H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 284

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 7 DMA Controller (DMAC)
Figure 7.11 illustrates operation in normal mode.
Transfer requests (activation sources) are external requests and auto-requests.
With auto-request, the DMAC is only activated by register setting, and the specified number of
transfers are performed automatically. With auto-request, cycle steal mode or burst mode can be
selected. In cycle steal mode, the bus is released to another bus master each time a transfer is
performed. In burst mode, the bus is held continuously until transfer ends.
Rev. 3.00 Sep 15, 2006 page 250 of 988
REJ09B0330-0300
Address T
Address B
Notes:
Address
Address
Address
Address
Where :
T
T
B
B
L
L
N
A
A
A
B
A
B
A
B
= L
= L
= L
= L
= Value set in MARA
= Value set in MARB
= Value set in ETCRA
A
B
A
B
+ SAIDE
+ DAIDE
•
•
(–1)
(–1)
Figure 7.11 Operation in Normal Mode
SAID
DAID
•
•
(2
(2
DTSZ
DTSZ
•
•
(N–1))
(N–1))
Transfer
Address T
Address B
B
B