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System Control CoprocessorTable 3-3 Summary of CP15 registers and operations (continued)CRn Op1 CRm Op2Register oroperationSecurity state Reset value PageNSSc2 0-1 Undefined - - - -2 D-TLB CAM readoperation3 D-TLB ATTR readoperation4 D-TLB PA readoperation5 D-HVAB readoperation6 D-Tag readoperation7 D-Data readoperationNA WO - page 3-169NA WO - page 3-169NA WO - page 3-169NA WO - page 3-171NA WO - page 3-173NA WO - page 3-174c3 0-1 Undefined NA - - -2 I-TLB CAM readoperation3 I-TLB ATTR readoperation4 I-TLB PA readoperation5 I-HVAB readoperation6 I-Tag readoperation7 I-Data readoperationNA WO - page 3-169NA WO - page 3-169NA WO - page 3-169NA WO - page 3-171NA WO - page 3-173NA WO - page 3-174c4 0-7 Undefined - - - -c5 0-1 Undefined - - - -3-22 Copyright © 2006-2008 ARM Limited. All rights reserved. ARM DDI 0344E
System Control CoprocessorTable 3-3 Summary of CP15 registers and operations (continued)CRn Op1 CRm Op2Register oroperationSecurity state Reset value PageNSS2 GHB writeoperation3 BTB writeoperationNA WO - page 3-177NA WO - page 3-1764-7 Undefined - - - -c6 0-7 Undefined - - - -c7 0-1 Undefined - - - -2 GHB readoperationNA WO - page 3-1773 BTB read operation NA WO - page 3-1764-7 Undefined - - - -c8 0 L2 Data 0 Register NA R/W Unpredictable page 3-1781 L2 Data 1 Register NA R/W Unpredictable page 3-1782 L2 tag, L2 validwrite operation3 L2 data, L2 dirtywrite operation4 L2 parity and ECCwrite operationNA WO - page 3-183NA WO - page 3-183NA WO - page 3-1815 L2 Data 2 Register NA R/W Unpredictable page 3-1786-7 Undefined - - - -c9 0-1 Undefined - - - -2 L2 tag, L2 validread operation3 L2 data, L2 dirtyread operationNA WO - page 3-183NA WO - page 3-183ARM DDI 0344E Copyright © 2006-2008 ARM Limited. All rights reserved. 3-23
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Cortex -A8Revision: r2p2Technical R
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Product StatusThe information in th
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ContentsCortex-A8 Technical Referen
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Contents7.8 Parity detection ......
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ContentsA.2 ATB interface .........
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List of TablesCortex-A8 Technical R
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List of TablesTable 3-103 Results o
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List of TablesTable 12-1 Access to
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List of TablesTable 15-3 CTI regist
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List of Tablesxx Copyright © 2006-
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List of FiguresFigure 3-10 Memory M
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List of FiguresFigure 10-13 Retenti
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List of FiguresFigure 15-16 CTI Cha
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PrefaceAbout this manualThis is the
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PrefaceChapter 16 Instruction Cycle
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PrefacePrefix CPrefix HPrefix nPref
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PrefaceFeedbackARM welcomes feedbac
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Introduction1.1 About the processor
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Introduction1.3 Components of the p
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Introduction1.3.4 Load/storeThe loa
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Introduction1.4 External interfaces
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Introduction1.6 Power managementThe
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Introduction1.8 Product revisionsTh
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Introduction1-14 Copyright © 2006-
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Programmer’s Model• Hardware co
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Programmer’s Model2.2 Thumb-2 ins
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Programmer’s Model2.3 ThumbEE ins
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Programmer’s ModelThumbEE Handler
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Programmer’s Model2.4 Jazelle Ext
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Programmer’s Model— the registe
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Programmer’s ModelNonsecureSecure
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Programmer’s Model2.7 VFPv3 archi
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Programmer’s Model2.9 Data typesT
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Page 98 and 99: System Control Coprocessor3.1 About
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System Control CoprocessorFigure 3-
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System Control CoprocessorBits Fiel
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System Control CoprocessorTable 3-6
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System Control CoprocessorMRC p15,
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System Control Coprocessor3.2.37 c5
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System Control CoprocessorVA to PA
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System Control CoprocessorInvalidat
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System Control CoprocessorThe PMNC
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System Control CoprocessorCWhen wri
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System Control Coprocessorb. The EN
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System Control CoprocessorCWhen rea
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System Control Coprocessor• acces
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System Control CoprocessorYou can c
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System Control CoprocessorIf the op
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System Control Coprocessor31 20 19
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System Control CoprocessorTo access
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System Control Coprocessora. An ent
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System Control CoprocessorTo access
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System Control CoprocessorThe PLE I
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System Control Coprocessor31 25 24
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System Control CoprocessorFigure 3-
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System Control CoprocessorTo perfor
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System Control CoprocessorLDR R1, =
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System Control CoprocessorLDR R1, =
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System Control CoprocessorL1 Data 0
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System Control CoprocessorInstructi
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System Control CoprocessorParity/EC
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System Control CoprocessorL2 parity
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System Control CoprocessorThe L2 da
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Chapter 4Unaligned Data and Mixed-e
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Unaligned Data and Mixed-endian Dat
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Unaligned Data and Mixed-endian Dat
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Chapter 5Program Flow PredictionThi
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Program Flow Prediction5.2 Predicte
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Program Flow Prediction5.2.1 Return
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Program Flow Prediction5.4 Guidelin
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Program Flow Prediction5.6 Operatin
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Chapter 6Memory Management UnitThis
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Memory Management Unit6.2 Memory ac
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Memory Management Unit6.4 MMU inter
