GT-6816 View Datasheet(PDF) - Unspecified

Part Name

Description

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GT-6816

SCANNER Chips

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GT-6816

7:0 8’b0 DMA1 transfer byte count low byte

Note:

DMA1 transfer bytes count indicates the total bytes that will be transferred from M2 to

M1. Before DMA1 is active, set these two registers first.

DMA1 M1 starting address high byte register

CPU Read/Write

Address: FF83H

Bit Reset Description

7:0 8’b0 M1 starting address high byte

DMA1 M1 starting address low byte register

CPU Read/Write

Address: FF84H

Bit Reset Description

7:0 8’b0 M1 starting address low byte

Note:

DMA1 starting address indicates the initial address when DMA1 is on going. Address is

automatically increment by one when one byte transfer is done.

DMA M2 starting address high byte register

CPU Read/Write

Address: FF85H

Bit Reset Description

7:0 8’b0 M2 starting address high byte

DMA M2 starting address high byte register

CPU Read/Write

Address: FF86H

Bit Reset Description

7:0 8’b0 M2 starting address low byte

Note:

These two registers define the M2 starting address when DMA1 or DMA2 transfer are

enable. Note that these two registers are changed on the fly during DMA1 and DMA2. Be

careful to set the real initial address before DMA1 or DMA2 is enable.

DMA2 valid byte count high register

CPU Read/Write

Bit Reset Description

7:0 8’b0 DMA2 valid byte count high byte

31

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