Patent ID: 8826091

Claim:
An integrated circuit die, comprising: A. channel circuitry having a channel interface that includes: i. a bidirectional data input/output path for a test mode select signal, a test data in signal, and a test data out signal, ii. a clock input lead, and iii. a linking module interface that includes a test mode select output lead, a test data in output lead, a test data out input lead, and a test clock output lead; B. TAP domains, each TAP domain being connected to combinational logic and having a TAP interface that includes a test mode select input, a test data input, a test clock input, and a test data output; and C. TAP linking module circuitry having a first interface connected to the linking module interface of the channel circuitry and second interfaces, each second interface being connected to the TAP interface of a TAP domain.