Specifications

Signal Descriptions
ARM DUI 0447J Copyright © 2009-2014, ARM. All rights reserved. A-3
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A.2 UART interface
The motherboard provides four serial transceivers on the rear panel of the enclosure.
Figure A-2 shows the pin numbering for the 9-pin D-type male connector used on the V2M-P1
and Table A-1 shows the signal assignment for the connectors.
Figure A-2 shows the pinout that is configured as a Data Communications Equipment (DCE)
device.
Figure A-2 Serial connector
Note
Depending on system configuration, UART0 and UART1 are used for remote control, the
interface to the MCC, log file output, or Boot Monitor interface. See Chapter 3 Configuration.
Table A-1 Serial plug signal assignment
Pin UART0 J24A, top UART1 J24B, bottom UART2 J25A, top UART3 J25B, bottom
1 SER0_DCD NC NC NC
2 SER0_RX SER1_RX SER2_RX SER3_RX
3 SER0_TX SER1_TX SER2_TX SER3_TX
4 SER0_DTR
SER1_DTR
a
a. The SER1_DTR, SER2_DTR, and SER3_DTR signals are connected to the corresponding SER1_DSR,
SER2_DSR, and SER3_DSR signals. These signals cannot be set or read under program control.
SER2_DTR
a
SER3_DTR
a
5 SER0_GND SER1_GND SER2_GND SER3_GND
6 SER0_DSR
SER1_DSR
a
SER2_DSR
a
SER3_DSR
a
7 SER0_RTS SER1_RTS SER2_RTS SER3_RTS
8 SER0_CTS SER1_CTS SER2_CTS SER3_CTS
9 SER0_RI NC NC NC
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