Activation Sources; Activation By Internal Interrupt Request; Table 7.3 Dmac Activation Sources - Renesas H8S/2368 Series Hardware Manual

7.4

Activation Sources

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 DMAC Activation Sources
Activation Source
Internal ADI
interrupts
TXI0
RXI0
TXI1
RXI1
TGI0A
TGI1A
TGI2A
TGI3A
TGI4A
TGI5A
DREQ pin falling edge input
External
requests
DREQ pin low-level input
Auto-request
Legend
Ο:
Can be specified
X: Cannot be specified
7.4.1

Activation by Internal Interrupt Request

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. 2.00, 05/03, page 226 of 820
Short Address Mode
Channels Channels
0A and 1A 0B and 1B
Ο Ο
Ο Ο
Ο Ο
Ο Ο
Ο Ο
Ο Ο
Ο Ο
Ο Ο
Ο Ο
Ο Ο
Ο Ο
Ο
X
Ο
X
X X
Full Address Mode
Block
Normal Transfer
Mode Mode
Ο
X
Ο
X
Ο
X
Ο
X
Ο
X
Ο
X
Ο
X
Ο
X
Ο
X
Ο
X
Ο
X
Ο Ο
Ο Ο
Ο
X