32186 datasheet(268/1032 Pages) RENESAS

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DMAC

9-22

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

DMA8 Channel Control Register 0 (DM8CNT0)

<Address: H’0080 0448>

23456

SADSL8 DADSL8

MDSEL8 TREQF8

REQSL8

TENL8

TSZSL8

00000000

Bit Name

Function

MDSEL8

0: Normal mode

DMA8 transfer mode select bit

1: Ring buffer mode

TREQF8

0: Transfer not requested

R(Note 1)

DMA8 transfer request flag bit

1: Transfer requested

2, 3

REQSL8

00: Software start

DMA8 transfer request source select bit

01: MJT (input event bus 0)

10: SIO3_RXD (reception completed)

11: Extended DMA8 transfer request source selected

(DMA8 Channel Control Register 1)

TENL8

0: Disable transfer

DMA8 transfer enable bit

1: Enable transfer

TSZSL8

0: 16 bits

DMA8 transfer size select bit

1: 8 bits

SADSL8

0: Fixed

DMA8 source address direction select bit

1: Increment

DADSL8

0: Fixed

DMA8 destination address direction select bit

1: Increment

Note 1: Only writing "0" is effective. Writing "1" has no effect; the bit retains the value it had before the write.

9.2 DMAC Related Registers

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