H8SSLASH2214 datasheet(311/936 Pages) RENESAS

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Section 8 Data Transfer Controller (DTC)

Rev.4.00 Sep. 18, 2008 Page 251 of 872

REJ09B0189-0400

Section 8 Data Transfer Controller (DTC)

8.1

Overview

The H8S/2214 Group includes a data transfer controller (DTC). The DTC can be activated by an

interrupt or software, to transfer data.

8.1.1

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)

• Wide range 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 the specified data transfers have

completely 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.

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