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Section 8 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 8.1 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 the on-chip RAM (1 kbyte),
enabling 32-bit/1-state reading and writing of the DTC register information.
8.1 Features
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Transfer is possible over any number of channels
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Three transfer modes
Normal, repeat, and block transfer modes are available
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One activation source can trigger a number of data transfers (chain transfer)
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The direct specification of 16-Mbyte address space is possible
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Activation by software is possible
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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
DTCH80BA_010020020900
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