D12320VF25IV Datasheet, PDF (354/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 8 Data Transfer Controller
Figure 8.2 shows a flowchart of DTC operation, and table 8.2 summarizes the chain transfer
conditions (combinations for performing the second and third transfers are omitted).
Start
Read DTC vector
Next transfer
Read register information
Data transfer
Write register information
CHNE = 1?
Yes
No
Transfer counter = 0
or DISEL = 1?
Yes
No
CHNS = 0?
Yes
No
Transfer
counter = 0? _Yes
No
DISEL = 1?
Yes
No
Clear activation flag
Clear DTCER
End
Interrupt exception
handling
Figure 8.2 Flowchart of DTC Operation
Rev.6.00 Sep. 27, 2007 Page 322 of 1268
REJ09B0220-0600