Multi-chip module with configurable multi-mode serial link interfaces

An integrated circuit (IC) chip comprising:

• a first configurable serial link signaling interface to transfer serial data with a second IC chip, the first serial link signaling interface comprising:
• a first transceiver for selectively transmitting and receiving data along a first serial link;
• and
• a second transceiver for selectively transmitting and receiving data along a second serial link;
• a second configurable serial link signaling interface to transfer serial data with a third IC chip, the second serial link signaling interface comprising,
• a third transceiver for selectively transmitting and receiving data along a third serial link;
• and
• a fourth transceiver for selectively transmitting and receiving data along a fourth serial link;
• wherein the first and second transceivers are configured in a first mode of operation as a dual-duplex signaling interface for simultaneous bidirectional communication along the first serial link and the second serial link;
• and
• wherein the third and fourth transceivers are configured in a second mode of operation as a single-duplex signaling interface for unidirectional communication along the first serial link and the second serial link.

A multi-chip module (MCM), comprising:

• a chip substrate;
• a first integrated circuit (IC) chip mounted to the chip substrate, the first IC chip including:
• a first configurable serial link interface to transfer first serial data in a dual-duplex mode of operation, the first serial link signaling interface comprising:
• a first transceiver for selectively transmitting and receiving data along a first serial link;
• and
• a second transceiver for selectively transmitting and receiving data along a second serial link;
• a second IC chip mounted to the chip substrate, the second IC chip including:
• a second configurable serial link signaling interface to communicate with the first configurable serial link interface in a dual-duplex mode of operation, the second serial link interface comprising:
• a third transceiver for selectively transmitting and receiving data with the first transceiver along the first serial link;
• a fourth transceiver for selectively transmitting and receiving data with the second transceiver along the second serial link;
• and
• a third configurable serial link interface to communicate with a third IC chip via a single-duplex serial interface, the single-duplex serial interface configured to couple to a third serial link and a fourth serial link, the third configurable serial link interface configured to operate in a single-duplex mode of operation for unidirectional communication between the second IC chip and the third IC chip along the third serial link and the fourth serial link.