Device
modules
AXI2OCP
I2Async
MPU
clock
generator
Level
shift
L3
T2Async
MOCP
(P)
AXI
AXI
MOCP
(P)
NEON
ARM Cortex-A8
MPU_INTC_IRQ
MPU_INTC_FIQ
MPU subsystem
sys_nirq
Interrupts
INTC
PRCM
Device
CORE_RST
MPU_CLK
L3_ICLK
MPU_RST
Non-OCP
NEON_RST
MPU_MST
ANDBY
ARM Cortex-A8 MPU Subsystem
Figure 3-2. Microprocessor Unit (MPU) Subsystem Signal Interface
3.1.3 MPU Subsystem Clock and Reset Distribution
3.1.3.1
Clock Distribution
The MPU subsystem includes an embedded DPLL which sources the clock for the ARM Cortex-A8
processor. A clock divider within the subsystem is used for deriving the clocks for other internal modules.
167
SPRUH73H – October 2011 – Revised April 2013
ARM MPU Subsystem
Copyright © 2011–2013, Texas Instruments Incorporated