Design of Interface Circuit for CNC Motion Control Card Based on Dual-port RAM Chip IDT7005 and its Application in ISA Model

This paper introduces IDT7005 chip and its arbitration logic designs an Interface circuit of NC motion control card based on IDT7005 and discusses the Interface circuit design between ISA bus and dual-port RAM chip IDT7005 and control circuit program design of ispGAL20V8B.This interface circuit has been used in CNC machine tool motion control card,with accuracy data transmission and high reliability.