H8SXSLASH1663 datasheet(381/1158 Pages) RENESAS

381 / 1158 page

Section 7 DMA Controller (DMAC)

Rev.1.00 Jun. 07, 2006 Page 329 of 1102

REJ09B0294-0100

Bit

Bit Name

Initial

Value

R/W

Description

DTE

R/W

Data Transfer Enable

Enables/disables a data transfer for the corresponding

channel. When this bit is set to 1, it indicates that the

DMAC is in operation.

Setting this bit to 1 starts a transfer when the auto-

request is selected. When the on-chip module interrupt

or external request is selected, a transfer request after

setting this bit to 1 starts the transfer. While data is

being transferred, clearing this bit to 0 stops the

transfer.

In block transfer mode, if writing 0 to this bit while data is

being transferred, this bit is cleared to 0 after the current

1-block size data transfer.

If an event which stops (sustains) a transfer occurs

externally, this bit is automatically cleared to 0 to stop

the transfer.

Operating modes and transfer methods must not be

changed while this bit is set to 1.

0: Disables a data transfer

1: Enables a data transfer (DMA is in operation)

[Clearing conditions]

• When the specified total transfer size of transfers is

completed

• When a transfer is stopped by an overflow interrupt

by a repeat size end

• When a transfer is stopped by an overflow interrupt

by an extended repeat size end

• When a transfer is stopped by a transfer size error

interrupt

• When clearing this bit to 0 to stop a transfer

In block transfer mode, this bit changes after the current

block transfer.

• When an address error or an NMI interrupt is

requested

• In the reset state or hardware standby mode

H8SX/1663 Datenblatt(PDF) 381 Page - Renesas Technology Corp

H8SX/1663 Datenblatt(HTML) 381 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datenblatt Download

Link URL