Altera PHY IP Core Guida Utente Scaricare il pdf (Pagina 157)

Chapter 9: Timing Diagrams 9–11

DDR3 High-Performance Controllers

December 2010 Altera Corporation External Memory Interface Handbook Volume 3

Section II. DDR3 SDRAM Controller with ALTMEMPHY IP User Guide

The following sequence corresponds with the numbered items in Figure 9–6:

1. The PHY initialization stage; wait for PLL to unlock.

2. The DRAM

nitialization stage; reset sequence.

3. Various SDRAM bus commands during the initialization sequence.

1 2 ... 152 153 154 155 156 157 158 159 160 161 162 ... 175 176

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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