External Parallel to Internal Wishbone Master Interface Microcontroller
This core is intended to be used as an interface between some functionality in an FPGA and an external microcontroller.
The external microcontroller provides a simple 8bit interface to control some functions within the FPGA. These functions are communicating using a wishbone compatible bus within the FPGA.
- 8 bit external interface to a simple parallel port of a regular microcontroller
- two cycle external bus transfers: first address, then data
- interrupt request flag
- bidirectional external data port
- wishbone compatible master interface to connect internal cores
2008-06-23: Specification document available