All PSoC Application Notes

AN2145: Implementing Hardware Quadrature Phase Decoders

The PSoC family lacks a user module for decoding quadrature phase signals. However, quadrature phase decoders can be implemented on PSoCs by using an unusual arrangement of other user modules. Each decoder uses two digital blocks plus an inverter (or a third digital block on CY8C26xxx parts), is quarter- resolution, and can handle very fast counting rates. Two complete decoders can be implemented in a single device with room to spare.