h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 205
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h8s-2158
Manufacturer Part Number
h8s-2158
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2158.pdf
(927 pages)
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7.4
Locate the register information in the on-chip RAM (addresses: H'(FF)EC00 to H'(FF)EFFF).
Register information should be located at an address that is a multiple of four within the range.
The method for locating the register information in address space is shown in figure 7.3. Locate
MRA, SAR, MRB, DAR, CRA, and CRB, in that order, from the start address of the register
information. In the case of chain transfer, register information should be located in consecutive
areas as shown in figure 7.3, and the register information start address should be located at the
vector address corresponding to the interrupt source in the DTC vector table. The DTC reads the
start address of the register information from the vector table set for each activation source, and
then reads the register information from that start address.
When the DTC is activated by software, the vector address is obtained from: H'0400 +
(DTVECR[6:0]
The configuration of the vector address is the same in both normal and advanced modes; a 2-byte
unit is used in both cases. Specify the lower two bits of the register information start address.
Register
information
start address
Chain
transfer
Location of Register Information and DTC Vector Table
Figure 7.3 DTC Register Information Location in Address Space
2). For example, if DTVECR is H'10, the vector address is H'0420.
MRA
MRA
MRB
MRB
0
CRA
CRA
Lower address
1
4 bytes
DAR
DAR
SAR
SAR
2
CRB
CRB
Section 7 Data Transfer Controller (DTC)
Rev. 3.00 Jan 25, 2006 page 153 of 872
3
Register information
Register information
for 2nd transfer in
chain transfer
REJ09B0286-0300
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