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PowerPC™ 405 Processor Block Reference Guide www.xilinx.com 181
UG018 (v2.0) August 20, 2004 1-800-255-7778
R
Application Notes and Reference Designs
Xilinx provides several application notes and reference designs utilizing the OCM
controllers. Design examples include:
x Booting the PPC405 from on-chip memory.
x Using the dual port feature of the DSOCM in eight, sixteen and thirty-two bit fabric
interfaces
x A comparison of PLB versus OCM performance using a software example.
For Virtex-II Pro the following application notes and reference designs are available from
the Xilinx web site at http://support.xilinx.com/apps/appsweb.htm:
x XAPP644: “PLB vs. OCM Comparison Using the Packet Processor Software”
x XAPP660: “Partial Reconfiguration of RocketIO Pre-emphasis and Differential Swing
Control Attributes”
x XAPP669: “PPC405 PPE Reference System Using Virtex-II Pro RocketIO Transceivers”
x XAPP672: “The UltraController Solution: A Lightweight PowerPC Microcontroller”
x XAPP699:“A Software UART for the UltraController GPIO Interface”
References
x Virtex-II Pro Platform FPGA Handbook
x Virtex-4 Platform FPGA Handbook
x PowerPC Processor Reference Guide
- PowerPC™ 405 Processor 1
- Block Reference Guide 1
- 1-800-255-7778 2
- UG018 (v2.0) August 20, 2004 3
- Table of Contents 5
- Guide Contents 9
- Additional Resources 10
- Conventions 10
- Online Document 11
- Registers 12
- Register Descriptive Name 13
- Preface: About This Guide 14
- PowerPC Architecture 17
- Virtual Environment 19
- Operating Environment 19
- PowerPC 405 Software Features 21
- Privilege Modes 22
- Address Translation Modes 22
- Addressing Modes 23
- Data Types 23
- Register Set Summary 23
- General-Purpose Registers 24
- Special-Purpose Registers 25
- Machine-State Register 25
- Condition Register 25
- Device Control Registers 25
- Central-Processing Unit 26
- Exception Handling Logic 27
- Memory Management Unit 27
- Instruction and Data Caches 28
- Timer Resources 29
- PowerPC 405 Interfaces 29
- PowerPC 405 Performance 30
- Input/Output Interfaces 33
- Signal Naming Conventions 34
- UG018_02_01_051204 36
- C405CPMTIMERIRQ (Output) 39
- C405CPMTIMERRESETREQ (Output) 39
- C405CPMCORESLEEPREQ (Output) 39
- Virtex-4 Specific 40
- CPU Control Interface 41
- TIEC405MMUEN (Input) 42
- TIEC405DISOPERANDFWD (Input) 42
- Reset Interface 43
- UG018_03_102001 44
- C405RSTCORERESETREQ (Output) 45
- C405RSTCHIPRESETREQ (Output) 45
- C405RSTSYSRESETREQ (Output) 45
- RSTC405RESETCORE (Input) 46
- RSTC405RESETCHIP (Input) 46
- RSTC405RESETSYS (Input) 46
- JTGC405TRSTNEG (Input) 47
- Guarded Storage 50
- C405PLBICUREQUEST (Output) 52
- C405PLBICUABUS[0:29] (Output) 52
- C405PLBICUSIZE[2:3] (Output) 53
- C405PLBICUCACHEABLE (Output) 53
- C405PLBICUU0ATTR (Output) 54
- C405PLBICUABORT (Output) 54
- PLBC405ICUADDRACK (Input) 55
- PLBC405ICUSSIZE1 (Input) 55
- PLBC405ICURDDACK (Input) 56
- UG018_10_102001 57
- PLBC405ICUBUSY (Input) 58
- PLBC405ICUERR (Input) 59
- Abbreviation 61
- Description Where Used 61
- PLB/BIU Outputs: 62
- ISPLB Aborted Fetch Request 67
- Data-Side PLB Operation 68
- Address Pipelining 71
- Unaligned Accesses 71
- UG018_05_102001 72
- C405PLBDCUREQUEST (Output) 73
- C405PLBDCURNW (Output) 74
- C405PLBDCUABUS[0:31] (Output) 74
- C405PLBDCUSIZE2 (Output) 74
- C405PLBDCUCACHEABLE (Output) 75
- C405PLBDCUWRITETHRU (Output) 75
- C405PLBDCUU0ATTR (Output) 76
- C405PLBDCUGUARDED (Output) 76
