mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 192

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

Instruction Cache
9.2 PROGRAMMING THE INSTRUCTION CACHE
Three special-purpose registers can be used to control the instruction cache with the mfspr
and mtspr instructions:
These registers are privileged and any attempt to access them while the core is in the
problem state (MSR
• Instruction cache control and status register (IC_CST)
• Instruction cache address register (IC_ADR)
• Instruction cache data port register (read-only) (IC_DAT)
INSTRUCTION
TO CORE
32
BYPASS
DATA
MUX
2->1
PR
Figure 9-2. Cache Data Path Block Diagram
=1) results in a program interrupt.
Freescale Semiconductor, Inc.
ADDRESS [28:29]
32
For More Information On This Product,
SELECT
WORD
MUX
4->1
MPC823 REFERENCE MANUAL
Go to: www.freescale.com
128
ADDRESS [22:27]
STREAM
MUX
2->1
HIT
DECODER
SET
128
BUFFER
WORDS
LINE
4
128
CACHE
ARRAY
2K
128
128
INTERNAL BUS DATA
BUFFER
WORDS
BURST
4
32
MOTOROLA