Hardware
DB-9 connector
Digi Connect SP and Digi Connect Wi-SP Hardware Reference
10
DB-9 connector
The figure and table provide information on DB-9 pin orientation and pin assignments.
DB-9 pin orientation
DB-9 pin assignments
Pin
EIA-232 EIA-422/485 Full-Duplex
EIA-485 Half-Duplex
1
DCD
CTS-
Not used
2
RXD
RXD+
RXD+
3
TXD
TXD+
TXD+
4
DTR
RTS-
Not used
5
GND
GND
GND
6
DSR
RXD-
RXD-
7
RTS
RTS+
Not used
8
CTS
CTS+
Not used
9
NA
TXD-
TXD-
JTAG interface
The Digi Connect SP Development Kit is provided with the case opened, providing access to the JTAG
interface which mates with a JTAG debugger plug; for example, the Macraigor Raven included in the
Development Kit.