Re: [Discuss-gnuradio] RS232 level shifter on RX/TX boards

[Matt Ettus]

Yang-Chieh Fan wrote:
> Dear Ettus Team,
>
> I was wondering if you would be able to tell me the exact model of the
> RS232 chips that are used on the BasicRX and BasicTX daughterboards
> for the USRP1 and USRP2 boards.
>
> Myself and my team member are currently working on an RFID-based
> project at The University of Adelaide, utilizing the USRP1 and USRP2
> boards in conjunction with the Gnu Radio software, and we were trying
> to get hold of the right datasheet for the RS232 chips. If you could
> let me know that would be much appreciated.


We never used the RS232 stuff.  It was never built and never tested and 
no firmware was written to use it.  The package outlines are there on 
old BasicRX and BasicTX boards, but not recent ones (the last 2.5 to 3 
years).  I strongly suggest you not bother with it.

Matt