Circuit comprising mutually asynchronous circuit modules

Details Circuit comprising mutually asynchronous circuit modules Circuit comprising mutually asynchronous circuit modules

2005-02-25

2010-11-09

Lee, Thomas (Department: 2115)

Electrical computers and digital processing systems: support

Synchronization of clock or timing signals, data, or pulses

C713S401000, C713S500000, C713S501000, C713S502000, C713S503000, C713S600000

Reexamination Certificate

active

07831853

ABSTRACT:
A circuit is described comprising a first (10) and a second circuit module (20) and a synchronization module (30). The first and the second module are mutually asynchronous, and are coupled by the synchronization module. The synchronization module (30) comprises: a transfer register (31) for storing data which is communicated between the two circuit modules, a control circuit (32) for controlling the register in response to a respective timing signal (St1, St2) from the first and the second circuit module, the control circuit comprising a control chain for generating a control signal (CR) for the transfer register (31). The control chain includes at least: a repeater (34) for inducing changes in the value of the control signal, at least one edge sensitive element (35) for delaying a change in the signal value until a transition in a selected one of the timing signals is detected.

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International Search Report dated May 9, 2005 in connection with PCT Patent Application No. PCT/IB2005/050698.
Written Opinion of the International Searching Authority dated Sep. 1, 2006 in connection with PCT Patent Application No. PCT/IB2005/050698.

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