Texas Instruments Incorporated
Serial bus repeater with low power state detection

Abstract:

A serial bus repeater includes a port circuit and a low power state detection circuit. The port circuit is configured to communicate via a serial bus. The low power state detection circuit includes a power state transaction identification circuit and a bus state identification circuit. The power state transaction identification circuit is configured to identify a power state transaction on the serial bus. The power state transaction is indicative of entering a reduced power state. The bus state identification circuit is configured to identify a value of termination resistance on the serial bus that is indicative of entering the reduced power state.