Re: IsThere a chip with multiple (4 or 8?) serial ports??
- From: Rich Webb <bbew.ar@xxxxxxxxxxxxxxxxxx>
- Date: Thu, 05 Jul 2007 02:06:17 GMT
On Wed, 04 Jul 2007 18:47:38 -0700, "terry@xxxxxxxxxxxx"
<terry@xxxxxxxxxxxx> wrote:
I need to build devices for a Marine application that will receive
multiple (4 or 8) serial signals. Typically the signals are 4800 baud,
N,8,1 with a burst length of up to 80 characters, and a repetition
rate of 1 to 2 per second. (These are NMEA signals). They are
uncoordinated signals from individual devices such as GPS receivers,
Engine monitoring instruments etc...
I'm looking for a chip with multiple serial ports (actually receive -
only would be OK here). I want to interface such a chip or chips to a
PIC which will do a small amount of supervision, possibly filtering,
and use it's main hardware UART or USB or a CAN controller to output
data to a computer.
I've searched thru MicroChip and some on Google etc. What I'd LIKE is
a serial-port chip designed to interface to a microcontroller by SPI,
serial, I2C etc. AND which has 4 to 8 serial ports.
The TI quads all seem to use a parallel bus interface. You could glue
them to the micro via an SPI bus with a CPLD or small FPGA.
Or, use a larger FPGA and instantiate as many UARTS as you need; check
over at opencores.org. Possibly even incorporate the micro on it too.
It might be simplest just go with the NXP (Philips) dual SPI chips,
like the SC16IS752.
.
- References:
- IsThere a chip with multiple (4 or 8?) serial ports??
- From: terry@xxxxxxxxxxxx
- IsThere a chip with multiple (4 or 8?) serial ports??
- Prev by Date: IsThere a chip with multiple (4 or 8?) serial ports??
- Next by Date: Re: OT but still techy: Stupid Cell Phone Features
- Previous by thread: IsThere a chip with multiple (4 or 8?) serial ports??
- Next by thread: Re: IsThere a chip with multiple (4 or 8?) serial ports??
- Index(es):
Relevant Pages
|
