WM_PRJ_Q2501_PTS_002
- 001
March
2004
confidential ©
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3.4.2.2
Auxiliary GPS Serial Link implementation (GPS_UART0)
This 2-wire serial interface is a 1.8 V interface.
Default protocol on this serial link is RTCM.
However, NMEA protocol can be available on this serial link by software
configuration via the GPS Base Band section.
Pin Description
Signal
Pin #
I/O
I/O type
Description
GPS_RXD0
3
O
GPS_1X
CT104- Receive Serial Data
GPS_TXD0 4 I CMOS
1.8 V
CT103- Transmit Serial Data
GPS_TXD0
GPS_RXD0
S_GPS_RXD0
S_GPS_TXD0
NC
GND
GND
R1=0 R2=NC => Autoshutdown
R1=NC R2=0 => Force On
2V8
R1
R2
Figure 31: Example of RS232 level shifter implementation for GPS UART0
Summary of Contents for WISMO Quik Q2501
Page 69: ......
