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6-7
A
Main Board Circuit Diagram:MT8551/60-FLASH/USB
3.3V
3.3V
U1E
U1E
F21
DVCC33_IO
AVDD33_USB
AB4
DVCC33_IO
C114
C114
C116
C116
AC5
DVCC33_IO
K8
DVCC33_IO
L8
0.1uF/16V/Y5V
0.1uF/16V/Y5V
0.1uF/16V/Y5V
0.1uF/16V/Y5V
DVCC33_IO
AVSS33_USB
J11
DVCC33_IO
G20
DVCC33_IO
J9
DVCC33_IO
1
NFALE
AC6
NFALE
NFCEN
AD4
NFCEN
USB_DP_P0
NFCLE
AD5
NFCLE
USB_DM_P0
NFRBN
AD3
NFRBN
NFREN
AE4
NFREN
USB_DP_P1
NFWEN
AD6
NFWEN
USB_DM_P1
AE5
NFCEN2_R
TP35
TP35
NFCEN2
NFRBN2_R
AE3
TP36
TP36
NFRBN2
USB_DP_P2
NFD0
AC3
NFD0
USB_DM_P2
NFD1
AE2
NFD1
NFD2
AD2
NFD2
AE1
NFD3
NFD3
NFD4
AC2
NFD4
USB_VRT
NFD5
AD1
NFD5
NFD6
AB3
NFD6
NFD7
AC1
NFD7
3.3V
GPIO2
C22
TP37
TP37
GPIO2
GPIO3
AA5
GPIO3
AVDD12_REC
GPIO4
AA4
GPIO4
AB1
GPIO5
GPIO5
GPIO6
AB2
GPIO6
GPIO7
Y6
GPIO7
AVSS12_REC
SCL
AA1
SCL
AVDD33_COM
SDA
AA2
SDA
W7
EFPWRQ
AVSS33_PLL
G25
VOUTD0
AVDD33_LD
G24
VOUTD1
F25
VOUTD2
G23
AVSS33_LD
2
E24
VOUTD7
TXVN_0
AOMCLK
C25
10
AOMCLK
VOUTD8
TXVP_0
D24
AOBCK
10
AOBCK
VOUTD9
AOLRCK
B25
10
AOLRCK
VOUTD10
MICDATA
C24
10
MICDATA
VOUTD11
TXVN_1
A25
VOUTD12
TXVP_1
B24
VOUTD13
A24
VOUTD14
E23
VOUTD15
H22
VOUTHSYNC
G21
VOUTVSYNC
F22
VOUTCLK
MT8551
MT8551
U12
U12
16P/SMD/H1245
16P/SMD/H1245
TXVN_1
8
9
TX+
TXP
7
10
CTT
TCT
6
11
TXVP_1
TX-
TXN
5
12
NC
NC
4
13
NC
NC
TXVN_0
3
14
RX+
RXP
2
15
CTR
RCT
1
16
TXVP_0
RX-
RXN
C936
C936
C937
C937
0.1uF/16V/Y5V
0.1uF/16V/Y5V
0.1uF/16V/Y5V
0.1uF/16V/Y5V
3
R557
R557
R558
R558
R559
R559
75/1%
75/1%
75/1%
75/1%
75/1%
75/1%
R561
R561
75/1%
75/1%
To WIFI
3.3V
R969
R969
NC/0
NC/0
Q213
Q213
NC/PNP_PBSS5320T
NC/PNP_PBSS5320T
FB21
FB21
NC/10/2A
NC/10/2A
R971
R971
R970
R970
NC/180
NC/180
NC/180
NC/180
GPIO7
R967
R967
NC/4.7K
NC/4.7K
Q211
Q211
NC/NPN_3DG3904M
NC/NPN_3DG3904M
4
A
B
3.3V
AA3
AVDD33_USB
3.3V
7
AMUTE
W4
NFCEN
NFWEN
NFALE
NFCLE
NFREN
W1
USBP0
W2
USBM0
Y1
USBP1
USBP1
Y2
USBM1
USBM1
V1
USBP2
V2
USBM2
U3
USB_VRT
R69
R69
5.1K/1%
5.1K/1%
G11
AVDD12_REC
1.2V
F11
F9
AVDD33_COM
3.3V
E9
G9
AVDD33_LD
3.3V
F13
USB switch
A5
TXVN_0
B5
TXVP_0
A6
TXVN_1
B6
TXVP_1
B7
REXT
R70
R70
24K/1%
24K/1%
REXT
RJ45
P1
P1
RJ45 JACK
RJ45 JACK
8
9
N/C
GND
7
10
C934 0.1uF/16V/Y5V
C934 0.1uF/16V/Y5V
N/C
GND
6
RX-
5
N/C
C935 0.1uF/16V/Y5V
C935 0.1uF/16V/Y5V
4
N/C
3
LAN_GND
RX+
2
TX-
1
TX+
R560
R560
75/1%
75/1%
W_VCC
W_VCC
USBP0
USBP0
USBM0
USBM0
GND3
GND3
4
4
USBP0
3
3
USBM0
2
2
wifi_VCC
1
1
C373
