HD6432670 Hitachi, HD6432670 Datasheet - Page 328

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

7.4
DMAC activation sources consist of internal interrupt requests, external requests, and auto-
requests. The DMAC activation sources that can be specified depend on the transfer mode and
channel, as shown in table 7.3.
Table 7.3
Activation Source
Internal
interrupts
External
requests
Auto-request
Legend
X:
7.4.1
An interrupt request selected as a DMAC activation source can also simultaneously generate an
interrupt request for the CPU or DTC. For details, see section 5, Interrupt Controller.
With activation by an internal interrupt request, the DMAC accepts the interrupt request
independently of the interrupt controller. Consequently, interrupt controller priority settings are
irrelevant.
Rev. 2.0, 04/02, page 282 of 906
:
Can be specified
Cannot be specified
Activation Sources
Activation by Internal Interrupt Request
ADI
TXI0
RXI0
TXI1
RXI1
TGI0A
TGI1A
TGI2A
TGI3A
TGI4A
TGI5A
DMAC Activation Sources
pin falling edge input
pin low-level input
Short Address Mode
Channels
0A and 1A
X
X
X
Channels
0B and 1B
X
Normal
Mode
X
X
X
X
X
X
X
X
X
X
X
Full Address Mode
Block
Transfer
Mode
X