HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 507

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

Figure 10.14
Figure 10.15
CKIO
Bus cycle
DREQ
(Overrun 0,
high-level)
DACK
(High-active)
CKIO
Bus cycle
DREQ
(Overrun 1,
high-level)
DACKn
(High-active)
Example of DREQ Input Detection in Cycle Steal Mode Level Detection
CKIO
Bus cycle
DREQ
(Rising edge)
DACK
(High-active)
Example of DREQ Input Detection in Burst Mode Edge Detection
1st acceptance
1st acceptance
Non-sensitive period
CPU
CPU
Burst acceptance
CPU
Non-sensitive period
CPU
CPU
CPU
Non-sensitive period
Section 10
2nd acceptance
DMAC
Non-sensitive period
DMAC
Acceptance started
DMAC
Rev. 3.00 Jan. 18, 2008 Page 445 of 1458
Direct Memory Access Controller (DMAC)
2nd acceptance
CPU
Acceptance started
CPU
DMAC
REJ09B0033-0300