External Parallel to Internal Wishbone Master Interface Microcontroller
Details
Category: System controller
Created: June 22, 2008
Updated: January 27, 2020
Language: VHDL
Other project properties
Development Status: Alpha
Additional info: Specification done
WishBone compliant: No
WishBone version: n/a
License: GPL
Description
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.
Features
- 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
Status
2008-06-23: Specification document available
