Reading GPS data from SIRF GSC3f

[zorlu]

Hello,
I am trying to read the gps data NMEA from SIRF GSC3f serial interface TXA channel.
I have connected my MCU as ttl level. But I dont recieve anything.
I recieved a few strange characters only o 38400 baud.
Itried all the other baudrates aswell.
Am I missing something?
the sirf.com is not working and I couldnt find detailed datasheet either.

 

[udayan92]

Which microcontroller are you using..?

 

[horace1]

it is possible you have the incorrect baud rate or you are loosing charcacters
e.g. if you are using two UARTs
1. 38400 to modem
2. 9600 to a PC
if you receive characters from the modem at 38400 and then transmit to PC at 9600 unless you use UART receive interrupts you will miss more than half the modem data

let us have more details of microcontrooler used, how it is connected, etc.