Schematic Diagram - Usb Board (Cbx3) - Sony CMT-BX1 Service Manual

6-8. SCHEMATIC DIAGRAM – USB Board (CBX3) –
BOOT
R921 100k
FLG
C913
R920
10k
C914 0.1
EN R922 100k
R923 27
R924 27
AMO
R928
DO
USB-SO
TXD1
USB-SI R981 100
RXD1
BCK
A-IN R933
GATE
C915 0.1 R934
REQ
ST-REQ R938 100
R946 4.7k
R948 4.7k
HCD-BX5BT/CBX1/CBX3
• See page 46 for Waveforms.
C912 C910 C909
10p 22p 22p
R916
0
R919
100
X901
9MHz
R917
0
0.1
DVCC
USBOC
USBPON
D+
D-
AM0
NO USE
0
DVSS
DO
DATA
CLOCK
USB CONTROLLER
TXD1
IC901
TMP92CD28FG-2CB2
RXD1
NO USE
SDA
SCL
BCK
0
DATA
GATE
10k
DVCC
REQ
ST-REQ
G-1
G-2
DVSS
R949
4.7k
C904
• See page 46 for IC Block Diagrams. • See page 49 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
A0
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
29 29
S-RAM
IC921
IS61LV6416-10T
NC NC
A8
A6 A7
A9
A5 A8
A10
A4 A9
A11
A3 A10
WR
NC WE
D7
I/O8 I/O7
D6
I/O9 I/O6
RB922 47 D5
I/O10 I/O5
D4
I/O11 I/O4
VDD GND
GND VDD
D3
I/O12 I/O3
D2
I/O13 I/O2
RB921 47 D1
I/O14 I/O1
D0
I/O15 I/O0
SRAM-CS
LB CE
A12
UB A11
A13
OE A12
A14
A2 A13
A15
A1 A14
A16
A0 A15
C921
0.1
FB902
R926
15k
FB901
0
R925
15k
D901 D902
MC2837 MC2837
D905
MC2837
C917 C918
220 10
6.3V
VBUS POWER ON/OFF SWITCH
IC915
R5523N001BTR-F
EN OUT
C916
GND
0.1
FLG IN
HCD-BX5BT/CBX1/CBX3
CN905
19P
R970 100
CCE
CCE
R971 100
BUCK
BUCK
R972 100
BUS3
BUS3
R973 100
BUS2
BUS2
R974 100
BUS1
BUS1
R975 100
BUS0
BUS0
DVDD3.3V
DVSS
R976 100
LRCK
LRCK
USB-RST
USB-RST
ST-REQ
ST-REQ
R977 100
REQ
REQ
R978 100
GATE
GATE
R979 100
A-IN
A-IN (Page 34)
R932 100
BCK
BCK
USB-SI
USB-SI(RXD)
R982 100
USB-SO
USB-SO(TXD)
DI
DI(CTS)
DO R984 100
DO(RTS)
CN902
4P
(USB)
VBUS
D-
D+
GND
C930
0
CN908
2P
VBUS-5V
VBUS-GND
(Page 32)
CN904
7P
BOOT
BOOT
AM0
AM0
TXD1
TXD1
RXD1
RXD1 (NC)
RESET
RESET
DVSS
VCC
(CHASSIS)
EP901