On Mon, 08 Oct 2007 04:38:17 -0500, "eldesign" <bonaiuto@eldesign.it>
wrote:

>We are trying to use the TL16C554A quad uart
>
>The transmission rate we are interested is quite low: 4800bps
>
>We used the fifo polled mode as well as the fifo interrupt mode by
>programming the registers as described in the Datasheet.
>
>
>1) In fifo polled mode we check the lsbit in the LSR 
>
>2) In Fifo interrupt mode we check the IIR bit 3 with a threshold set to
>14.
>
>In both the use we lost a lot of data and we receive correctly 16-18 chars
>only for each of the transmitted sentence.
>
>Unfortunately no application note or reference design is available from
>TI.
>
>Is there anyone that have experience with problems with such a device??

This family of devices (sprouting from the 8250) is really quite
popular (as in PC).  Look beyond TI.  If you search, you'll find all
manner of drivers and examples.  Consider the Linux and BSD sources
for starters.

-- 
Dan Henry

We are trying to use the TL16C554A quad uart

The transmission rate we are interested is quite low: 4800bps

We used the fifo polled mode as well as the fifo interrupt mode by
programming the registers as described in the Datasheet.


1) In fifo polled mode we check the lsbit in the LSR 

2) In Fifo interrupt mode we check the IIR bit 3 with a threshold set to
14.

In both the use we lost a lot of data and we receive correctly 16-18 chars
only for each of the transmitted sentence.

Unfortunately no application note or reference design is available from
TI.

Is there anyone that have experience with problems with such a device??

thanks