Patent ID: 8598898

Claim:
A high-speed input-output apparatus comprising: a plurality of transmitters and receivers including a first transmitter and a first receiver; a plurality of loop-back connections, each loop-back connection being from an output of a transmitter to an input of a respective receiver, each loop-back connection including a first connector and a second connector for transmission of differential signals, the plurality of loop-back connections including a first loop-back connection from the first transmitter to the first receiver; and a first inductor and a second inductor for each loop-back connection, the first inductor having a first terminal and a second terminal and the second inductor having a first terminal and a second terminal, the first terminal of the first inductor being connected to the first connector of the loop-back connection and the first terminal of the second inductor being connected to the second connector of the loop-back connection, the second terminal of the first inductor and the second terminal of the second inductor providing a test access port for the loop-back connection for direct current testing of the apparatus, the first loop-back connection including a first test access port; and a receiver built-in self-test (BIST) and a transmitter BIST, wherein the receiver BIST and the transmitter BIST provide for high-speed loop-back testing and direct current testing of the apparatus, wherein the direct current testing includes parameter testing of the apparatus and bonding wire defect testing of the apparatus; wherein the bonding wire defect testing of the apparatus includes one or more of: testing for stuck-at bonding wire defects, and testing for bridging bonding wire defects; wherein testing for stuck-at bonding wire defects or bridging bonding wire defects for the first loop-back connection includes: turning off the connected transmitters and receivers, and measuring a current or voltage at one or more test access ports other than the first test access port.