On Tue, May 23, 2006 at 08:54:57AM -0400, Hazelwood Lyle wrote:
> 
> > > With four I/O pins with the ability to do bit bang, is anybody else
> > > thinking "trivial low voltage PIC programmer"?
> > 
> > Hey! I knew I should have trademarked that name! ;-)
> > 
> > At $20 USD in singles it's only a twice as much as a 
> > traditional USB to 
> > serial cable. Does the part guarantee proper sync of bit 
> > banged signals?
> > 
> 
> I believe the "Bit Banged" data is clocked out at a rate 
> determined by the baud rate generator, possibly 4X that rate.

I wasn't too concerned about the speed. By sync I mean if you take
I/O pin A low, then toggle I/O pin B low then high, finally raising
I/O pin A high again, that those signals will occur in that order.

With modem control signals on cheap USB cables, no such guarantees
exists.

BAJ

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