[sane-devel] Epson 1250: Programming the lm983x

Henning Meier-Geinitz henning@meier-geinitz.de
Wed, 24 Oct 2001 21:48:03 +0200


On Wed, Oct 24, 2001 at 10:16:39AM +0200, Ludovic Drolez wrote:
> But I have a question related to the programming of lm983x chip.
> - I've read the 9833 pdf, and I wonder where you can find how to
> modify the registers of the chip ? Which page show why you need
> to send one byte for read/write, one byte for the register, 2 bytes
> for data lenght and so on ???
> Stefan does not remember, it was in the source he got from Henning
> Meier-Geinitz test program for a Bearpaw scanner (LM9831 based).
> So does anyone know where are the specs of the lm983x's USB interface ?
> (not lm983x chips specs pdf).

I also found out about this looking at source code. I think it was the
code from hp4200 in connection with a piece of demo code for the
lm9831. I think it was also mentioned in a National Semiconductor
document, but I don't remeber the name. Something like software
application notes or similar.