Digital signal processor with direct data transfer from external

Details Digital signal processor with direct data transfer from external Digital signal processor with direct data transfer from external

1993-09-28

1996-04-02

Treat, William M.

Boots, shoes, and leggings

395425, 364DIG1, G06F 1332

Patent

active

055049168

ABSTRACT:
A digital signal processor having a DMA controller adapted for image processing while transmitting data between an internal memory and an external memory. The DMA controller includes a frame horizontal size register for representing a horizontal size of a two dimensional address space and block horizontal size register for representing a horizontal size of a rectangular portion in the two dimensional address space with a block address register for indicating a head address of source area, an internal memory start address register for representing a head address of destination area, and a word register. An address calculation unit in the DMA controller generates addresses based on two horizontal size register. An external data memory connecting unit in DSP for connecting the internal memory and the external memory has two modes. One is a mode of outputting an address in two machine cycles, and the other is a mode of outputting an address in one machine cycle.

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