADCVDD
B
ADIN4/GPIO
XTALI
DQ22
PWM2VREF
GN
ADIN3/GPIO
ADIN2/GPIO
PLLVSS3
CK2P/EBO5 DQ29
DVDD25OPT
DQ28
DVDD25OPT
DVDD25OPT
DQ26
DVSS25
DQ25
DQ24
DQM1
IO
AL
E
A0P/ERO5
A1P/ERO7
LVDDC
DACVDDB
DACVDDA
G
DACVSSB
A7P/EBO7
VPLLVDD2
TP4
A5N/EBO0
A1N/ERO6
LVDDA
XTALVDD
XTALO
ADIN1/GPIO
DACVSSA
DVSS18
DQS2
DQ23
DQ21
DVSS25
ERO3/GPIO
DVDD18A
A0N/ERO4
PLLVSS2
GPIO/PWM0
DVDD33I
DQ30
DQ20
DQ31
DQ18
DQ4 DQ7 DV
DD25
DQS
1
DQ8 SC
L
RWE#
DQ15
DQ14
DQ12 D
VSS1
8
DQ11 DQ10
GP
RV
RE
F
D
VSS1
8
DVDD18
RA10
RCS#
DVSS25
CAS#
DQ2 DQ1 DQ0
RA1
RA0
DV
DD33
RCLKB
RA2
RA3
DVSS25
D
VSS2
5
BA0
GPIO/PWM1
PLLVDD2
PLLVDD3
XTALVSS
ADCVSS
ADIN0/GPIO
SVM
LVSSB
A3N/EGO4
R
A3P/EGO5
A6N/EBO2
CK2N/EBO4
VPLLVSS
VPLLVDD1
TN4
DQ5 IO
A2
1
DVSS33
LVSSA
A2N/EGO0
CK1N/EGO2
DACVSSC
DACVDDC
HI
GHA
2
AD6
IO
W
R
#
DQ17
DVDD18
DQ27
DQS3
RA11
RCLK
CKE
DQ9 DQS
0
DV
DD25
GP
IO
11
GP
IO
17
GP
IO2
F
C
IC
MD
/G
PIO
IO
A2
ERO2/UP3_5
HIGHA5
DVSS18
DQ3
FS
CK1P/EGO3
DVDD25
BA1
RAS#
IC
E
ERO1/UP3_1
HI
GHA
3
A
O
LRCK
DQM
0
DQ6 D
VSS2
5
GP
IO
18
F
C
ID
AT
/G
PIO
DVDD25
GP
IO
12
DQ13
OUT_27MHZ/GPIO
DE_SOG/GPIO
CEN_DVI/GPIO
VSYNC_DVI
HSYNC_DVI
DE_DVI
VI0
VI1
VI2
VI5
VI3
VCLK_DVI
VI4
VI7
VI6
DVDD18
VI8
VI9
DVSS33I
VI10
DVSS18
VI11
VI12
VI13
VI14
VI15
VI16
VI1
7
VI1
8
VI1
9
DV
DD33
VI2
0
DV
DD18
VI2
1
VI2
2
VI2
3
HDM
IM
CLK
/GP
IO
HDM
IB
CLK
/GP
IO
HDM
IL
RCK
/G
P
IO
HDM
IS
D0/
GP
IO
HDM
IS
D1/
GP
IO
HDM
IS
D2/
GP
IO
HDM
IS
D3/
GP
IO
SC
L
1
D
VSS3
3
CCI
R_V
CLK
/GP
IO
CCI
R_V
0/
GP
IO
CCI
R_V
1/
GP
IO
CCI
R_V
2/
GP
IO
CCI
R_V
3/
GP
IO
D
VSS1
8
CCI
R_V
4/
GP
IO
CCI
R_V
5/
GP
IO
CCI
R_V
6/
GP
IO
CCI
R_V
7/
GP
IO
SD
A0
SC
L
0
FA
S
T
_B
LA
NK
H
SYN
C
VSYN
C
AVSS_
VFE1
BP BN
SO
G
RP
RN
AVD
D
_
VFE1
TN
1
TP1
AVSS_
VAD
1
SO
Y0
Y0
P
Y0
N
PB0
P
PB0
N
PR
0
P
PR
0
N
SO
Y1
Y1
P
Y1
N
PB1
P
PB1
N
PR
1
P
PR
1
N
AVD
D
_
VAD
1
SC
1
SY1 SC
0
SY0
AVSS_
VFE0
AVSS_
VAD
0
RE
F
N
C
VBS1
C
VBS0
AVD
D
_
VFE0
C
VBS3
C
VBS2
RE
F
P
AVD
D
_
VAD
0
A
A
DCV
DD SIF
AF
AAD
C
VSS
TN
2
TP2
AD
AC
VD
D
AC
EN
T/AO
SD
AT2
AVIC
M
AR
/AO
SD
AT1
AL
/AO
SD
AT0
AD
AC
VSS
TP3 TN
3
PLLVDD1
LVDDB
ERO0/UP3_0
PL
L
VSS1
A4N/EGO6
SD
A1
DGND/BALL
DGND/BALL
DGND/BALL
DGND/BALL
DGND/BALL
DGND/BALL
DGND/BALL
DGND/BALL
DGND/BALL
NC BALL
NC BALL
NC BALL
NC BALL
AAD
C
VSS
VFE_
G
N
D
1
VFE_
G
N
D
1
VFE_
G
N
D
1
VFE_
G
N
D
1
VFE_
G
N
D
VFE_
G
N
D
NC BALL
DGND/
B
A
L
L
DGND/
B
A
L
L
DGND/
B
A
L
L
HI
GHA
4
DGND/
B
A
L
L
DGND/
B
A
L
L
DGND/
B
A
L
L
DGND/
B
A
L
L
NC BALL
NC BALL
NC BALL
NC BALL
TP29
TP22
C135
33P
TP04
TP30
TP25
TP12
TP21
TP05
TP26
TP24
TP32
TP23
TP06
TP37
R115
10K
TP35
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