Wagner, have you looked at HP? I've only done the physical layer using
their modules based on the HSDL-1000. I've also looked at Unitrode, Siemens,
and Linear as well as the Maxim UART's mentioned earlier. All I did was test
a 3ft link between PCs using low-level serial routines in C.

   - Tom

At 09:45 AM 8/10/99 -0400, Wagner Lipnharski wrote:
>Remember that IrDa protocol is a vaste and several layers communication
>protocol. It is based on the HDLC (SDLC), and it uses several flow
>controls, identifiers and so on. I made a partial subset at the 8051 uC
>family to control a wireles printer, it took aprox 6 kbytes of code
>(assembler).
>
>The IrDa chips (controller and the transceiver) can also be programmed
>to work in "Raw InfraRed" mode, that is similar to the VCR remote
>controls IR modulation, and some other way.   But to ensure a real
>communication mode, with multi devices and protocol confirmation, you
>need to go for real IrDa.
>
>I used chips from Temic, as the TOIM3232 and TFDS4000, but the last one
>is a pain in the neck to get from the distributors, except if you want
>to buy in 750 pieces a time (whole reel). Their explanation is that once
>you open the sealed package the transceivers start to suffer from
>humidity and can not be restocked...  I wonder what happens after you
>solder them at the PCB... it must be some magic that stops the humidity
>attack.  Talking to someone at Temic, this person said that during the
>SMD reflow the unit cooks again and fix the humidity problem... then I
>asked him "what about if I solder it by hand"?... the guy probably
>entered in "duhhhh state" because I heard a long silence at the other
>side of the phone.


------------------------------------------------------------------------
Tom Handley
New Age Communications
Since '75 before "New Age" and no one around here is waiting for UFOs ;-)