IP Library › Patent Application 12189304
Patent Application
App. No. 12/189,304

Methods for the Support of JTAG for Source Synchronous Interfaces

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Quick Facts
Patent No.
US None
App. No.
12/189,304
Abstract

Exemplary embodiments of the present invention comprise a method for the support of a JTAG interface for the testing of connectivity between integrated circuits. The method comprises delivering output from a JTAG register to a primary register, delivering a JTAG control signal to the primary register and a clock signal gating control logic, delivering output from the primary register and a secondary register to a multiplexer, delivering clock signal output from the clock signal gating control logic to the multiplexer, wherein the clock signal is delivered is a constant and known value, and delivering the output from the multiplexer to an I/O driver.

Claims (6)

1 . A method for the support of a JTAG interface for the testing of connectivity between integrated circuits, the method comprising:

delivering output from a JTAG register to a primary register;

delivering a JTAG control signal to the primary register and a clock signal gating control logic;

delivering output from the primary register and a secondary register to a multiplexer;

delivering clock signal output from the clock signal gating control logic to the multiplexer, wherein the clock signal is delivered is a constant and known value; and

delivering the output from the multiplexer to an I/O driver.