HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 226

• Manufacturer Part Number: HD6417034B
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 9 Direct Memory Access Controller (DMAC)
Rev. 7.00 Jan 31, 2006 page 200 of 658
REJ09B0272-0700
Transfer request
Figure 9.5 Example of Changes in Priority in External-Pin Round-Robin Mode
(6) Channel 0
(1) Channels
0 and 1
Waiting channel(s)
0
None
None
(2) Channel 1
(3) Channel 1
(4) Channel 0
(5) Channel 0
(7) Channel 0
(8) Channel 0
DMAC operation
transfer starts
transfer ends
transfer starts
transfer ends
transfer starts
transfer ends
does not change
Priority order
Priority order
Priority order
changes
changes
transfer request
Waiting for
Channel priority
3
3
3
3
2
2
2
2
1
0
1
1
0
1
0
0