DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 260

• Manufacturer Part Number: DF2211NP24V
• Description: H8S/2200 Series, 2212 Group, USB, RTC, HSS TNP-64B; Vcc= 2.7 to 3.6 volts, Temp= -20 to 75 C; Package: PVQN0064LB-A
• Manufacturer: Renesas Technology / Hitachi Semiconductor

7.5
The sources of interrupts generated by the DMAC are transfer end and transfer break. Table 7.10
shows the interrupt sources and their priority order.
Table 7.10 Interrupt Source Priority Order
Enabling or disabling of each interrupt source is set by means of the DTIE bit for the
corresponding channel in DMABCR, and interrupts from each source are sent to the interrupt
controller independently. The relative priority of transfer end interrupts on each channel is decided
by the interrupt controller, as shown in table 7.10.
Figure 7.24 shows a block diagram of a transfer end/transfer break interrupt. An interrupt is always
generated when the DTIE bit is set to 1 while DTE bit is cleared to 0.
In full address mode, a transfer break interrupt is generated when the DTME bit is cleared to 0
while DTIEB bit is set to 1. In both short address mode and full address mode, DMABCR should
be set so as to prevent the occurrence of a combination that constitutes a condition for interrupt
generation during setting.
Rev.7.00 Dec. 24, 2008 Page 206 of 698
REJ09B0074-0700
Interrupt
Name
DEND0A
DEND0B
DEND1A
DEND1B
Interrupts
Figure 7.24 Block Diagram of Transfer End/Transfer Break Interrupt
DTE/
DTME
Short Address Mode
Interrupt due to end of transfer
on channel 0A
Interrupt due to end of transfer
on channel 0B
Interrupt due to end of transfer
on channel 1A
Interrupt due to end of transfer
on channel 1B
DTIE
Interrupt Source
Full Address Mode
Interrupt due to end of transfer
on channel 0
Interrupt due to break in transfer
on channel 0
Interrupt due to end of transfer
on channel 1
Interrupt due to break in transfer
on channel 1
Transfer end/transfer
break interrupt
Interrupt
Priority Order
High
Low