Single chip communication data processor with direct memory access controller having a channel control circuit
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United States of America Patent
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May 5, 1992
Grant Date -
N/A
app pub date -
Jan 16, 1990
filing date -
Jan 23, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a DMA controller incorporated in a data processor, comprising a plurality of channels and a control circuit for overseeing these channels. Each of these channels has registers for storing transfer parameters (address and byte count), registers for storing control parameters (status and command), data assembler circuit, and a channel control circuit that controls these registers and data assembler circuits. The channel control circuit in each channel simultaneously processes transfer parameters for an increased data transmission rate and a reduction of the internal processing unit work load.
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