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Micro with 5-6 independent UARTs?

Started by ElderUberGeek June 4, 2007
Anyone know of a micro that has 5-6 UARTS that can each run a
different baud rate? (meaning not the same clock). Oh, and a TCP stack
would be nice also....

Thanks

"ElderUberGeek" <aribloch@gmail.com> wrote in message 
news:1180961674.704823.173120@n15g2000prd.googlegroups.com...
> > Anyone know of a micro that has 5-6 UARTS that can each run a > different baud rate? (meaning not the same clock). Oh, and a TCP stack > would be nice also....
The Rabbit series fits your bill. Steve http://www.fivetrees.com
The m32c has five uarts.  The upcoming r32c has NINE :-)

Both have an addr/data bus that can talk to ethernet chips, ram, etc.
On Jun 4, 6:40 pm, "Steve at fivetrees" <s...@NOSPAMTAfivetrees.com>
wrote:
> "ElderUberGeek" <aribl...@gmail.com> wrote in message > > news:1180961674.704823.173120@n15g2000prd.googlegroups.com... > > > > > Anyone know of a micro that has 5-6 UARTS that can each run a > > different baud rate? (meaning not the same clock). Oh, and a TCP stack > > would be nice also.... > > The Rabbit series fits your bill. > > Stevehttp://www.fivetrees.com
Yes, only that Rabbit SBC is more expensive than a single chip. Anyway, I will have a look to refresh the old noodle... Thanks
ElderUberGeek wrote:

> >Anyone know of a micro that has 5-6 UARTS that can each run a >different baud rate? (meaning not the same clock). Oh, and a TCP stack >would be nice also.... > >Thanks
The MC9S12XDP512 has 6. The forthcoming XDE series has 8. Andy
ElderUberGeek <aribloch@gmail.com> wrote:
> > Anyone know of a micro that has 5-6 UARTS that can each run a > different baud rate? (meaning not the same clock). Oh, and a TCP stack > would be nice also.... >
The Freescale "Star12" family have plenty of UARTs and I'm aware of at least one TCP/IP stack for it, although I'm not sure if that stack is still an actively maintained product. Do you want to use the device as a router (i.e. do you want to run IP over several of the UARTs? - that might affect the choice of stack). pete -- pete@fenelon.com "how many clever men have called the sun a fool?"
On Jun 4, 8:05 pm, Pete Fenelon <p...@stratos.fenelon.com> wrote:
> > The Freescale "Star12" family have plenty of UARTs and I'm aware of at > least one TCP/IP stack for it, although I'm not sure if that stack > is still an actively maintained product. > > Do you want to use the device as a router (i.e. do you want to run IP > over several of the UARTs? - that might affect the choice of stack). > > pete
Hi Pete. Well, I guess you could say I want to run it as a router of sorts, but not from the angle of running IP over the serials. The thing is that there is a device that has only one serial connection, yet I need to interface several other serial devices to it (and yah, one IP also). What's more, the serials are all different (some 485 some 232) and different baud rates....

ElderUberGeek wrote:

> Anyone know of a micro that has 5-6 UARTS that can each run a > different baud rate? (meaning not the same clock). Oh, and a TCP stack > would be nice also....
In the addition to the other good advices, it is worth mentioning the standalone multichannel UARTs made by Oxford Semi. Also, if it is sufficient to provide for the bit rates of up to 38400, any fast microcontroller would easily do 5-6 independent UARTs by bit banging. Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com
ElderUberGeek <aribloch@gmail.com> wrote:
> > Hi Pete. Well, I guess you could say I want to run it as a router of > sorts, but not from the angle of running IP over the serials. The > thing is that there is a device that has only one serial connection, > yet I need to interface several other serial devices to it (and yah, > one IP also). What's more, the serials are all different (some 485 > some 232) and different baud rates....
From the IP point of view almost any of the stacks that have been ported to the Star12 will be fine in that case. My concern was if you wanted to have it routing between two or more SLIP or IP-over-PPP links - I think there are few stacks ported to 8-bit devices that do routing properly! The Star12 will be able to handle the rest of the comms with no problems ;) pete -- pete@fenelon.com "how many clever men have called the sun a fool?"
On Jun 4, 3:54 pm, ElderUberGeek <aribl...@gmail.com> wrote:
> Anyone know of a micro that has 5-6 UARTS that can each run a > different baud rate? (meaning not the same clock). Oh, and a TCP stack > would be nice also.... > > Thanks
Have a look at the MPC5200B. Has 6 UARTS (which can do a lot of things, UART being their most basic function), also a 10/100 Ethernet, USB, ATA, PCI, DDRAM and some more. Costs $18 at 1000+, I saw it stocked around $25 at Digikey (1 piece price). With the 400 MHz PPC core inside, you'll likely have more than ehough horsepowers. Oh, the whole thing consumes 1 Watt at full power (memory etc. apart). Dimiter ------------------------------------------------------ Dimiter Popoff Transgalactic Instruments http://www.tgi-sci.com ------------------------------------------------------