HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 478
HD6417320
Manufacturer Part Number
HD6417320
Description
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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Section 10
Rev. 3.00 Jan. 18, 2008 Page 416 of 1458
REJ09B0033-0300
Bit
7
6
5
4
3
2
Bit Name
DL
DS
TB
TS1
TS0
IE
Direct Memory Access Controller (DMAC)
Initial
Value
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Descriptions
DREQ Level and DREQ Edge Select
Specify the detecting method of the DREQ pin input and
the detecting level.
These bits are valid only in CHCR_0 and CHCR_1.
These bits are always reserved and read as 0 in CHCR_2
to CHCR_5. The write value should always be 0.
In channels 0 and 1, also, if the transfer request source is
specified as an on-chip peripheral module or if an auto-
request is specified, these bits are invalid.
00: DREQ detected in low level
01: DREQ detected at falling edge
10: DREQ detected in high level
11: DREQ detected at rising edge
Transfer Bus Mode
Specifies the bus mode when DMA transfers data.
0: Cycle steal mode
1: Burst mode
Transfer Size 1, 0
Specify the size of data to be transferred.
Select the size of data to be transferred when the source
or destination is an on-chip peripheral module register of
which transfer size is specified.
00: Byte size
01: Word size (2 bytes)
10: Longword size (4 bytes)
11: 16-byte unit (four longword transfers)
Interrupt Enable
Specifies whether or not an interrupt request is generated
to the CPU at the end of the DMA transfer. Setting this bit
to 1 generates an interrupt request (DEI) to the CPU
when the TE bit is set to 1.
0: Interrupt request is disabled.
1: Interrupt request is enabled.
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