HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 268

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 7 DMA Controller (Not Supported in the H8S/2321)
7.3.3
ETCR is a 16-bit readable/writable register that specifies the number of transfers. The function of
this register is different in normal mode and in block transfer mode.
ETCR is not initialized by a reset or in standby mode.
Normal Mode
ETCRA
In normal mode, ETCRA functions as a 16-bit transfer counter. ETCRA is decremented by 1 each
time a transfer is performed, and transfer ends when the count reaches H'0000. ETCRB is not used
at this time.
ETCRB
ETCRB is not used in normal mode.
Rev.6.00 Sep. 27, 2007 Page 238 of 1268
REJ09B0220-0600
Transfer Counter
Bit
Initial value :
R/W
Execute Transfer Count Register (ETCR)
: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
:
15
*
14
*
13
*
12
*
11
*
10
*
9
*
8
*
7
*
6
*
5
*
4
*
3
*
2
*
*: Undefined
1
*
0
*