Other Parts Discussed in Thread: BQ76PL455A
Greetings,
I am using BQ76PL455A-Q1 for my project. I checked my hardware and tested it according to specifications provided in design guide. Right now I am connecting single board to bq76PL455A_GUI using a USB to TTL module(CP2102). When I open the GUI, it shows me the port number for my USB-TO-TTL module but on clicking OK a message stating "unable to open COM port " pops up. When I probed UART lines using DSO I found that GUI is transmitting data packets on RX(of BQ76PL) but TX line always remain high. I have already made hardware changes like - pulling down COMML- to ground using 100K, COMML+ connected to V5VA0. My questions are:-
(1) What voltage I will get on TX pin of BQ76PL455A ? Right now I am getting 5V on TX pin(no pull-ups are there)
(2)Is it necessary to use FTDI converters (as I am using CP2102 module)?
Thanks
Best Regards
Bhushan