D12320VF25V Datasheet, PDF (217/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 7 Data Transfer Controller
Section 7 Data Transfer Controller
7.1 Overview
The chip includes a data transfer controller (DTC). The DTC can be activated for data transfer by
an interrupt or software.
7.1.1 Features
The features of the DTC are:
• Transfer possible over any number of channels
⎯ Transfer information is stored in memory
⎯ One activation source can trigger a number of data transfers (chain transfer)
⎯ Chain transfer execution can be set after data transfer (when counter = 0)
• Selection of transfer modes
⎯ Normal, repeat, and block transfer modes available
⎯ Incrementing, decrementing, and fixing of source and destination addresses can be selected
• Direct specification of 16-Mbyte address space possible
⎯ 24-bit transfer source and destination addresses can be specified
• Transfer can be set in byte or word units
• A CPU interrupt can be requested for the interrupt that activated the DTC
⎯ An interrupt request can be issued to the CPU after one data transfer ends
⎯ An interrupt request can be issued to the CPU after all the specified data transfers have
ended
• Activation by software is possible
• Module stop mode can be set
⎯ The initial setting enables DTC registers to be accessed. DTC operation is halted by setting
module stop mode
Rev.7.00 Feb. 14, 2007 page 183 of 1108
REJ09B0089-0700