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SubjectRe: PT2254A - Anybody know this chip?
On Tue, 23 Mar 1999, Jon Tombs wrote:

> I can't find any reference to this chip, I believe it is a two channel
> serially programmed volume control. But I haven't been able to guess the
> programming protocol, I can change the volume, but the same byte sequence
> never works twice!

Try varying the length of the data word...it may not be an even byte
length. I've seen chip's for similar applications that use oddball word
lengths like 25 bits.


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