HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 470

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 10
Figure 10.1 shows the block diagram of the DMAC.
Rev. 3.00 Jan. 18, 2008 Page 408 of 1458
REJ09B0033-0300
acknowledge-
DACK0, DACK1
TEND0, TEND1
DREQ0, DREQ1
I/O (memory
mapped)
External
External
External
External
I/O (with
ment)
ROM
RAM
DMA transfer acknowledge signal
On-chip peripheral
Direct Memory Access Controller (DMAC)
On-chip
memory
module
Interrupt controller
request signal
DMA transfer
Figure 10.1
Bus state
controller
DEIn
Block Diagram of DMAC
interface
Register
Request
Iteration
Start-up
Bus
control
control
control
priority
control
[Legend]
SARn:
DARn:
DMATCRn:
CHCRn:
DMAOR:
DMARS0 to
DMARS2:
DEIn:
n:
DMAC module
DMA source address register
DMA destination address register
DMA transfer count register
DMA channel control register
DMA operation register
DMA extended resource selector 0 to 2
DMA transfer-end interrupt request to the CPU
0, 1, 2, 3, 4, 5
DMARS0 to
DMATCRn
DMARS2
DMAOR
CHCRn
SARn
DARn