Patent ID: 7579689

Claim:
An integrated circuit package comprising: a first die having a first integrated circuit thereon, and a first input terminal to and a first output terminal from the first integrated circuit, a second die having a second integrated circuit thereon, and a second input terminal to and a second output terminal from the second integrated circuit, a first external terminal accessible externally of the integrated circuit package, a second external terminal accessible externally of the integrated circuit package, and a switch circuit operable for selectively coupling the first input terminal to the first external terminal, the second output terminal to the second external terminal, and the first and second dies in such a way that the first die precedes the second die in a signal path for normal operation of the integrated circuit package, the switch circuit being selectively operable to facilitate testing of the first integrated circuit such that a test signal applied to the first external terminal is relayed to the first input terminal and a response signal on the first output terminal is relayed to the second external terminal, and the switch circuit being selectively operable to facilitate testing of the second integrated circuit such that a test signal applied to the first external terminal is relayed to the second input terminal and a response signal on the second output terminal is relayed to the second external terminal.