RES-XR4-1U Installation Manual
Version 1.5
A-2
Themis Computer
A.2
USB Ports
The RES-XR4-1U supports two USB (Universal Serial Bus) ports (see
Figure A-1
for pinouts), USB 0 and USB 1, on the rear I/O panel. In addition, six USB ports are
supported from internal headers: USB 2/3, USB 4/5, USB 6, and USB 7.
Pinout descriptions are listed in
Table A-2
.
A.3
Serial Ports
The RES-XR4-1U supports one
male
DB9 serial port connector on the rear I/O
panel (see
Figure A-2
)—TTYA (COM 1). Another serial port TTYB (COM 2) is
accessed from the motherboard. COM 1 signal definitions are listed in
Table A-3
,
page A-2.
Figure A-1.
USB Connector Pinout
Table A-2.
USB Connector Signal Definitions
Pin
Signal Name
Pin
Signal Name
1
+5V
3
PO+
2
PO–
4
GND
Figure A-2.
COM 1 Serial Connector Pinout
Table A-3.
COM 1 Serial Connector Signal Definitions
Pin
Signal Name
Pin
Signal Name
Pin
Signal Name
1
DCD
4
DTR
7
RTS
2
RXD
5
GND
8
CTS
3
TXD
6
DSR
9
RI
Содержание RES-XR4-1U
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