HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 302

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

Rev. 4.00, 03/04, page 256 of 660
Notes: 1.
2.
3.
(SAR, DAR, DMATCR, CHCR, DMAOR)
DEI interrupt request (when IE = 1)
DMATCR – 1
In auto-request mode, transfer begins when NMIF and TE are all 0 and the DE and DME bits
,4-3
,4-3
are set to 1.
= level detection in burst mode (external request) or cycle-steal mode.
= edge detection in burst mode (external request), or auto-request mode in burst mode.
DE, DME = 1 and
Transfer (1 transfer unit);
Transfer request
DE = 0 or DME
NMIF, TE = 0?
DMATCR = 0?
Initial settings
Yes
Yes
NMIF = 1 or
Yes
Yes
Transfer end
occurs?*
Start
= 0?
DMATCR, SAR and DAR
updated
1
Figure 9.2 DMAC Transfer Flowchart
No
No
No
No
Transfer aborted
DE = 0 or DME
Normal end
NMIF = 1 or
Yes
*
3
= 0?
,4-3
transfer request mode,
detection selection
Bus mode,
No
system
*
2