HD6432646 Hitachi, HD6432646 Datasheet - Page 221

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

8.2.3
SAR is a 24-bit register that designates the source address of data to be transferred by the DTC.
For word-size transfer, specify an even source address.
8.2.4
Bit
Initial value
R/W
DAR is a 24-bit register that designates the destination address of data to be transferred by the
DTC. For word-size transfer, specify an even destination address.
8.2.5
CRA is a 16-bit register that designates the number of times data is to be transferred by the DTC.
In normal mode, the entire CRA functions as a 16-bit transfer counter (1 to 65,536). It is
decremented by 1 every time data is transferred, and transfer ends when the count reaches H'0000.
Bit
Initial value
R/W
Bit
Initial value
R/W
DTC Source Address Register (SAR)
DTC Destination Address Register (DAR)
DTC Transfer Count Register A (CRA)
:
:
:
:
:
:
:
:
:
23
15
—
—
*
*
23
—
*
22
14
—
—
*
*
22
—
*
21
13
—
—
*
*
21
—
*
20
12
—
—
*
20
*
CRAH
—
*
19
11
—
—
*
19
*
—
*
10
—
*
—
9
*
—
8
*
—
7
*
—
6
*
—
5
*
—
—
—
4
4
*
*
4
CRAL
*
—
—
—
3
3
*
3
*
*
—
—
—
2
2
*
2
*
*
*: Undefined
*: Undefined
*: Undefined
—
—
—
1
1
1
*
*
*
—
—
—
187
0
0
0
*
*
*