h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 214

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 7 Data Transfer Controller [H8S/2138 Group]
7.1.2
Figure 7.1 shows a block diagram of the DTC.
The DTC’s register information is stored in the on-chip RAM * . A 32-bit bus connects the DTC to
the on-chip RAM (1 kbyte), enabling 32-bit/1-state reading and writing of the DTC register
information.
Note: * When the DTC is used, the RAME bit in SYSCR must be set to 1.
Rev. 4.00 Jun 06, 2006 page 160 of 1004
REJ09B0301-0400
Interrupt
request
Legend:
MRA, MRB: DTC mode registers A and B
CRA, CRB: DTC transfer count registers A and B
SAR:
DAR:
DTCERA to DTCERE: DTC enable registers A to E
DTVECR:
Block Diagram
Interrupt controller
CPU interrupt
request
DTC source address register
DTC destination address register
DTC vector register
Figure 7.1 Block Diagram of DTC
DTC
Internal address bus
Internal data bus
On-chip
RAM