Texas Instruments Incorporated
SYSTEM BASIS CHIP

Abstract:

A system basis chip (SBC) includes a serial peripheral interface for communication with a processor, a set of registers for storing information operable to control an external communication interface device, and a control signal output adapted to be coupled to the external communication interface device. In some implementations, the set of registers includes a first register for information indicative of a function of the control signal, and a second register for information indicative of a value of the control signal. The function of the control signal for the external communication interface device can be a supply voltage interrupt, a watchdog interrupt event, a counter-based watchdog interrupt event, a local wakeup request, a bus wakeup request, an entrance into a fail-safe mode of operation, or a general purpose output signal. In some implementations, the SBC also includes a supply voltage output adapted to be coupled to the external communication interface device.