1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A
Date: 1/28/2010 Sheet of
File: N:\PCBMGR\..\06731-2_USB.SchDoc Drawn By:
Auxiliary I/O Board (USB)
A
32
RT
06731
TXD-A
RTS-A
DTR-A
RXD-A
CTS-A
DSR-A
DCD-A
RI-A
V-BUS
VBUS 1
D- 2
D+ 3
GND 4
J4
USB
GND
GND
V-BUS
CHASSIS
GND
GND
C1+
28
C1-
24
C2+
1
C2-
2
TI1
14
TI2
13
TI3
12
RI3 6
RI2 5
RI1 4
TO3 11
TO2 10
TO1 9
RO2 20
V- 3
V+ 27
VCC 26
STAT
21
SHTDN
22
RI4 7
RI5 8
ONLINE 23
GND 25
RO1
19
RO2
18
RO3
17
RO4
16
RO5
15
U9
SP3243EU
GND
R12
4.75k
GND
1
2
nc
3nc 4
5
6
U11
NUP2202W1
TXD-B
RXD-B
CTS-B
RTS-B
DSR-B
DTR-B
RI-B
DCD-B
MT1
MT-HOLE
C24
4.7uF
C26
1uF
C25
0.1uF
C22
0.1uF
C23
0.1uF
C19
0.1uF
C20
0.1uF
C21
0.1uF
DS4
GRN
R11
2.2k
CHASSIS
MT2
MT-HOLE
R14
0
R15
0
DCD
2
RXD
1
TXD
4
DTR
3
GND
6
DSR
5
RTS
8
CTS
7
RI
10
N/C
9
J3
DF11-10DP-2DS(24)
V-BUS
CHASSIS-1
22
21
19
18
DCD 1
RI 2
DTR 28
DSR 27
TXD 26
RXD 25
RTS 24
CTS 23
GND 3
16
15
13
10
14 20
17
VBUS
8VREG-I
7D-
5
RST
9
SUSPEND
11
SUSPEND
12
VDD
6
D+
4U10
CP2102
3.3V
07270B DCN 6512
D-35