Delta Sigma Modulator

A simple, first order Delta Sigma Modulator
Submitted by Jim Patchell

Delta Sigma Modulator for doing Digital->Analog Conversion
This is a first order delta sigma converter...it will be fairly low quality because of that.
One note...this was something I did at work...I just typed it in again here at home...it does compile...but I don't know if it works...I will try and test it real soon.

Use:

clk............system clock
reset.........system reset
d..............data input, 16 bits (this is the audio data)
wd............Write data into holding register
sample......Bit stream sample rate input
bs.............Bit Stream output (goes to LP filter)
ready........Holding register is ready for next data word

Source:

The source is here deltasigma.v
It is free, but please leave the authors name and webpage link in the code