HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 328

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

9.5
DMAC has an on-chip compare match timer (CMT) to generate DMA transfer request. The CMT
has 16-bit counter. Figure 9.26 shows a CMT block diagram.
9.5.1
The CMT has the following features:
Rev. 4.00, 03/04, page 282 of 660
Four types of counter input clock can be selected
Generate DMA transfer request when compare match occurs.
CMCOR:
Legend
CMCSR:
CMSTR:
CMCNT:
One of four internal clocks (P /4, P /8, P /16, P /64) can be selected.
Compare Match Timer (CMT)
Feature
Compare match timer start register
Compare match timer control/status register
Compare match timer constant register
Compare match timer counter
Control circuit
Figure 9.26 CMT Block Diagram
Module bus
P /4
Clock selection
P /8
P /16
P /64
Internal bus
interface
Bus
CMT