DSP56857 datasheet(553/662 Pages) FREESCALE

tên linh kiện	DSP56857

Giải thích chi tiết về linh kiện	Digitial Signal Controller

PDF	662 Pages

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nhà sản xuất	FREESCALE [Freescale Semiconductor, Inc]

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Appendix B - Programmer’s Sheets, Rev. 4

Freescale Semiconductor

B-51

7 of 8

DMA

DMA Transfer Control Register (DMATC)

Bits

Name

Description

DMAON

Direct Memory Access On

This bit enables/disables the DMA operation.

DMA operation is disabled

DMA operation is enabled

INTRON

Interrupt On

This bit enables/disables the DMA interrupt operation

DMA interrupt operation is disabled

DMA interrupt operation is enabled

INTRPEND

Interrupt Pending

This is the DMA interrupt pending bit

DMA interrupt is not pending

DMA interrupt is pending

DATASIZE

Data Size

This bit defines the data size of the DMA transfers

DMA transfers are performed in bytes (8 bits)

DMA transfers are performed in words (16 bits)

DMA Transfer

Control Register

(DMATC)

Base + $0

Bits

Read

DMA_ON INTR_ON

INTR_PEND DATA_SIZE

PERIPH SEL

SS/M

DS/M

Write

Reset

00000

denotes Reserved Bits

See the following page for continuation of this register

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