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Memory Management Unit6.6 TLB lockd
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Chapter 7Level 1 Memory SystemThis
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Level 1 Memory System7.2 Cache orga
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Level 1 Memory System7.3 Memory att
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Level 1 Memory SystemTable 7-1 Memo
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Level 1 Memory System7.5 Data cache
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Level 1 Memory SystemAn exception t
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Level 1 Memory System7.8 Parity det
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Chapter 8Level 2 Memory SystemThis
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Level 2 Memory System8.2 Cache orga
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Level 2 Memory System8.3 Enabling a
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Level 2 Memory SystemControl Regist
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Level 2 Memory System8.4.4 Memory r
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Level 2 Memory System8.5 Synchroniz
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Level 2 Memory System8.6 Locked acc
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Chapter 9External Memory InterfaceT
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External Memory Interfaceto the wri
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External Memory InterfaceTable 9-2
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External Memory Interface9.3 AXI in
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External Memory InterfaceBWBCNoTTSS
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Chapter 10Clock, Reset, and Power C
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Clock, Reset, and Power Controlfami
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Clock, Reset, and Power Control10.2
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Clock, Reset, and Power Control•
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Clock, Reset, and Power Control2. F
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Clock, Reset, and Power ControlNote
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Clock, Reset, and Power ControlAfte
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Clock, Reset, and Power Control•
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Clock, Reset, and Power Control—
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Clock, Reset, and Power ControlThe
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Clock, Reset, and Power ControlPowe
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Clock, Reset, and Power ControlTo p
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Clock, Reset, and Power ControlPowe
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Clock, Reset, and Power ControlATBI
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Clock, Reset, and Power Control7. P
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Chapter 11Design for TestThis chapt
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Design for Test11.1.2 MBIST registe
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Design for Testdseed[3:0]Write the
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Design for TestNoteOnly arrays with
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Design for Test• read and write l
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Design for TestTable 11-10 Selectin
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Design for TestTable 11-15 shows ho
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Design for TestArrayFail[22:0] fail
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Design for TestWhen testing the tag
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Design for Test• Bitmap test mode
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Design for TestCLKARESETnMBISTMODEM
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Design for TestCLKARESETnMBISTMODEM
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Design for TestTable 11-19 shows th
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Design for TestNoteNormal MBIST tes
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Design for TestRowmaxmax - 11 1 1 1
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Design for Test2. R, W_, R_, incr.3
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Design for TestRow3210Addressingdir
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Design for TestRow32100 00 00 00 00
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Design for Test11.2 ATPG test featu
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Design for TestWBR in place of the
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Design for TestOne methodology for
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Chapter 12DebugThis chapter describ
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Debug12.1.3 Debug targetThe debug t
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DebugWhen execution of a monitor ta
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Debug12.3 Debug register interfaceY
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DebugTable 12-3 Debug memory-mapped
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Debug12.3.6 Power domains and debug
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DebugLocks permissionYou can lock t
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DebugTable 12-6 shows the behavior
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Debug12.4 Debug register descriptio
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DebugTable 12-11 shows how the bit
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DebugThe Debug Self Address Offset
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DebugBits Field FunctionTable 12-14
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DebugBits Field Function[9] - Reser
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DebugThe DTR access mode can be one
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DebugBitsFieldFunctionTable 12-16 s
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DebugTable 12-17 Vector Catch Regis
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Debug31 3 2 1 0ReservedNot write-th
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DebugTable 12-23 Breakpoint Control
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Debug12.4.16 Watchpoint Control Reg
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DebugTable 12-26 Watchpoint Control
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DebugNoteOn system reset, PRSR[1] r
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DebugTable 12-32 Management registe
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DebugFigure 12-19 shows the bit arr
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Debug12.5.5 Integration Mode Contro
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Debug12.5.8 Lock Access RegisterThe
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Debug31 8 7 6 5 4 3 2 1 0ReservedSe
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DebugTable 12-44 Peripheral Identif
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DebugTable 12-50 shows how the bit
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Debug12.6.2 Halting debug event•
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Debug12.6.5 Watchpoint debug events
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DebugNoteThe Data Abort handler che
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DebugIf the debugged code is not ru
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DebugTable 12-54 shows the read PC
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Debug12.8.4 Writing to the CPSR in
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DebugCoprocessor instructionsThe ru
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DebugSVCSMCUndefinedThe processor i
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Debug12.9 Cache debugThere are seve
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Debug12.10 External debug interface
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DebugDBGROMADDRThe DBGROMADDR signa
