TCC76 Datasheet, PDF (83/259 Pages) List of Unclassifed Manufacturers – 32-bit RISC Microprocessor For Digital Media Player

TCC76x
Specification Rev. 0.07
32-bit RISC Microprocessor for Digital Media Player
February 23, 2005
INTERRUPT CONTROLLER
5 INTERRUPT CONTROLLER
5.1 Overview
The following figure represents the block diagram of interrupt controller. Interrupt
controller can manage up to 19 interrupt sources. In the TCC76x, there are four
external interrupt sources. The polarity and edge of the external interrupts are all
programmable. There are four dedicated noise filter for each external interrupt source.
There are two types of interrupt in ARM940T; IRQ type, FIQ type.
Interrupt controller can select these two types for each interrupt source individually.
The WakeUp Event control logic is provided to generate fully asynchronous wakeup
signal for Power Down Mode or IDLE Mode.
Internal
Interrupt Sources
INTIN[18:4]
External
Interrupt Sources
EXTIN[3:0]
WakeUp
Event
(Asynchronous)
Sync
Noise
Filter
ICFG
IREQ
CREQ
MREQ
IEN
IRQSEL
Edge/Level
Selector
to Clock Generator
Wakeup Control
IRQ Flag
nIRQ/nFIQ
Generator
nIRQ
to ARM940T
nFIQ
Figure 5.1 Interrupt Controller Block Diagram
Preliminary
5-1