Datasheet

Section 7 DMA Controller (DMAC)
R01UH0309EJ0500 Rev. 5.00 Page 351 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
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
Short Address Mode Full Address Mode
Activation Source
Channels
0A and 1A
Channels
0B and
1B
Normal
Mode
Block
Transfer
Mode
ADI0 ×
TXI0 ×
RXI0 ×
TXI1 ×
RXI1 ×
TGI0A ×
TGI1A
×
TGI2A ×
TGI3A ×
TGI4A ×
TGI5A ×
USBINTN0 × ×
Internal
interrupts
USBINTN1 × ×
DREQ pin falling edge input × External
requests
DREQ pin low-level input ×
Auto-request × × ×
[Legend]
: Can be specified
×: Cannot be specified