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UM0434 Datasheet(PDF) 192 Page - STMicroelectronics

Part # UM0434
Description  The primary objective of this user?셲 manual is to describe
PDF  390 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM0434 Datasheet(HTML) 192 Page - STMicroelectronics

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UM0434
Memory management unit
193/391
Other hardware assistance features for maintenance of the TLB on the e200z3 are
described in
Chapter : MAS register updates on page 205.”
7.2
Effective to real address translation
This section describes the general principles that guide the PowerPC Book E definition for
memory management and further describes the structure for MMUs defined by the
Freescale Book E implementation standard (EIS) and the e200z3 MMU.
Figure 7 shows the high-level translation flow, showing that because the smallest page size
supported by the e200z3 core complex is 4 Kbytes, the 12 lsbs always index within the page
and are untranslated.
Table 150.
TLB maintenance programming model
Features
Description
Section/page
TLB
Instructions
tlbre
TLB Read Entry instruction
Chapter 7.4 on
page 200
tlbwe
TLB Write Entry instruction
Chapter 7.4 on
page 200
tlbsx rA, rB
TLB Search for Entry instruction
Chapter 7.4 on
page 200
tlbivax rA, rB
TLB Invalidate Entries instruction
Chapter 7.4 on
page 200
tlbsync
TLB Synchronize Invalidations with other masters’
instruction (privileged no-op on the e200z3)
Chapter 7.4 on
page 200
Registers
PID0
Process ID register
Chapter 4.4.2
on page 45
MMUCSR0
MMU control and status register
Chapter 4.16.1
on page 88
MMUCFG
MMU configuration register
Chapter 4.16.2
on page 89
TLB0CFG–TLB1CFG
TLB configuration registers
Chapter 4.16.3
on page 90
MAS0–MAS4, MAS6
MMU assist registers. Note: e200z3 does not
implement MAS5.
Chapter 4.16.4
on page 91
DEAR
Data exception address register
Chapter on
page 57
Interrupts
Instruction TLB miss
exception
Causes instruction TLB error interrupt
Chapter 6.6.15
on page 179
Data TLB miss exception
Causes data TLB error interrupt
Chapter 6.6.14
on page 179
Instruction permission
violation exception
Causes ISI interrupt
Chapter 6.6.4
on page 172
Data permission violation
exception
Causes DSI interrupt
Chapter 6.6.3
on page 171



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