C373
USB401
USB401
NC/0.1uF
NC/0.1uF
NC/4PIN/2.0mm
NC/4PIN/2.0mm
B
C
R55
R55
R56
R56
R57
R57
R58
R58
R59
R59
R60
R60
10K
10K
NC/10K
NC/10K
NC/10K
NC/10K
NC/10K
NC/10K
NC/10K
NC/10K
NC/10K
NC/10K
R62
R62
R63
R63
R64
R64
R65
R65
R66
R66
R67
R67
NC/10K
NC/10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
AMUTE: ICE mode Enable
[Nfcen , Nfwen]= [1, 0]test_cpum ,
[0, 0] normal mode, [1, 1] scan
mode
[Nfale, Nfcle]= [1, 0] OLT mode, [0,
1] ABIST mode, [0, 0] NAND from NDND
pin, [1, 1] NAND from digital video
output pin
NFREN: mmc boot mode
VCC
Q212
Q212
NC/PNP_PBSS5320T
NC/PNP_PBSS5320T
USB_VCC3
VCC_D
R968
R968
R966
R966
R965
R965
NC/180
NC/180
NC/4.7K
NC/4.7K
NC/180
NC/180
R972
R972
NC/4.7K
NC/4.7K
PCOHD
Q10
Q10
NC/3DG3904M
NC/3DG3904M
USB_EN2
Rear USB Power Switch Enable
USB_OC2# Rear USB Over Current Detect
VCC_D
VCC
USB_EN1
Front USB Power Switch Enable
USB_OC1# Front USB Over Current Detect
GPIO6
PCOHD
GPIO4
USB_OC2#
GPIO3
USB_EN2
GPIO6
USB_OC1#
GPIO5
USB_EN1
VCC
U11
U11
G556B1-P1U
G556B1-P1U
7
USB_EN1
1
C113
C113
USB_OC1#
2
USB_OC2#
3
4
0.1uF/16V/Y5V
0.1uF/16V/Y5V
USB_EN2
C
6-7
D
3.3V
U8
U8
48
1
R61
R61
NC
NC
47
2
4.7K
4.7K
NC
NC
46
3
NC
NC
45
4
NC
NC
NFD7
44
5
I/O7
NC
NFD6
43
6
I/O6
SE
NFD5
42
7
NFRBN
I/O5
R/B
NFD4
41
8
NFREN
I/O4
RE
40
9
NFCEN
NC
CE
39
10
NC
NC
38
11
3.3V
3.3V
NC
NC
37
12
VCC
VCC
C105
C105
36
13
VSS
VSS
C106
C106
35
14
0.1uF/16V/Y5V
0.1uF/16V/Y5V
NC
NC
0.1uF/16V/Y5V
0.1uF/16V/Y5V
34
15
NC
NC
33
16
NFCLE
NC
CLE
NFD3
32
17
NFALE
I/O3
ALE
31
18
NFD2
NFWEN
I/O2
WE
NFD1
30
19
NFWP#
R68
R68
10K
10K
I/O1
WP
3.3V
NFD0
29
20
I/O0
NC
28
21
NC
NC
27
22
NC
NC
26
23
NC
NC
25
24
NC
NC
NAND_1Gb_NAND Flash
NAND_1Gb_NAND Flash
NAND Flash
R1016
R1016
NC/1
NC/1
R1015
R1015
NC/1
NC/1
R1006
R1006
NC/1
NC/1
USB_VCC3
USB_VCC1
USB_VCC1
R1007
R1007
NC/1
NC/1
VCC_D
R1004
R1004
R1002
R1002
NC/4.7K
NC/4.7K
PCOHD
NC/4.7K
NC/4.7K
R1003
R1003
NC/100
NC/100
Q12
Q12
NC/3DG3904M
NC/3DG3904M
R1005
R1005
Q9
Q9
C318
C318
NC/3DG3904M
NC/3DG3904M
NC/820R
NC/820R
NC/4.7uF
NC/4.7uF
VCC
R/R to Q3.b
5.000V
0.772V
4.532V
0.700V
3.885V
0.600V
3.237V
0.500V
To Rear USB
4
GND
USBP2
3
D+
2
USBM2
D-
HDMI_VCC
USB_VCC0
1
IN
VCC
8
USB_VCC1
EN1
OUT1
5
USB_VCC0
R190
R190
0
0
/OC1
OUT2
6
/OC2
GND
C112
C112
EN2
0.1uF/16V/Y5V
0.1uF/16V/Y5V
D
E
1
2
3
P2
P2
NC/USB-A/WT
NC/USB-A/WT
4
E
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