How to implement the 16-bit Quadrature Counter with GAL or CPLD?

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Hi,

How to implement the 16-bit Quadrature Counter with GAL or CPLD?
Is it possible to emulate such as IC from HP HCTL-2016 or HCTL-2020?

Please Help

Thx + Rgds,

Tr2000
 

quadrature counter

It is possible in a small CPLD. I have implemented a dual channel quadrature counter in a Lattice (1032 - I don't remember exactly).
You have to build a small state machine.
 

quadrature decoder cpld

Here is a dual quadrature decoder
 

Re: Quadrature Counter

Hi
Take a look at Microchip site motor section.
A lot of infos of use
 

Quadrature Counter

really thanx
 

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