r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 193
r5f71374an80fpv
Manufacturer Part Number
r5f71374an80fpv
Description
32-bit Risc Microcomputer Superh?? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R5F71374AN80FPV.pdf
(1154 pages)
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8.2.8
DTCCR specifies transfer information read skip.
Bit
7 to 5
4
3
Bit Name
RRS
RCHNE
DTC Control Register (DTCCR)
Note:
*
Initial value:
Writing 0 to this bit after reading it as 1 clears the flag and is the only allowed way.
Initial
Value
All 0
0
0
R/W:
Bit:
R/W
R
R/W
R/W
R
7
0
-
R
6
0
-
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
DTC Transfer Information Read Skip Enable
Controls the vector address read and transfer information
read. A DTC vector number is always compared with the
vector number for the previous activation. If the vector
numbers match and this bit is set to 1, the DTC data
transfer is started without reading a vector address and
transfer information. If the previous DTC activation is a
chain transfer, the vector address read and transfer
information read are always performed.
However, when the DTPR bit in the bus function
extending register (BSCEHR) is set to 1, transfer
information read skip is not performed regardless of the
setting of this bit.
0: Transfer read skip is not performed.
1: Transfer read skip is performed when the vector
Chain Transfer Enable After DTC Repeat Transfer
Enables/disables the chain transfer while transfer counter
(CRAL) is 0 in repeat transfer mode.
In repeat transfer mode, the CRAH value is written to
CRAL when CRAL is 0. Accordingly, chain transfer may
not occur when CRAL is 0. If this bit is set to 1, the chain
transfer is enabled when CRAH is written to CRAL.
0: Disables the chain transfer after repeat transfer
1: Enables the chain transfer after repeat transfer
numbers match.
R
5
0
-
R/W
RRS RCHNE
4
0
R/W
3
0
Rev. 1.00 Sep. 21, 2007 Page 167 of 1124
Section 8 Data Transfer Controller (DTC)
R
2
0
-
R
1
0
-
R/(W)*
ERR
0
0
REJ09B0402-0100
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