_______________________________________________________________________ 1 PolaRxS_PRO
PolaRxS Product Family Hardware Manual v1.3.0
10
1.2.4
Ethernet
Pin # Description
1
TxD+
2
TxD-
3
RxD+
4
RxD-
1.2.5
OUT
Pin # Description
1
Reserved
2
GND
3
GP1 output, 3.3V. Use the command
setGPIOFunctionality
to set the level
of this pin.
4
GP2 output, 3.3V. Use the command
setGPIOFunctionality
to set the level
of this pin.
5
nRST_OUT. Open-collector output, driven low when the receiver is resetting.
1.2.6
IN
Pin # Description
1
Reserved, leave unconnected.
2
GND
3
Reserved, leave unconnected.
4
nRST_IN. Driving this pin low resets the receiver. Internally pulled-up.
Debouncing and deglitching is foreseen.
5
EVENTA, 3.3V CMOS, 5V tolerant, 100k
pull down resistor. This is the first
digital input for external event timing, see Firmware User Manual for operation.
6
EVENTB, 3.3V CMOS, 5V tolerant, 100k
pull down resistor. This is the
second digital input for external event timing, see Firmware User Manual for
operation.
7
ANT_EXT, external antenna power. Can be used to apply an external supply
voltage to the antenna. The voltage applied to ANT_EXT (V
ANT
) determines the
voltage source on the MAIN and AUX1 connectors, as follows:
if V
ANT
<2.0V or ANT_EXT left open, the antenna is powered by the internal
5V supply;
if 3.0V<V
ANT
<4.0V, there is no power provided to the MAIN connector;
if 5.0V<V
ANT
<12.0V, the antenna power supply is taken from ANT_EXT.
Warning:
Exceeding 12.0V for V
ANT
, or drawing more than 200mA from the antenna
connector can permanently damage the receiver.
1.2.7
Pin # Description
1
Reserved
2
Reserved
3
Reserved
4
Reserved
