Craig R. Audio wrote:

Cary Smith wrote:
>
> Hello,
> I am developing a voive record ....

Cary,

I am also suggesting the IDS chip. I have been using the ISD2590. What
length are you going to be using? I know of a deal on ISD2575 chips.
Someone has 17K chips which they cannot use all of them. Also, be careful
of reset conditions. If the ISD chip comes to life before the controller,
you can get address 0 message to play. Had to solve this one the hard way
.. adding hardware.

Craig R. Autio
cautio@equinox.shaysnet.com

I had the same problem, However I just used 10k resistors to tie the PD, CE, and the two upper address lines to an Initial value. The 2 upper address lines act as control lines also. When they are both high, the other address pins act as toggles of various modes: message cueing (spelling?), continues play of message starting at 0, ect. If you are not taking care of these upper address lines via pull down resistors, the chip will continually replay the message at address 0 until the sound chip has it's power supply disrupted (reset) and returned, hopefully with the address lines correct.
Just thought I'd mention something that took me many days and sleepless nights to discover.