Ok, so if we want Analog Outputs on a daughter board, that is doable now! Next it will be interesting what you can give us for a default daughter board that we can add options to. But, I may be losing my counter inputs! I guess you guys can just not be all thing to all people, but you are getting close. Don.
On 10/2/06, Jesse Off <> wrote:
--- In ts-7000%40yahoogroups.com, "PeterElliot" <> wrote:
>
> --- In ts-7000%40yahoogroups.com, "Jesse Off" <joff@> wrote:
>
> > The CPLD/FPGA on the TS7400 currently has some space leftover that
> > we're thinking of creating multiple loads for similar to the TS-
> 7260
> > (XDIO, SD, 5UARTS, etc..) If anybody has some suggestions for
> extra
> > simple DIO-like functionality such as quadrature channels, PWM,
> > timers, frequency counters, etc, that would be useful give me a
> call
> > 480-837-5200 or send an email!
>
> Jesse,
>
> One thing that might be nice is a simple interface for driving a
> multiplexed 8-bit I/O bus.
Peter, this idea was the winner. :-) The TS-7400 now by default has a
simple 8-bit multiplexed bus that can be used on some of the DIO lines.
There is a 8-bit address register and 3 programmable polarity strobes
signals (ALE, RD, WR). You can use the remaining DIO's either as
predecoded chip-selects, address bits 8 and higher, or as standard
GPIO unrelated to the general purpose bus... We made sure the timing
was such that the multiplexed bus could be turned into an
ISA/unmultiplexed style bus with the simple addition of an external
(~$0.35) 74HC373 8-bit latch. This bus can actually be made to run
faster than our PC104 bus's and acheive data rates greater than 10
megabytes/sec!
Thanks for the great idea!
//Jesse Off
-- Dr. Don W. Carr J. G. Montenegro 2258 Guadalajara, Mexico +52-333-630-0704 +52-333-836-4500 ext 2930
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