Texas Instruments Corporation

Other

Edward R Caudel

Surendar S Magar

Michael J Cochran

Joseph H Raymond, Jr

Antony W Leigh

William R Wilson

Gary L Swoboda

Kevin C McDonough

Gary W Boone

Jerry D Merryman

Richard D Simpson

Daniel L Essig

Wanda K Gass

Thomas E Merrow

A system for real-time digital signal processing employs a single-chip microcomputer device (10) having separate on-chip program ROM (14) and data RAM (15), with separate address and data paths for program and data. An external program address bus (RA) allows off-chip program fetch in an expansion mode, with the opcode returned by an external data bus (D). A bus interchange module (BIM) allows transfer between the separate internal program and data busses (P-Bus and D-Bus) in special circumstances. The internal busses are 16-bit, while the ALU and accumulator (Acc) are 32-bit. A multiplier circuit (M) produces a single state 16.times.16 multiply function separate from the ALU, with 32-bit output to the ALU. One input to the ALU passes through a 0-to-15 bit shifter (S) with sign extension.

Device for digital signal processing

A system for real-time digital signal processing employs a single-chip microcomputer device having separate on-chip program ROM and data RAM, with separate address and data paths for program and data. An external program address bus allows off-chip program fetch in an expansion mode, with the opcode returned by an external data bus. A bus interchange module allows transfer between the separate internal program and data busses in special circumstances. The internal busses are 16-bit, while the ALU and accumulator are 32-bit. A multiplier circuit produces a single state 16.times.16 multiply function separate from the ALU, with 32-bit output to the ALU. One input to the ALU passes through a 0-to-15 bit shifter with sign extension.

Method of signal processing by contemporaneous operation of ALU and

Microcomputer for digital signal processing having on-chip memory and

Microcomputer system for digital signal processing

Modem employing digital signal processor

A system for real-time digital signal processing employs a single-chip microcomputer device having separate on-chip program ROM and data RAM, with separate address and data paths for program and data. An external program address bus allows off-chip program fetch in an expansion mode, with the opcode returned by an external data bus. A bus interchange module allows transfer between the separate internal program and data busses in special circumstances. The internal busses are 16-bit, while the ALU and accumulator are 32-bit. A multiplier circuit produces a single state 16.times.16 multiply function separate from the ALU, with 32-bit output to the ALU. One input to the ALU passes through a 0- to -15 bit shifter with sign extension.

A system for real-time digital signal processing employs a single-chip microcomputer device (10) having separate on-chip program ROM (14) and data RAM (15), with separate address and data paths for program and data. An external program address bus (RA) allows off-chip program fetch in an expansion mode, with the opcode returned by an external data bus (D). A bus interchange module (BIM) allows transfer between the separate internal program and data buses (P-Bus and D-Bus) in special circumstances. The internal buses are 16-bit, while the ALU and accumulator (Acc) are 32-bit. A multiplier circuit (M) produces a single state 16.times.16 multiply function separate from the ALU, with 32-bit output to the ALU. One input to the ALU passes through a 0-to-15 bit shifter (S) with sign extension.

Microcomputer system for digital signal processing having external

A system for real-time digital signal processing employs a single-chip microcomputer device having separate on-chip program and data memory, with separate address and data paths for program and data. An external program address bus allows off-chip program fitch in an expansion mode, with the opcode returned by an external data bus. A bus interchange module allows transfer between the separate internal program and data busses in special circumstances. The internal busses are 16-bit, while the ALU and accumulator are 32-bit. A multiplier circuit produces a single state 16.times.16 multiply function separate from the ALU, 32-bit output to the ALU. One input to the ALU passes through a 0-to-15 bit shifter with sign extension. The on-chip program memory may be a RAM and this additional RAM may be configured as either program or data memory space. The processor may operate with all off-chip program memory and a large on-chip data memory, or with program execution from on-chip RAM (downloaded from off-chip program memory) using a block move instruction. A repeat instruction is used to save program space when using block-move, or multiply instructions as needed for digital filters or the like.

Microprocessor with block move instruction

A system for real-time digital signal processing employs a single-chip microcomputer device having separate on-chip program ROM and data RAM, with separate address and data paths for program and data; however, the accumulator in the data path may be used as a program address source. An external program address bus allows off-chip program fetch in an expansion mode, with the opcode returned by an external data bus. A bus interchange module allows transfer between the separate internal program and data busses. The internal busses are 16-bit, while the ALU and accumulator are 32-bit. A multiplier circuit produces a single state 16.times.16 multiply function separate from the ALU, with 32-bit output to the ALU. One input to the ALU passes through a 0-to-15 bit shifter with sign extension. A separate shift or offset is provided in coupling the output of the accumulator to an internal data bus for use in scaling when storing the accumulator contents in internal data RAM specified by instructions. Also, the RAM itself has an internal shift function used in convolution.

Microcomputer with offset in store-accumulator operations

A system for real-time digital signal processing employs a single-chip microcomputer device having separate on-chip program ROM and data RAM, with separate address and data paths for program and data. An external program address bus allows off-chip program fetch in an expansion mode, with the opcode returned by an external data bus. A bus interchange module allows transfer between the separate internal program and data busses in special circumstances. The internal busses are 16-bit, while the ALU and accumulator are 32-bit. A multiplier circuit produces a single state 16.times.16 multiply function separate from the ALU, with 32-bit output to the ALU. One input to the ALU passes through a 0-to-15 bit shifter with sign extension. The data RAM has an internal shift arrangement useful in processing convolution algorithms. An addressed location in the RAM is read out and also shifted to the next higher location in one instruction cycle.

Microcomputer having data move circuits for within-memory shift of data

Microcomputer having shifter in ALU input

A system for real-time digital signal processing employs a single-chip microcomputer device having separate on-chip program ROM and data RAM, with separate address and data paths for program and data; however, the accumulator in the data path may be used as a program address source for table-read and table-write, for example. An external program address bus allows off-chip program fetch in an expansion mode, with the opcode returned by an external data bus. A bus interchange module allows transfer between the separate internal program and data busses in special circumstances, such as accumulator addressing. The internal busses are 16-bit, while the ALU and accumulator are 32-bit. A multiplier circuit produces a single state 16.times.16 multiply function separate from the ALU, with 32-bit output to the ALU. One input to the ALU passes through a 0-to-15 bit shifter with sign extension.

Microcomputer with table-read and table-write instructions

A system for real-time digital signal processing employs a single-chip microcomputer device having separate on-chip program ROM and data RAM, with separate address and data paths for program and data; however, the accumulator in the data path may be used as a program address source for table look-up, for example. An external program address bus allows off-chip program fetch in an expansion mode, with the opcode returned by an external data bus. A bus interchange module allows transfer between the separate internal program and data busses in special circumstances, such as accumulator addressing. The internal busses are 16-bit, while the ALU and accumulator are 32-bit. A multiplier circuit produces a single state 16.times.16 multiply function separate from the ALU, with 32-bit output to the ALU. One input to the ALU passes through a 0-to-15 bit shifter with sign extension.

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Houston, TX, United States of America

Edward R Caudel