Patent
1995-06-07
1997-03-25
Pan, Daniel H.
395309, 395250, G06F 9302, G06F 1516
Patent
active
056153830
ABSTRACT:
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.
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Caudel Edward R.
Magar Surendar S.
Donaldson Richard L.
Kesterson James C.
McClure C. Alan
Pan Daniel H.
Texas Instruments
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