MPC8544COMEDEV Freescale Semiconductor, MPC8544COMEDEV Datasheet - Page 271
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MPC8544COMEDEV
Manufacturer Part Number
MPC8544COMEDEV
Description
KIT DEV EXPRESS MPC8544COM
Manufacturer
Freescale Semiconductor
Type
MPUr
Datasheets
1.MPC8544VTALF.pdf
(117 pages)
2.MPC8544VTALF.pdf
(2 pages)
3.MPC8544VTALF.pdf
(1340 pages)
Specifications of MPC8544COMEDEV
Contents
Board
For Use With/related Products
MPC8544
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 271 of 1340
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Chapter 7
L2 Look-Aside Cache/SRAM
This chapter describes the organization of the on-chip L2/SRAM, cache coherency rules, cache line
replacement algorithm, cache control instructions, and various cache operations. It also describes the
interaction between the L2/SRAM and the e500 core complex.
7.1
The integrated 256-Kbyte L2 cache is organized as 1024 eight-way sets of 32-byte cache lines based on
36-bit physical addresses, as shown in
The SRAM can be configured with memory-mapped registers as externally accessible memory-mapped
SRAM in addition to or instead of cache. The L2 cache can operate in the following modes, described in
Section 7.2, “L2 Cache and SRAM
Freescale Semiconductor
•
•
•
Full cache mode (256-Kbyte cache).
Full memory-mapped SRAM mode (256-Kbyte SRAM mapped as a single 256-Kbyte block or
two 128-Kbyte blocks)
Partial SRAM and partial cache mode, in which one eighth, one quarter, or one half the total
on-chip memory can be allocated to 1 or 2 SRAM regions.
L2 Cache Overview
MPC8544E PowerQUICC III Integrated Host Processor Family Reference Manual, Rev. 1
Independently programmable
WR IN
as L2 cache or SRAM
Four 64-Kbyte banks
L2 Cache/SRAM
256-Kbyte
(8-way)
DOUT
Figure 7-1. L2 Cache/SRAM Configuration
Organization”:
RD IN
Figure
128
7-1.
128
64
32-Kbyte L1
Data Cache
e500 Core Complex
Core Complex Bus
Coherency Module
RD1
e500 Core
RD2
Instruction Cache
32-Kbyte L1
WR
7-1
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