HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 348

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 7 DMA Controller (DMAC)
A block diagram of the DMAC is shown in figure 7.1.
Rev.7.00 Mar. 18, 2009 page 280 of 1136
REJ09B0109-0700
Internal interrupts
External pins
Interrupt signals
Legend:
DMAWER : DMA write enable register
DMATCR : DMA terminal control register
DMABCR : DMA band control register (for all channels)
DMACR
MAR
IOAR
ETCR
DMTEND0A
DMTEND0B
DMTEND1A
DMTEND1B
TGI0A
TGI1A
TGI2A
TGI3A
TGI4A
TGI5A
TXI0
RXI0
TXI1
RXI1
ADI
DREQ0
DREQ1
TEND0
TEND1
DACK0
DACK1
: DMA control register
: Memory address register
: I/O address register
: Execute transfer count register
Data buffer
Control logic
Figure 7.1 Block Diagram of DMAC
DMABCR
DMAWER
DMATCR
DMACR0A
DMACR0B
DMACR1A
DMACR1B
Internal address bus
Internal data bus
MAR_0AH
MAR_0BH
MAR_1AH
MAR_1BH
Address buffer
Processor
ETCR_0A
ETCR_0B
ETCR_1A
ETCR_1B
IOAR_0A
IOAR_0B
IOAR_1A
IOAR_1B
MAR_0AL
MAR_0BL
MAR_1AL
MAR_1BL