HD64F2168 Datasheet, PDF (189/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 7 Data Transfer Controller (DTC)
This LSI includes a data transfer controller (DTC). The DTC can be activated by an interrupt or
software, to transfer data.
Figure 7.1 shows a block diagram of the DTC. The DTC's register information is stored in the on-
chip RAM. When the DTC is used, the RAME bit in SYSCR must be set to 1. A 32-bit bus
connects the DTC to addresses H'FFEC00 to H'FFEFFF in on-chip RAM (1 kbyte), enabling 32-
bit/1-state reading and writing of the DTC register information.
7.1 Features
• Transfer is possible over any number of channels
• Three transfer modes
 Normal, repeat, and block transfer modes are available
• One activation source can trigger a number of data transfers (chain transfer)
• Direct specification of 16 Mbytes address space is possible
• Activation by software is possible
• Transfer can be set in byte or word units
• A CPU interrupt can be requested for the interrupt that activated the DTC
• Module stop mode can be set
• DTC operates in high-speed mode even when the LSI is in medium-speed mode
DTCH80CA_020020030700
Rev. 3.00, 03/04, page 149 of 830