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6-10
A
Main Board Circuit Diagram: MT8550 STBY MCU
U100E
3.3V
3.3V
G12
DVCC33_IO_6
M7
DVCC33_IO
VDD3.3_USB
R449
0
P7
Y3
DVCC33_IO
AVDD33_USB_1P
Y7
AA3
DVCC33_IO_2
AVDD33_USB_2P
E20
DVCC33_IO_3
F19
C401
C402
DVCC33_IO_3
0.01uF/25V
10uF/10V
N7
DVCC33_IO
Y4
AVSS33_USB_1P
1
TP416
S FCS
A20
AA4
SFCS
AVSS33_USB_2P
TP417
S FCK
C20
SFCK
TP415
SF DI
1.2V
B20
SFDI
TP402
SFDO
D20
SFDO
V5
VDD1.2_USB
R450
0
AVDD12_USB_1P
W4
AVDD12_USB_2P
NFALE
D21
NFALE
N FCEN
C404
C405
C22
NFCEN
0.01uF/25V
10uF/10V
NFCLE
B22
NFCLE
N FRBN
B23
W5
NFRBN
AVSS12_USB_1P
N FREN
A23
W6
NFREN
AVSS12_USB_2P
NFW EN
C21
NFWEN
NFC EN2
A22
NFCEN2
NFR BN2
A24
NFRBN2
N FD0
USBP0
C23
AB2
NFD0
USB_DP0
N FD1
A25
AB1
USBM0
NFD1
USB_DM0
N FD2
B24
NFD2
N FD3
B25
AA2
USBP1
NFD3
USB_DP1
N FD4
USBM1
C24
AA1
NFD4
USB_DM1
N FD5
C25
NFD5
N FD6
USBP2
D24
Y2
NFD6
USB_DP
N FD7
D25
Y1
USBM2
NFD7
USB_DM
GPIO0
D8
GPIO0
GPIO1
PAD_VRT
R415
5.1K/1%
A7
AB3
GPIO1
USB_VRT
GPIO2
B7
W3
PAD_VRT2
R414
5.1K/1%
GPIO2
USB_VRT_1P
GPIO3
C7
GPIO3
GPIO4
AC4
GPIO4
GPIO5
AVDD12_COM
AA5
E7
GPIO5
AVDD12_COM
GPIO6
AC3
F7
AVDD12_REC
GPIO6
AVDD12_REC
GPIO7
AB4
GPIO7
C429
C410
C428
C430
F9
AVSS12_COM
0.1uF/25V
1uF/16V
0.1uF/25V
1uF
F8
AVSS12_REC
SCL
D7
SCL
SDA
E8
SDA
C6
AVDD33_COM
AVDD33_COM
C5
AVDD33_LD
AVDD33_LD
TTDO
AVDD33_REC
AC1
D4
TDO
AVDD33_REC
TTRST#
AE1
TRST_
TTDI
AD2
TDI
C443
C411
C426
C432
TTMS
AD1
TMS
TTCK
0.1uF/25V
1uF/16V
0.1uF/25V
1uF/16V
AC2
TCK
D6
AVSS33_COM
D5
AVSS33_LD
E6
AVSS33_REC
AE2
EFPWRQ
TXVN_0
TP_TX-
B4
TXVN_0
A3
TXVP_0
TP_TX+
TXVP_0
R439
0
TXVN_1
TP_RX-
B5
TXVN_1
A4
TXVP_1
TP_RX+
TXVP_1
2
TANA_0
B6
TP403
TANA_0
A6
TANA_1
TANA_1
TP404
REXT
A5
R440
24K/1%
REXT
MT8550-DDR3-BGA492-090924
MT8550/BGA492/P0.8/B0.4/21X21
GPIO
IIC
GPIO7
USB_EN1#
3.3V
GPIO6
DAC_CS#
GPIO5
USB_OC1#
R429
R411
GPIO4
DAC_RST#
GPIO3
USB_OC2#
4.7K
4.7K
GPIO2
USB_OC0#
SCL
SCL
SDA
SDA
GPIO1
USB_EN0#
GPIO0
USB_EN2#
IC 3.3V POWER C
3.3V
3.3V
MAIN POWER
C434
C409
0.01uF/25V
10uF/10V
Default: R325=NC,R335=10K;
ICE: R325=10K,R335=NC;
TTRST#
C438
C440
TTDI
0.1uF/25V
F19/E20
Y7
0.1uF/25V
TTMS
TTCK
3
TTDO
C433
C436
C439
M7/N7/P7
0.1uF/25V
G12
0.1uF/25V
ICE/FE232/BC
0.1uF/25V
4
A
B
NAND
3.3V
FLASH
U400
48
1
NC
NC
47
2
NC
NC
46
3
NC
NC
45
4
NC
NC
N FD7
44
5
R416
0R/NC
I/O7
NC
N FD6
43
6
I/O6
SE
N FD5
42
7
N FRBN
I/O5
R/B
N FD4
N FREN
41
8
I/O4
RE
40
9
N FCEN
NC
CE
39
10
R418 0R/NC
NC
NC
38
11
C403
NC
NC
C406
3.3V
37
12
3.3V
VCC
VCC
0.1uF/25V
0.1uF/25V
36
13
VSS
VSS
35
14
NFC EN3
