> I used ADM3202 [1].  I asked a H/W coworker to connect the board <->
> IC <-> connector.  He said he could use the referencial schematics
> (seen in the following URL and in the datasheet).
> 
> (I don't understand even such an easy schematics. :-)
> 
> Masao
> 
> [1] http://www.analog.com/en/prod/0,,767_831_ADM3202,00.html

The schematic I'm using is exactly the same as the one in the URL.

You need to connect:

1) TxD, RxD, and GND as:

	ADM3202 T1IN  <-> TxD from CPU
	ADM3202 R1OUT <-> RxD from CPU

	ADM3202 T1OUT <-> TxD to connector
	ADM3202 R1IN  <-> RxD to connector

	ADM3202 GND   <-> GND to connector

2) 5 capacitors as the reference shows.

Masao