h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 222

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 8 Data Transfer Controller (DTC)
8.3.3
Figure 8.4 shows the correspondence between DTC vector addresses and register information.
Table 8.4 shows the correspondence between activation and vector addresses. When the DTC is
activated by software, the vector address is obtained from: H'0400 + (DTVECR[6:0] << 1) (where
<< 1 indicates a 1-bit left shift). For example, if DTVECR is H'10, the vector address is H'0420.
The DTC reads the start address of the register information from the vector address set for each
activation source, and then reads the register information from that start address. The register
information can be placed at predetermined addresses in the on-chip RAM. The start address of
the register information should be an integral multiple of four.
The configuration of the vector address is the same in both normal * and advanced modes, a 2-byte
unit being used in both cases. These two bytes specify the lower bits of the address in the on-chip
RAM.
Note: * Not available in the H8S/2646 Group.
Rev. 5.00 Sep 22, 2005 page 196 of 1136
REJ09B0257-0500
Figure 8.4 Correspondence between DTC Vector Address and Register Information
DTC vector
address
DTC Vector Table
Register information
start address
Chain transfer
Register information