Using the Optional Serial Signals
Signals GPIO 1 to 6 can be used as GPIO or Serial Port control signals DTR, DSR and DCD.
To configure signals DTR, DSR and DCD, place a jumper between JP4 and JP5 for that signal, as shown
in Figure 5.
D
C
D
2
D
T
R
1
D
S
R
1
D
C
D
1
D
T
R
2
D
S
R
2
G
P
IO
1
G
P
IO
2
G
P
IO
3
G
P
IO
4
G
P
IO
5
G
P
IO
6
JP3
JP4
JP5
Figure 5 Optional Serial Signals
To select the GPIO signals, place the jumper between JP3 and JP4. The GPIO signals are available at JP7.
Standard serial RS-232 signals are available on the DB-9 connectors J2 and J3 for serial ports 1 and 2,
as shown in Figure 6.
Figure 6 Serial Port DB-9 Connector
Table 6 DB-9 Pinouts for RS-232 Mode
DB-9 RS-232 Signal
1
2
3
4
5
6
7
8
9
Part Number 40183-101
Silex SX-550 Developer's Guide
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Содержание SX-550
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