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Debug4. Issue an Instruction Synchr
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Debug12.11.1 Debug communications c
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DebugDebugger access to the DCCA de
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DebugTable 12-58 Values to write to
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Debug}when 1:byte_address_select :=
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DebugNoteIn Example 12-10 on page 1
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Debug12.11.5 Debug state exitWhen e
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DebugExample 12-15 Reading the PCRe
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DebugExample 12-19 Checking for an
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DebugExample 12-22 shows the sequen
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Debug}dscr := ReadDebugRegister(34)
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Debug}scr := (scr | 1);WriteCPReg(1
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DebugIf on a power-down request fro
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Debug; Step 2. Loop writing words f
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Chapter 13NEON and VFP Programmer
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NEON and VFP Programmer’s Modelre
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NEON and VFP Programmer’s ModelS0
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NEON and VFP Programmer’s ModelBa
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NEON and VFP Programmer’s ModelFC
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NEON and VFP Programmer’s ModelTa
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NEON and VFP Programmer’s Model31
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NEON and VFP Programmer’s ModelTh
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NEON and VFP Programmer’s ModelCo
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Chapter 14Embedded Trace MacrocellT
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Embedded Trace Macrocell14.1.2 The
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Embedded Trace Macrocell(DAP) throu
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Embedded Trace MacrocellTable 14-1
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Embedded Trace MacrocellRegister na
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Embedded Trace MacrocellSee the ETM
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Embedded Trace Macrocell14.5 Precis
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Embedded Trace MacrocellThe followi
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Embedded Trace Macrocellcomparator
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Embedded Trace Macrocell14.8 Instru
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Embedded Trace MacrocellWhen a WFI
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Embedded Trace MacrocellYou can use
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Chapter 15Cross Trigger InterfaceTh
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Cross Trigger Interface• An input
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Cross Trigger Interface15.1.2 The c
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Cross Trigger InterfaceTable 15-2 T
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Cross Trigger Interface15.4 About t
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Cross Trigger InterfaceTable 15-3 C
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Cross Trigger Interface15.6 CTI reg
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Cross Trigger InterfaceNoteThe CTII
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Cross Trigger InterfaceBits Field F
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Cross Trigger Interface15.6.9 CTI T
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Cross Trigger InterfaceTable 15-14
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Cross Trigger Interface15.7.4 ITTRI
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Cross Trigger Interface15.8.3 Devic
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Cross Trigger InterfaceActual Compo
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Chapter 16Instruction Cycle TimingT
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Instruction Cycle Timing16.2 Instru
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Instruction Cycle Timingis availabl
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Instruction Cycle TimingTable 16-4
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Instruction Cycle Timing16.2.7 Stat
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Instruction Cycle TimingThe number
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Instruction Cycle Timing16.3 Dual-i
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Instruction Cycle TimingReplayevent
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Instruction Cycle TimingPredicting
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Instruction Cycle TimingUsing MCR i
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Instruction Cycle TimingExample 16-
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Instruction Cycle Timing16.6.3 Adva
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Instruction Cycle Timing16.6.5 Adva
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Instruction Cycle TimingFor example
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Instruction Cycle Timing16.7 VFP in
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Instruction Cycle Timing16.7.2 VFP
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Chapter 17AC CharacteristicsThis ch
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AC CharacteristicsThe timing parame
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AC CharacteristicsTable 17-2 Timing
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AC Characteristics17.4 APB interfac
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AC Characteristics17.5 L1 and L2 MB
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AC Characteristics17.7 DFT interfac
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AC Characteristicsb. Figure 10-6 on
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Appendix ASignal DescriptionsThis a
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Signal DescriptionsA.2 ATB interfac
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Signal DescriptionsTable A-3 MBIST
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Signal DescriptionsA.4 Preload engi
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Signal DescriptionsTable A-6 APB in
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Signal DescriptionsTable A-7 Miscel
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Signal DescriptionsA.8 Miscellaneou
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Appendix BInstruction MnemonicsThis
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Instruction MnemonicsTable B-1 Adva
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Instruction MnemonicsB.2 VFP data-p
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GlossaryThis glossary describes som
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GlossaryApplication Specific Integr
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GlossaryRead ID capabilityThe maxim
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GlossaryByte-invariantIn a byte-inv
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GlossaryCAM includes comparison log
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GlossaryDouble-precision valueConsi
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Glossary• arithmetic operation re
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GlossaryInvalidateJazelle architect
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GlossaryPAPenaltyPower-on resetPref
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GlossarySetSet-associative cacheSee
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GlossaryTrapTrigger instructionAn e
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GlossaryWrite-back (WB)Write buffer
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