Altera PHY IP Core Guida Utente Pagina 51
- Pagina / 176
- Indice
- SEGNALIBRI
- User Guide 1
- Contents 3
- Chapter 8. Latency 5
- Chapter 9. Timing Diagrams 5
- 1. About This IP 7
- Release Information 8
- Device Family Support 8
- 1–4 Chapter 1: About This IP 10
- Features 10
- ALTMEMPHY Megafunction 11
- Note to Table 1–4: 12
- Note to Table 1–5: 12
- High-Performance Controller 13
- System Requirements 14
- Installation and Licensing 14
- Free Evaluation 15
- 1–10 Chapter 1: About This IP 16
- 2. Getting Started 17
- Specifying Parameters 18
- SOPC Builder Flow 19
- Generated Files 22
- 3. Parameter Settings 29
- Memory Settings 30
- ALTMEMPHY Parameter Settings 31
- Note to Table 3–3: 34
- Note to Table 3–5: 38
- PHY Settings 39
- Board Settings 41
- Controller Settings 42
- 4. Compiling and Simulating 47
- Compiling the Design 48
- Simulating the Design 50
- Calibration 55
- DDR3 SDRAM Without Leveling 55
- Step 6: Postamble 57
- Step 7: Prepare for User Mode 57
- DDR3 SDRAM With Leveling 59
- Step 2: Write Leveling 62
- Address and Command Datapath 63
- ° ), or the inverted 64
- Clock and Reset Management 65
- Clock Management 65
- Note to Table 5–1: 67
- Reset Management 69
- Read Datapath 70
- Write Datapath 74
- ALTMEMPHY Signals 75
- Notes to Table 5–3: 77
- Note to Table 5–3: 79
- Notes to Table 5–5: 82
- PHY-to-Controller Interfaces 83
- Notes to Figure 5–17: 86
- Notes to Figure 5–18: 87
- Notes to Figure 5–19: 88
- Notes to Figure 5–20: 89
- Preliminary Steps 90
- Design Considerations 90
- Clocks and Resets 90
- Using a Custom Controller 91
- 6. Functional Description— 95
- Command FIFO Buffer 96
- PHY Interface Logic 98
- Control Logic 99
- Figure 6–3. ECC Block Diagram 100
- Block Description 101
- Interrupts 102
- Partial Writes 102
- Partial Bursts 103
- ECC Latency 103
- ECC Registers 104
- ECC Register Bits 106
- Example Top-Level File 108
- Example Driver 109
- Top-level Signals Description 110
- or vhd file 111
- Note to Table 6–14: 114
- 7. Functional Description— 117
- Write Data FIFO Buffer 120
- Command Queue 120
- Bank Management Logic 120
- Timer Logic 121
- Command-Issuing State Machine 121
- ODT Generation Logic 122
- User-Refresh Commands 122
- Multi-Cast Write 122
- Low-Power Mode Logic 123
- Error Correction Coding (ECC) 123
- Notes to Table 7–7: 133
- Register Maps Description 134
- ALTMEMPHY Register Map 135
- Controller Register Map 137
- 8. Latency 143
- 8–2 Chapter 8: Latency 144
- Chapter 8: Latency 8–3 145
- 8–4 Chapter 8: Latency 146
- 9. Timing Diagrams 147
- Auto-Precharge 148
- [1] [2] [3] 148
- User Refresh 149
- Initialization Timing 156
- Calibration Timing 158
- AABBCCDD AABBCCDD AABBCCDD 162
- EEFF0011 EEFF0011 EEFF0011 162
- [1] [3] [4][2] 166
- Half-Rate Read With Gaps 168
- Half-Rate Write With Gaps 169
- [2][1] [5] [4] [6][3] 170
- [12][6][7][10] [11] 172
- Additional Information 175
- Typographic Conventions 176
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