Schematic Diagram - Usb Board - Sony HCD-GT22 Service Manual

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3 7 6 3 1 5 1 5 0
7-10. SCHEMATIC DIAGRAM – USB Board –
BOOT
R921 100k
FLG
C913
R920
10k
C914 0.1
EN R922 100k
R923 27
R924 27
AMO
R928
DO
DATA R986 100
CLOCK R985 100
USB-SO
TXD1
USB-SI R981 100
RXD1
T E
L 1 3 9 4 2 2 9 6 5 1 3
BCK
A-IN R933
GATE
C915 0.1 R934
REQ
ST-REQ R938 100
w w w
HCD-GT22/GT44/GT55
• See page 36 for Waveforms. • See page 58 for IC Block Diagrams.
C912 C910 C909
10p 22p 22p
R916
0
R919
100
X901
9MHz
R917
0
11
0.1
DVCC
USBOC
USBPON
D+
D-
AM0
NO USE
0
DVSS
DO
DATA
CLOCK
USB CONTROLLER
TXD1
IC901
TMP92CD28FG-2CB4
RXD1
NO USE
SDA
SCL
BCK
0
DATA
GATE
10k
DVCC
REQ
ST-REQ
R945
G-1
4.7k
G-2
R947 4.7k
DVSS
R950
4.7k
C904
x a o
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• See page 61 for IC Pin Function Description.
A7
A6
A5
A4
RB923
47
D8
D9
D10
D11
RB924
47
D12
D13
C907
0.1
D14
A12 D15
A12
A11 LB
A11
A10 UB
A10
A9 RD
A9
A8 A3
A8
A2
DVCC
A1
DVSS
A7
C922
A7
0.1
A6
A6
A5
A5
A4
A4
A3
A3
A2
A2
A1
A1
Q Q
A0
3 7 6
D15
D15
D14
D14
D13
D13
C920
D12
0.1
D12
D11
D11
D10
D10
D9
D9
D8
D8
DVCC
DVSS
C906
0.1
EN
FLG
C905
10
0.1
16V
u 1 6 3
33 33
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2 4
8 9 9
S-RAM
IC921
IS61LV6416-10T
NC NC
A6 A7
A5 A8
A4 A9
A3 A10
NC WE
I/O8 I/O7
I/O9 I/O6
RB922 47
I/O10 I/O5
I/O11 I/O4
VDD GND
GND VDD
I/O12 I/O3
I/O13 I/O2
RB921 47
I/O14 I/O1
I/O15 I/O0
SRAM-CS
LB CE
UB A11
OE A12
A2 A13
A1 A14
A0 A15
C921
0.1
FB902
3 R926 1 5 1 5 0 8 9 2
15k
FB901
R925
15k
D901 D902
MC2837 MC2837
C917
220
6.3V
VBUS POWER ON/OFF SWITCH
IC915
R5523N001BTR-F
EN OUT
C916
GND
0.1
FLG IN
m
c o
.
HCD-GT22/GT44/GT55
2
8 9 9
CN907
21P
A8
R970 100
CCE
A9 CCE
BUCK R971 100
A10 BUCK
R972 100
BUS3
A11 BUS3
R973 100
BUS2
WR BUS2
R974 100
BUS1
D7 BUS1
R975 100
BUS0
D6 BUS0
D5 DVDD+3.3V
D4 DVSS
R976 100
LRCK D
LRCK
USB-RST
USB-RST
ST-REQ MAIN
D3 ST-REQ
BOARD
R977 100
REQ
(3/4)
D2 REQ
R978 100 CN301
GATE
D1 GATE
(Page 40)
R979 100
A-IN
D0 A-IN
R932 100
BCK
BCK
USB-SI
A12 USB-SI(RXD)
R982 100
USB-SO
A13 USB-SO(TXD)
DI
A14 DI(CTS)
DO R984 100
A15 DO(RTS)
CLOCK
A16 CLK
DATA
DATA
CN903
5P
(USB)
VBUS E
D-
D+
MIC
4 9 8 2 9 9
BOARD
GND
CN802
(Page 43)
C919 C930
0.1 0
CN901
2P
C
VBUS-5V
VBUS-GND
5V REG
BOARD
(Page 41)
CN904
7P
BOOT
BOOT
AM0
AM0
TXD1
TXD1
RXD1
RXD1 (NC)
RESET
RESET
DVSS
VCC