Patent Number: 6,295,300

Title: Circuit and method for symmetric asynchronous interface

Abstract: A symmetric asynchronous interface circuit for interfacing between two asynchronously operating devices has a first and third synchronization circuits for synchronizing a READY signal outputted by a transmitting device to a clock signal on the side of a receiving device and outputting the synchronized READY signal to the receiving device, first and second delay circuits for delaying a signal corresponding to the synchronized READY signal outputted by the first/third synchronization circuit and outputting the delayed signal as an ACKNOWLEDGE signal, second and fourth synchronization circuits for synchronizing the ACKNOWLEDGE signal outputted by the first/second delay circuit to a clock signal on the side of the transmitting device, and first and second pulse generation circuits for generating a pulse signal when the synchronized ACKNOWLEDGE signal is supplied from the second/fourth synchronization circuit and outputting the pulse signal to the transmitting device as an ACKNOWLEDGE signal.

Inventors: Oyama; Koji (Tokyo, JP)

Assignee: NEC Corporation

International Classification: H04L 7/10 (20060101); H04J 003/06 ()

Expiration Date: 09/25/2018