App note: Implementing a Manchester decoder using the CLC and NCO peripherals
Here is an application note from Microchip describing how to implement a hardware Manchester decoder using the CLC and NCO peripherals found on some of their PIC microcontrollers.
The objective of this document is to demonstrate how the NCO and CLC peripherals found on PIC16F devices can be used as a Manchester Decoder. Traditional algorithms can be firmware intensive and leave very small amount of CPU cycles to service other application needs. The following approach involves using blocks that operate independently of the CPU clock and have zero CPU utilization, allowing designers to service their applications along with data encoding and decoding.
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