Section 7
Data Transfer Controller (DTC)
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REJ09B0311-0200
1st data transfer
information
2nd data transfer
information
Transfer information
located on the on-chip memory
Chain transfer
(counter = 0)
Input circuit
Input buffer
Upper 8 bits of DAR
Figure 7.16 Chain Transfer when Counter = 0
7.8 Interrupt
Sources
An interrupt request is issued to the CPU when the DTC finishes the specified number of data
transfers or a data transfer for which the DISEL bit was set to 1. In the case of interrupt activation,
the interrupt set as the activation source is generated. These interrupts to the CPU are subject to
CPU mask level and priority level control in the interrupt controller.
7.9 Usage
Notes
7.9.1
Module Stop State Setting
Operation of the DTC can be disabled or enabled using the module stop control register. The
initial setting is for operation of the DTC to be enabled. Register access is disabled by setting
module stop state. Module stop state cannot be set while the DTC is activated. For details, see
section 18, Power-Down States.
Содержание H8SX/1650
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