Patent ID: 9720041
Date: 2017-08-01
CPC Classifications: G01R

Claim:
1. An integrated circuit, comprising: a scan chain that comprises scan cells, wherein each of the scan cells is associated with a neighboring scan cell, selection circuitry, a mixing device, and a through-silicon via, and wherein each of the scan cells comprises an input that is configured to receive selected data from the selection circuitry; wherein the selection circuitry is configured to select, in accordance with a control signal, between providing the input with data from an output of the neighboring scan cell or data from an output of the mixing device; and wherein the mixing device comprises a first input configured to receive data from the through-silicon via and a second input configured to receive the data from the output of the neighboring scan cell, and wherein the mixing device is configured to combine the data from the through-silicon via with the data from the output of the neighboring scan cell.