HD6413007F20 Datasheet, PDF (224/798 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

7. DMA Controller
Repeat mode
Bit
7
6
5
4
3
2
1
0
Initial value
Read/Write
Bit
Undetermined
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
ETCRH
Transfer counter
7
6
5
4
3
2
1
0
Initial value
Read/Write
Undetermined
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
ETCRL
Initial count
In repeat mode, ETCRH functions as an 8-bit transfer counter and ETCRL holds the initial transfer
count. ETCRH is decremented by 1 each time one transfer is executed. When ETCRH reaches
H'00, the value in ETCRL is reloaded into ETCRH and the same operation is repeated.
The ETCRs are not initialized by a reset or in standby mode.
Rev.5.00 Sep. 12, 2007 Page 194 of 764
REJ09B0396-0500