SX1302 PCI-e Board

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2.4. Signal Control
Chart 7: Signal control interface definition
Name
Pin No.
I/O
Description
Voltage
PPS
11
DI
GPS time input
3.3V
NRESET
13
DI
Reset
3.3V
RX_ON
42
DO
RX indicator
3.3V
TX_ON
44
DO
TX indicator
3.3V
CFG_ON
46
DO
CFG indicator
3.3V
2.4.1. PPS Signal
Support gps-pps input for receiving data packets with time stamps.
2.4.2. NRESET Signal
External control circuit can realize module reset. Pull up the NRESET interface
level for 0.05 ~ 0.2S and release it to reset the module. NRESET signal is sensitive to
interference. The routing on the module interface board shall be as short as possible
and processed in a packet.
2.4.3. RX_ON Signal
When the module is in the receiving state, the pin outputs high level, and the
on-board LED is on, which is connected to the GPIO of SX302.
2.4.4. TX_ON Signal
When the module is sending data, the pin outputs high level, and the on-board
LED is on, which is connected to the GPIO of SX1302.
2.4.5. CFG_ON Signal
When the module successfully configures parameters, the pin outputs high level,
and the on-board LED is on, which is connected to the GPIO of SX1302.
3. Antenna Interface
The antenna of this module is based on I-PEX 1 as below: