r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 355

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

•
Bit
7
6
5
4
DMABCRL
Bit Name
DTE1B
DTE1A
DTE0B
DTE0A
Initial Value
0
0
0
0
R/W
R/W
R/W
R/W
R/W
Description
Data Transfer Enable 1B
Data Transfer Enable 1A
Data Transfer Enable 0B
Data Transfer Enable 0A
If the DTE bit is cleared to 0 when DTIE = 1, the
DMAC regards this as indicating the end of a
transfer, and issues a transfer end interrupt
request to the CPU or DTC.
When DTE = 0, data transfer is disabled and the
DMAC ignores the activation source selected by
the DTF3 to DTF0 bits in DMACR.
When DTE = 1, data transfer is enabled and the
DMAC waits for a request by the activation source
selected by the DTF3 to DTF0 bits in DMACR.
When a request is issued by the activation source,
DMA transfer is executed.
[Clearing conditions]
•
•
•
[Setting condition]
When 1 is written to the DTE bit after reading DTE
= 0
been completed in a transfer mode other than
repeat mode
suspend the transfer, or for a similar reason
When initialization is performed
When the specified number of transfers have
When 0 is written to the DTE bit to forcibly
Rev. 1.00 Sep. 19, 2008 Page 325 of 1342
Section 7 DMA Controller (DMAC)
REJ09B0467-0100