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96 Appendix B: Technical reference
Internal connector pins
1
2
3
4
5
6
7
8
9
10
*. When creating a custom bracket to hold the DB-9 (exterior) connector, use this information to wire the internal connector pins to the DB-9 (exterior) connector.
serial data. The SHB integrates 16550/16450-compatible UARTs, which feature
independently programmable baud rates and internal 16-byte FIFO memory
buffers.
The serial ports conform to the RS-232 interface standard. Each port supports a
single device (point-to-point connection), and data communication is
single-ended
Use a standard COM port cable with a standard D-subminiature 9-pin (DB-9
connector to connect the serial port header to your custom adapter bracket
The following table describes each pin of the RS-232 serial port headers for Matrox
Supersight SHB-5520 (COM ports 1 and 2).
Pins on the DB-9 (exterior) connector of the custom
*
adapter bracket
1
6
2
7
3
8
4
9
5
NC
*. More accurately known as a DE-9 connector.
1
5
6
9
Signal
I/O
Description of RS-232 standard
DCD
I
Data carrier detect.
DSR
I
Data set ready.
RXD
I
Receive data.
RTS
O
Request to send.
TXD
O
Transmit data.
CTS
I
Clear to send.
DTR
O
Data terminal ready.
RI
I
Ring indicator.
GND
-
Ground.
NC
-
Not connected.
*
)
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