Absolute Encoder VHDL core
The absolute encoder package (absenc_pkg) implements components for absolute encoder masters and slaves. It supports the following interfaces:
This implementation is optimized for applications that can be dynamically configured to use one amongst different types of interfaces at a particular time. As much as possible, resources that can be shared across interfaces are factorized (counters, comparators, shift registers …) and accessed through a multiplexer. However, and in order to avoid penalizing simpler applications, static configuration allows to exclude resources associated with an unused interface.
The master implements the following configurable data conversion pipeline:
- LSb to MSb
- Gray to binary
- Sign extension