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Introduction
8.1.4 ARM A8—Interrupt Controller Integration
The interrupt controller (INTC) is the interface between the many incoming interrupts and the two
interrupt inputs of the ARM A8. The two interrupts inputs to ARM are FIQ and IRQ.
the integration of the interrupt controller in the ARM A8 subsystem.
The ARM A8 subsystem INTC is directly connected to the ARM A8 by an ARM peripheral port.
Consequently, the ARM A8 subsystem INTC is accessible and visible only by the A8.
Functional
Clock
Interrupts
904
Interrupt Controller
Preliminary
Figure 8-3. ARM A8 Subsystem INTC Integration
Control
Module
SCR Reset
Value
Secure
INTERRUPT
Mask N
CONTROLLER
© 2011, Texas Instruments Incorporated
(includes L2 Cache
ARM_IRQ
ARM_FIQ
OCP Clock
OCP
www.ti.com
Figure 8-3
shows
Cortex A8
AXI-OCP
Bridge
L3 OCP
SPRUGX9 – 15 April 2011
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