NC
NC
NFC EN4_R
34
15
NC
NC
33
16
NFCLE
NC
CLE
N FD3
NFALE
32
17
I/O3
ALE
N FD2
31
18
NFW EN
I/O2
WE
N FD1
30
19
NFWP#
I/O1
WP
N FD0
29
20
I/O0
NC
28
21
NC
NC
27
22
NC
NC
26
23
NC
NC
25
24
NC
NC
NAND08GW3B2C
TSOP48-787-0.5
1.2V
USBP0
R436
0
R434
0
USBM0
USB_VCC1
3.3V
R438
0
V CC
R435
0
R437
0
USBP0
USBM0
USB_VCC1
C427
C431
C372
0.1uF/25V
1uF/16V
0.1uF
V CC
U9
7
IN
CB401
USB_EN0#
USB_VCC1
1
5
/EN1
OUT1
USB_OC0#
2
8
USB_VCC2
/OC1
OUT2
0.1uF/16V
USB_OC1#
CE400
3
6
/OC2
GND
USB_EN1#
4
/EN2
+
G526
R432
R433
SO8
220uF/10V
10K
10K
USB differential impedance 90 OHM
MTK suggest W/S/GS=7.5/7.5/20
USB_VCC2
USBM1
USBM1
USBP1
USBP1
USB differential impedance 90 OHM
USB differential impedance 90 OHM
USB_EN2#
USB_EN2#
BACK USB
USB_OC2#
USB_OC2#
USB*2 reserved
No Libary
TDK ACM2012H-900-2P/0
U553
TP_RX-
2
3
8
RD-
L859
TP_RX+
1
4
6
RD+
5
RXCT
BE
TDK ACM2012H-900-2P/0
4
TDCT
ICE
TP_TX-
2
3
3
TD-
L860
TP_TX+
1
4
1
TD+
LFE8634
C936
C937
0.1uF/25V
0.1uF/25V
HA400
TTRST#
8
7
TTDI
TTMS
6
5
TTCK
4
3
TTDO
2
33VC
GDND
1
H8S/P1.0
B
C
HW TRAPPING
NFW EN
NFWEN
(7)
N FREN
N FREN
(7)
N FCEN
N FCEN
(7)
NFC EN2
NFCEN2
(7)
AMUTE
AMUTE
(5,7)
NFCLE
NFCLE
(7)
NFALE
NFALE
(7)
S FCS
SFCS
(7)
NFR BN2
CNT
NFC EN2
DAC_CS#
DAC_CS#
(9)
DAC_RST#
DAC_RST#
(9)
SCL
TP400
SCL
(9)
SDA
TP401
SDA
(9)
V CC
VCC
GND1
3.3V
4
3
R417
0
TANA_1
VCC
OUT
C442
0.1uF/6.3V
1
2
NC
GND
OSC1
25MHz
Front USB
4
4
3
3
2
2
1
1
USB400
4PIN/2.0mm
USB
C932
C933
CB402
22uF/10V
0.1uF/25V
0.1uF/16V
4
1:GND
USBP2
2:D+
3
1
USBM2
2
2
USB_VCC2
1
3
3:D-
4
4:VCC
USBM1
P503
USB TYPEA
USBP1
RJ45
P400
9
8
9
RX-
N/C
GND
C934
11
7
10
RX+
N/C
GND
0.1uF/25V
12
6
RXCT
RX-
13
5
TXCT
N/C
C935
0.1uF/25V
14
4
TX-
N/C
16
3
TX+
RX+
2
TX-
1
TX+
RJ8-45
R557
R558
R559
R560
75/1%
75/1%
75/1%
75/1%
C550
LAN_GND
R561
75/1%
100pF/2KV/NPO
1206-C
PART
CODE:400~499
(CONNECT TO CHASSIS GND)
C
6-10
D
ETH
OSC
SD CARD
Card_Detect
R563
1K
SD_Power_CTRL
S FCS
R564
0
AOSDATA5_R
S FCK
R565
0
AOSDATA5_R
SF DI
R566
0
NFR BN2
R567
0
NFC EN2
R568
0
SFDO
R569
0
WP_SW
R570
0
1
SD_D2
SD_D2
1
SD_D3
SD_D3
2
2
3
SD_CMD
SD_CMD
3
3.3V
3V31
4
4
5
SD_CLK
SD_CLK
SD_CMD
R571
5
SD_D0
R572
6
6
7
SD_D0
GN ND
SD_D1
R574
7
SD_D1
SD_D2
R575
8
8
9
AOSDATA5_R
SD_D3
R576
9
10
Card_Detect
Card_Detect
R577
10
WP_SW
R578
J502
SD_D0
10PIN/2.0mm
SD_D1
C100
C108
C111
C112
AOSDATA5_R
Card_Detect
20pF
20pF
20pF
20pF
D
E
1
2
GPIO8
GPIO8
SD_D2
SD_D3
SD_D1
SD_CMD
SD_CLK
SD_D0
AOSDATA5_R
3.3V
10k
10k
10k
10k
10k
10k
10k
3
4
E
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