Hardware Information; Auxiliary Channel Configuration; Auxiliary Channel: Rts-Cts Handshaking - Quatech SSP-200 User Manual

6. Hardware Information

6.1 Auxiliary Channel Configuration

An auxiliary channel is provided which allows for handshaking between the SSP-200/300 port
and a peripheral device. This auxiliary channel may be configured in one of two ways:
v RTS-CTS handshake enabled.
v handshaking is disabled.

6.1.1 Auxiliary Channel: RTS-CTS Handshaking.

The RTS-CTS handshake may be enabled so that RTS (request to send) is the auxiliary output
signal on AUX OUT+ (pin 1) and AUX OUT- (pin 6). Similarly, CTS (clear to send) is the
auxiliary input signal on AUX IN+ (pin 5) and AUX IN- (pin 9). This configuration is shown
below.
Hardware Information
16C750
UART
TXD
RXD
-RTS
-CTS
Figure 0. Auxiliary Channel RTS-CTS Handshaking
RS-422/485
Drivers/Receivers
Driver
Receiver
Driver
Receiver
DATA OUT
+
-
DATA IN
+
-
AUX OUT
+
-
AUX IN
+
-
6-1