Rikaline GPS-22 - Manual (Page 7)

GPS-22 Manual
Rikaline
Specifications subject to change without prior notice
Rikaline Marketing Corp.
1)
All I/Os on the Data Interface are related to VCC (3 to 3.6 Volts) and GND levels.
2) ON/OFF: control the GPS engine “ON” or “OFF”. If this pin is pulled “HIGH” whenever a reset
condition occurs or if it is turned “HIGH” during operating, the GPS engine is turned “ON”. If this pin is
pulled “LOW” whenever a reset condition occurs, the GPS engine is not started. If this pin is turned
“LOW” when in operating, the GPS engine is turned “OFF”. When ON/OFF is “LOW”, the on/off state can
be superseded with the PXEMaRT manufacturer specific NMEA sentence on RXA, as defined below.
3) USPED, RXA and TXA: The Serial NMEA data port (RXA and TXA) is an asynchronous serial port
(UART).
USPED “HIGH”: 9600 Baud rate, 8 bit data, no parity check, 1 stop bit and no flow control
USPED “LOW”: 4800 Baud rate, 8 bit data, no parity check, 1 stop bit and no flow control .
This setting can be modified with the PXEMaPT manufacturer specific NMEA sentence defined below.
4) PPS: This is Pulse Per Second highly accurate timing signal generated by the on-board GPS base
band processor. After a reset condition, the default setting for this port is inactive. This setting can be
modified with the PXEMaPS manufacturer specific NMEA sentence defined below.
5) The receiver has 2 reset conditions: first, on power-on, thanks to an on-board Power On Reset
circuitry; and second an external reset when the RESETN pin is “LOW”.
6) VCC: The VCC core pin is connected to the on-board regulated supply voltage that powers the MCU
and GPS base band cores.