Asynchronous circuit for 2-cycle to 4-cycle handshake conversion

Details Asynchronous circuit for 2-cycle to 4-cycle handshake conversion Asynchronous circuit for 2-cycle to 4-cycle handshake conversion

1992-03-10

1995-02-07

Harrell, Robert B.

Boots, shoes, and leggings

364DIG2, 364934, 327141, G06F 1342

Patent

active

053882415

ABSTRACT:
A two- to four-cycle handshake protocol conversion circuit suitable for on-chip implementation uses an exclusive-OR Gate and an AND Gate with one inverted input together with a latching circuit to generate the two-cycle handshake protocol acknowledge signal, A2, as a clocked version of the two-cycle handshake protocol request signal, R2, using the rising edge of the four-cycle handshake protocol acknowledge signal, A4, as the clocking input. The four-cycle handshake protocol request signal R4 is provided as the ANDed output of the complement of A4 combined with the output of the exclusive-OR Gate, the inputs of which are provided by R2 and A2. The latching network may be provided by a simple D flip-flop.

REFERENCES:
patent: 3950705 (1976-04-01), Fuerherm
patent: 4070630 (1978-01-01), Hepworth et al.
patent: 4845437 (1989-07-01), Mansur et al.
patent: 4855615 (1989-08-01), Humpleman

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