Patent ID: 7773667
Filing Date: 2010-08-10
Classification: G01R

Abstract:
1. A method for pseudo asynchronous testing of a serializer/deserializer device, the method comprising: providing, as a pseudo asynchronous input serial data, an output of a selected tap of a plurality of taps of a controlled tap delay, the selected tap having a phase offset from a data transition tap of a plurality of data transition taps of the plurality of taps; adjusting the plurality of taps in response to the pseudo asynchronous input serial data wherein a first data transition tap of the plurality of data transition taps is adjusted to coincide with a data transition of the pseudo asynchronous input serial data and a second data transition tap of the plurality of data transition taps is adjusted to coincide with a next data transition; comparing a corresponding output to a predetermined parameter; and providing a pass indication when a measured parameter is one of above or below a threshold with respect to the predetermined parameter or providing a fail indication when the measured parameter is the other of above or below the threshold with respect to the predetermined parameter.