22 Oct
2004
22 Oct
'04
8 a.m.
On Tue, 19 Oct 2004, Martin Bishop wrote:
wrt latency, not even asynchronous logic will give you
ZERO LATENCY. And,
if I've understood the requirement correctly it is to acquire a finite block
of data at a constant rate without gaps; so latency is not a system level
requirement.
You are of course correct, I was speaking casually, I meant
no VARIABLE latency, or more precisely, no latency not easily
correctable; zooming off to handle a foolish request from a timer
or human or disk controller. There's of course latencies all
over the damn place but they can be assumed to be constants and
therefore cancel each other out or fixed in software (eg. sample
to sample fixed skew). THen there's A/D aperture and other rot...