E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 302

• Manufacturer Part Number: E62655RUSB
• Description: EMULATOR BASE H8S/2655R W/USB
• Manufacturer: Renesas Electronics America
• Type: Microcontrollerr

Specifications of E62655RUSB

• Contents: E6000 Emulator Unit and 4 Logic Probes
• For Use With/related Products: H8S/2655R
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Section 7 DMA Controller
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. 5.00 Sep 14, 2006 page 272 of 1060
REJ09B0331-0500
Address T
Address B
Legend:
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