dmarer@madvax.uop.edu (03/15/91)
Is there anybody out there who has designed systems using the Motorolla 56001 DSP? I am an undergraduate student working on a senior project, and I understand the workings of the chip, but do not have a real in-depth description of the technical stuff yet. (Documentation is slow in coming...) Do you have any suggestions as to what would be the best source for this technical information? (i.e. The part number of which spec sheets, some appl. notes, etc.) Also, what pitfalls await me when I finally plug the thing in? Any special details I should pay attention to? (Characteristics of the clock signal, power up sequence, quirks and tricks?) I'm designing a tone generation module (basically digital FM synthesis) with some sharp new ideas. The entire thing is based on one fast DSP (the 56001) and some I/O - estimated cost is around $300 for something that (as far as I can guesstimate) would cost 4-5 times store bought. It greatly reduces the overhead as far as chips and PC boards go, and places the processing burden on software instead of hardware like most FM synthesizers. Another concern I have is the D/A conversion - I plan to to 16-bit analog sound generation at 44.1[kHz] but can't find such a D/A. Does anyone have any suggestions about companies that make such a monster? (Our part catalogs are slightly antiquated.) Any helpful suggestions on getting quality output besides just sample&hold -> D/A -> LPF -> output? I've read articles (John Watkinson, The Art of Digital Audio) on dither, but I'm not sure if it would help or not. Any suggestions? If you'd like to hear more, drop me a line at the address below. I appreciate any input you might have! Thanx! Dennis Marer - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - dmarer@madvax.uop.edu or/dmarer@uop.uop.edu - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - "At the end of the play, it's up to you, the listener, the thinker, the master. You only live once! or/You don't even live once!" "Be happy or die." - A.o.N.