MFC2000 datasheet(124/426 Pages) ETC

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MFC2000 Multifunctional Peripheral Controller 2000

Hardware Description

4-94

Conexant

100723A

Address:

cscontenb

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default:

DMA Count Enable

(DMACntConfig)

$xx81C5

Not Used

DMA 12

Count

Enable

DMA 11

Count

Enable

DMA 10

Count

Enable

Rst. Value

07h

Read

Value 07h

Address:cscontenb Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default:

DMA Count Enable

(DMACntConfig)

$xx81C4

DMA 9

Count

Enable

DMA 8

Count

Enable

DMA 7

Count

Enable

DMA 6

Count

Enable

DMA 5

Count

Enable

DMA 4

Count

Enable

DMA 1

Count

Enable

Not Used

Rst. Value

FEH

Read

Value FEH

•

DMA Address Count Enable Control. The Count Enable control bit allows the user to enable address Count

after each DMA access. If the Count Enable control bit is not set the address will remain fixed.

Address:

cscontenb

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default:

DMA Endian Control

(DMAEndian)

$xx81C7

Not Used

DMA 12

Endian

Control

DMA 11

Endian

Control

DMA 10

Endian

Control

DMA 9

Endian

Control

DMA 8

Endian

Control

Rst. Value

00h

Read

Value 00h

Address:cscontenb Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default:

DMA Endian Control

(DMAEndian)

$xx81C6

DMA 7

Endian

Control

DMA 6

Endian

Control

DMA 5

Endian

Control

DMA 4

Endian

Control

DMA 3

Endian

Control

DMA 2

Endian

Control

DMA 1

Endian

Control

Not Used

Rst. Value

00H

Read

Value 00H

•

DMA Address Endian Control. If the Endian Control Bit is set to a 1, the data structure will be changed

between the Little Endian mode and the Big Endian mode.

The current data structure

The changed data structure

address 00: Byte 0

address 11: Byte 0

address 01: Byte 1

address 10: Byte 1

address 02: Byte 2

address 01: Byte 2

address 03: Byte 3

address 00: Byte 3

For DMA 1 (the external DMA channel) and DMA 2 (programmed as external DMA channel), this endian control

can’t be used for accessing external memory (the associated bit needs to be set to 0). If the external I/O device

tries to get/put data from/to internal memory or registers, this endian control can be used with no problem. For

example, if the external print ASIC tries to get data from the internal bit rotation block through DMA 2, this endian

control can be used with no problem. If the external print ASIC tries to get data from the external memory through

DMA 2, this endian control can’t be used. In this case, the right endian structure should be prepared when the

data is put into the external memory through the other process and DMA channels.

MFC2000 Datasheet(PDF) 124 Page - List of Unclassifed Manufacturers

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