HOST INTERFACE CIRCUIT FOR COPROCESSOR

摘要

PROBLEM TO BE SOLVED: To provide a host interface circuit for coprocessor capable of raising the portability of both hardware and software by suppressing the dependency with a microprocessor low. SOLUTION: This host interface circuit for coprocessor has an internal address bus S41; an internal strobe bus S51; an address command decoder part 101 for generating a command S7 and an operand S8 from the information encoded to an address on the internal address bus S41; a host decoder part 91 for decoding the write/read request to a data register part 5 and a control register part 6 from the microprocessor 1 by the address on the internal address bus S41 and a strobe signal on the internal strobe bus S51 to generate a host access signal S9; and an FSM part 71 for performing the control of an arithmetic part 4. COPYRIGHT: (C)2004,JPO