- C405PLBDCUBE[0:7] (Output) 76
- Byte Enables [0:7] 77
- C405PLBDCUABORT (Output) 78
- PLBC405DCUADDRACK (Input) 80
- PLBC405DCUSSIZE1 (Input) 81
- PLBC405DCURDDACK (Input) 82
- PLBC405DCUWRDACK (Input) 83
- PLBC405DCUBUSY (Input) 84
- PLBC405DCUERR (Input) 84
- Table 2-20 100
- External DCR Bus Interface 101
- UG018_52_042304 102
- UG018_53_051204 103
- DCR Slave 103
- Processor Core 103
- Virtex-4-FX 104
- DCRC405ACK/EXTDCRACK (Input) 106
- PPC405 Outputs: 107
- DCR Outputs: 107
- UG018_07_102001 110
- EICC405CRITINPUTIRQ 110
- EICC405EXTINPUTIRQ 110
- PPC405 JTAG Debug Port 111
- JTAG Instruction Register 113
- UG018_70_100803 114
- UG018_71_100803 114
- UG018_76_032504 115
- UG018_75_032504 116
- PPC405 Cores) 117
- UG018_73_032504 118
- JTAG Logic 119
- Primitive 120
- Debug Interface 128
- DBGC405EXTBUSHOLDACK (Input) 129
- DBGC405DEBUGHALT (Input) 129
- C405DBGWBFULL (Output) 130
- C405DBGWBIAR[0:29] (Output) 130
- C405DBGWBCOMPLETE (Output) 130
- C405DBGMSRWE (Output) 130
- Trace Interface 131
- C405TRCCYCLE (Output) 133
- TRCC405TRIGGEREVENTIN (Input) 134
- TRCC405TRACEDISABLE (Input) 134
- If Unused Function 135
- MCBCPUCLKEN (Input) 136
- MCBJTAGEN (Input) 136
- MCBTIMEREN (Input) 137
- MCPPCRST (Input) 137
- Introduction 139
- Functional Features 140
- OCM Controller Operation 142
- Execution Re-ordering 144
- Store-data Bypass 144
- UG018_37b_12080 145
- UG018_37_020102 145
- DSOCM Input Ports 146
- DSOCM Input Ports: Attributes 147
- DSOCM Output Ports 148
- DSOCM-to-BRAM Interfaces 149
- *ENA can be tied off 150
- To/from FPGA logic 151
- (application-specific use 151
- Global signals from FPGA 151
- UG018_37c_042304 152
- UG018_38_020102 152
- UG018_38b_11210 153
- ISOCM Input Ports, Attributes 154
- ISOCM Output Ports 155
- UG018_49_112103 157
- Programmer’s Model 158
- DSCNTL Registers 159
- ISCNTL Registers 160
- UG018_46_042304 162
- UG018_46b_042304 163
- UG018_47_04230 164
- UG018_47b_05120 165
- DCR Write Access 166
- DCR Read Access 167
- UG018_69_042304 168
- UG018_69b_05120 169
- Single-Cycle Mode 170
- Multi-Cycle Mode 170
- ISOCM Instruction Fetching 170
- UG018_60_03060 171
- Writing to ISBRAM 172
- UG018_66_03060 173
- UG018_67_030603 174
- UG018_62_03060 175
- DSOCM Store, Fixed Latency 176
- Controller Only) 177
- UG018_62c_11210 178
- UG018_63c_112103 179
- UG018_64c_12080 180
- UG018_65c_12080 180
- References 181
- FCM Instruction Processing 184
- UG018_04_01_040904 184
- Resynchronization_Interface 184
- Instruction Classes 185
- Enabling the APU Controller 185
- Instruction Format 186
- Instruction Decoding 187
- FCM Load/Store Instructions 188
- Integer Divide Instructions 189
- FCM Exceptions 190
- FCM Instruction Flushing 190
- Execution Hazards 190
- APU Controller Configuration 191
- UDI Configuration Registers 192
- Interface Definition 193
- APU Controller Input Signals 194
- APU Controller Output Signals 196
- APU Controller Attributes 197
- APU Controller 198
- Configuration Field 198
- TIEAPUCONTROL Bits 198
- Autonomous Transactions 199
- UG018_04_03_032504 200
- Blocking Transactions 201
- Non-Blocking Transactions 202
- FCM Load Instruction 203
- FCM Store Instruction 204
- FCM Exception 205
- UG018_04_11_032504 206
- UG018_04_12_042304 206
- Appendix A 207
- RISCTrace Interface 209
- Signal Summary 213
- Appendix B: Signal Summary 214
- Processor Block Timing Model 223
- Parameter Function Signals 225
- UG012_C1_02_121701 232
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