SH7014 datasheet(653/754 Pages) RENESAS

653 / 754 page

Appendix A On-Chip Supporting Module Registers

Rev.5.00 Sep. 27, 2007 Page 619 of 716

REJ09B0398-0500

DMAC

Bit

Name

Value

Description

DMATCR—specified transfer count not ended

(initial value)

Clear condition: 0 write after TE = 1 read,

Power-on reset, standby mode

Transfer End Flag (TE)

DMATCR specified number of transfers

completed

Operation of the corresponding channel

disabled

(initial value)

DMAC Enable (DE)

Operation of the corresponding channel

enabled

DMAC Operation Register (DMAOR)

H'FFFF86B0

8/16/32

Bit

Item

Bit name

―

Initial value

R/W

Item

Bit name

―

NMIF

DME

Initial value

R/W

R/(W)

R/(W)*

R/W*

Note:

0 write only is valid after 1 is read.

Bit

Name

Value

Description

No address error, DMA transfer enabled (initial value)

Clearing condition: Write AE = 0 after reading AE = 1

Address Error Flag (AE)

Address error, DMA transfer disabled

Setting condition: Address error due to DMAC

No NMI interrupt, DMA transfer enabled

(initial value)

Clearing condition: Write NMIF = 0 after reading NMIF

= 1

NMI Flag (NMIF)

NMI has occurred, DMC transfer prohibited

Set condition: NMI interrupt occurrence

Disable operation on all channels

(initial value)

DMAC Master Enable (DME)

Enable operation on all channels

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