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6-6
A
Main Board Circuit Diagram:MT8551/60-Flash
3.3V
U1E
U1E
F21
DVCC33_IO
AVDD33_USB
AB4
DVCC33_IO
AC5
DVCC33_IO
K8
DVCC33_IO
L8
DVCC33_IO
AVSS33_USB
J11
DVCC33_IO
G20
DVCC33_IO
J9
DVCC33_IO
NFALE
AC6
1
NFALE
AD4
NFCEN
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
GPIO2
C22
GPIO2
GPIO3
AA5
GPIO3
AVDD12_REC
GPIO4
AA4
GPIO4
GPIO5
AB1
GPIO5
GPIO6
AB2
GPIO6
Y6
GPIO7
GPIO7
AVSS12_REC
SCL
AA1
SCL
AVDD33_COM
SDA
AA2
SDA
W7
EFPWRQ
AVSS33_PLL
VOUTD0
G25
TP37
TP37
VOUTD0
AVDD33_LD
VOUTD1
G24
TP38
TP38
VOUTD1
VOUTD2
F25
TP39
TP39
VOUTD2
VOUTD3
G23
9
VOUTD3
VOUTD3
VOUTD4
E25
9
VOUTD4
VOUTD4
AVSS33_LD
VOUTD5
F24
9
VOUTD5
VOUTD5
2
VOUTD6
D25
9
VOUTD6
VOUTD6
VOUTD7
E24
TP41
TP41
VOUTD7
TXVN_0
VOUTD8
C25
TP43
TP43
VOUTD8
TXVP_0
VOUTD9
D24
TP45
TP45
VOUTD9
VOUTD10
B25
TP47
TP47
VOUTD10
VOUTD11
C24
TP49
TP49
VOUTD11
TXVN_1
VOUTD12
A25
TP51
TP51
VOUTD12
TXVP_1
VOUTD13
B24
TP52
TP52
VOUTD13
VOUTD14
A24
TP53
TP53
VOUTD14
VOUTD15
E23
TP54
TP54
VOUTD15
H22
VOUTHSYNC
TP55
TP55
VOUTHSYNC
VOUTVSYNC
G21
TP56
TP56
VOUTVSYNC
VOUTCLK
F22
TP57
TP57
VOUTCLK
MT8551
MT8551
3.3V
R71
R71
R72
R72
4.7K
4.7K
4.7K
4.7K
SCL
SDA
3.3V
3.3V
3
C114
C114
C115
C115
C116
C116
C117
C117
C118
C118
0.1uF/16V/Y5V
0.1uF/16V/Y5V
NC/0.1uF/16V/Y5V
NC/0.1uF/16V/Y5V
0.1uF/16V/Y5V
0.1uF/16V/Y5V
0.1uF/16V/Y5V
0.1uF/16V/Y5V
10uF/10V/Y5V
10uF/10V/Y5V
4
A
B
3.3V
AA3
AVDD33_USB
3.3V
C103
C103
C104
C104
7
AMUTE
W4
1uF/16V/Y5V
1uF/16V/Y5V
10uF/10V/Y5V
10uF/10V/Y5V
NFCEN
NFWEN
NFALE
NFCLE
NFREN
W1
USBP0
USBP0
USBP0
W2
USBM0
USBM0
USBM0
Y1
USBP1
USBP1
9
Y2
USBM1
USBM1
9
V1
USBP2
V2
USBM2
U3
USB_VRT
R69
R69
5.1K/1%
5.1K/1%
G11
AVDD12_REC
1.2V
C107
C107
C108
C108
F11
0.1uF/16V/Y5V
0.1uF/16V/Y5V
0.1uF/16V/Y5V
0.1uF/16V/Y5V
F9
AVDD33_COM
3.3V
C109
C109
C110
C110
0.1uF/16V/Y5V
0.1uF/16V/Y5V
1uF/16V/Y5V
1uF/16V/Y5V
E9
G9
AVDD33_LD
3.3V
C111
C111
F13
0.1uF/16V/Y5V
0.1uF/16V/Y5V
A5
TXVN_0
B5
TXVP_0
GPIO5
TP46
TP46
GPIO6
TP48
TP48
A6
TXVN_1
B6
TXVP_1
B7
REXT
R70
R70
24K/1%
24K/1%
REXT
GPIO2
USB_OC2#
GPIO3
USB_EN2
GPIO7
USB_OC0#
GPIO4
USB_EN0
U12
U12
16P/SMD/H1245
16P/SMD/H1245
TXVN_1
8
TX+
7
CTT
TXVP_1
6
TX-
5
NC
4
NC
TXVN_0
3
RX+
2
CTR
TXVP_0
1
RX-
C936
C936
C937
C937
0.1uF/16V/Y5V
0.1uF/16V/Y5V
0.1uF/16V/Y5V
0.1uF/16V/Y5V
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_D
VCC
USB_EN2
USB_OC2#
C113
C113
USB_OC0#
USB_EN0
0.1uF/16V/Y5V
0.1uF/16V/Y5V
To Rear USB
RJ45
P1
P1
RJ45 JACK
RJ45 JACK
9
8
9
TXP
N/C
GND
10
TCT
11
7
10
C934 0.1uF/16V/Y5V
C934 0.1uF/16V/Y5V
TXN
N/C
GND
12
NC
13
6
NC
RX-
14
RXP
15
5
RCT
N/C
16
C935 0.1uF/16V/Y5V
C935 0.1uF/16V/Y5V
RXN
4
N/C
3
RX+
2
TX-
1
TX+
LAN_GND
R557
R557
R558
R558
R559
R559
R560
R560
75/1%
75/1%
75/1%
75/1%
75/1%
75/1%
75/1%
75/1%
R561
R561
75/1%
75/1%
(CONNECT TO CHASSIS GND)
C
6-6
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
36
13
C105
C105
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
VCC
HDMI_VCC
HDMI_VCC
U11
U11
G556B1-P1U
G556B1-P1U
7
IN
1
8
USB_VCC1
EN1
OUT1
2
5
USB_VCC0
R190
R190
NC/0
NC/0
HDMI_VCC
/OC1
OUT2
3
6
/OC2
GND
4
EN2
USB_VCC1
P2
P2
4
NC/USB-A/WT
NC/USB-A/WT
GND
3
USBP2
D+
USBM2
2
D-
USB_VCC0
1
VCC
C942
C942
C112
C112
NC/10uF/10V/Y5V
NC/10uF/10V/Y5V
NC/0.1uF/16V/Y5V
NC/0.1uF/16V/Y5V
D
E
1
7
2
USB_VCC1
9
3
4
E
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