Patent ID: 11899063
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. The IC of claim 1, further including:
a plurality of bi-directional buffers coupled to a plurality of input/output (I/O) pins, each bi-directional buffer has an output port coupled to an input of the scan chain and an input port coupled to an output of the scan chain;
a direction signal coupled to control the bi-directional buffers, the direction signal is a control signal generated by the second circuit; and
control logic coupled to the plurality of bi-directional buffers operable to cause the integrated circuit to:
receive a test pattern using the plurality of I/O pins operating in parallel;
scan a test pattern into the scan chain using a shift clock operating at a first rate;
capture a response pattern to the test pattern from the scan chain;
scan the response pattern from the scan chain using a shift clock operating at a second rate that is slower than the first rate; and
communicate the response pattern using the plurality of I/O pins operating in parallel.