32186 datasheet(270/1032 Pages) RENESAS

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DMAC

9-24

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

DMA9 Channel Control Register 0 (DM9CNT0)

<Address: H’0080 0458>

123456

SADSL9 DADSL9

MDSEL9 TREQF9

REQSL9

TENL9

TSZSL9

00000000

Bit Name

Function

MDSEL9

0: Normal mode

DMA9 transfer mode select bit

1: Ring buffer mode

TREQF9

0: Transfer not requested

R(Note 1)

DMA9 transfer request flag bit

1: Transfer requested

2, 3

REQSL9

00: Software start

DMA9 transfer request source select bit

01: SIO3_TXD (transmit buffer empty)

10: CAN1_S1/S30

11: Extended DMA9 transfer request source selected

(DMA9 Channel Control Register 1)

TENL9

0: Disable transfer

DMA9 transfer enable bit

1: Enable transfer

TSZSL9

0: 16 bits

DMA9 transfer size select bit

1: 8 bits

SADSL9

0: Fixed

DMA9 source address direction select bit

1: Increment

DADSL9

0: Fixed

DMA9 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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