r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 191

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

8.2.6
CRB is a 16-bit register that designates the number of times data is to be transferred by the DTC in
block transfer mode. It functions as a 16-bit transfer counter (1 to 65,536) that is decremented by 1
every time a block of data is transferred, and bit DTCEn (n = 15 to 0) corresponding to the
activation source is cleared and then an interrupt is requested to the CPU when the count reaches
H'0000. The transfer count is 1 when CRB = H'0001, 65,535 when CRB = H'FFFF, and 65,536
when CRB = H'0000.
CRB is not available in normal and repeat modes and cannot be accessed directly by the CPU.
*
: Undefined
Initial value:
R/W:
Bit:
DTC Transfer Count Register B (CRB)
15
*
-
14
*
-
13
*
-
12
*
-
11
*
-
10
*
-
9
*
-
8
*
-
7
*
-
Rev. 1.00 Sep. 21, 2007 Page 165 of 1124
Section 8 Data Transfer Controller (DTC)
6
*
-
5
*
-
4
*
-
3
*
-
REJ09B0402-0100
2
*
-
1
*
-
0
*
-