Texas Instruments Corporation

Jonathan G Bradley

Natarajan Kurian Seshan

Gene A Frantz

Kenneth L Williams

Tai Huu Nguyen

Jason A T Jones

Jason A Jones

Michael J Moody

Jeffrey R Quay

Subramaniyan Subuvenkat

James A Larimer

Jason AT Jones

Laurence RJr Simar

A microprocessor is described which includes a multi-channel serial port (MCSP) . MCSP includes clock generation and frame sync generation circuitry , multi-channel selection circuitry , and companding circuitry . The clock generation and frame sync generation circuitry is configurable by means of a Serial Port Control Register SPCR, and Receive Control Register RCR, a Transmit Control Register XCR, a Sample Rate Generator Register SRGR, and Pin Control Register PCR. The multi-channel selection circuitry is configurable by means of a Multi-Channel Register MCR, a Receive Channel Enable Register RCER and a Transmit Channel Enable Register XCER. Companding circuitry performs optional expansion or compression of received or transmitted data using &mgr;-LAW or A-LAW, as selected by the Receive Control Register or the Transmit Control Register.

Multi-channel serial port with programmable features

A microprocessor 1 is described which includes a multi-channel serial port (MCSP) 120. MCSP 120 includes clock generation and frame sync generation circuitry 300, multi-channel selection circuitry 310, and companding circuitry 320. The clock generation and frame sync generation circuitry is configurable by means of a Serial Port Control Register SPCR, and Receive Control Register RCR, a Transmit Control Register XCR, a Sample Rate Generator Register SRGR, and Pin Control Register PCR. The multi-channel selection circuitry is configurable by means of a Multi-Channel Register MCR, a Receive Channel Enable Register RCER and a Transmit Channel Enable Register XCER. Companding circuitry 320 performs optional expansion or compression of received or transmitted data using .mu.-LAW or A-LAW, as selected by the Receive Control Register or the Transmit Control Register.

A method for determining the energy consumption of a processor when executing a program is provided. The method initially selects the processor which will execute the program and then creates a model of energy used by said processor as a function of a plurality of instructions operable by said processor. The program whose energy consumption is to be determined is then executed using the energy model to determine the energy consumption of the program on the processor.

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Houston, TX, United States of America

Jonathan G Bradley