Altera DDR SDRAM High-Performance Controllers and ALTMEMP Bedienungsanleitung Seite 116
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6–22 Chapter 6: Functional Description—High-Performance Controller II
Register Maps
External Memory Interface Handbook Volume 3 June 2011 Altera Corporation
Section I. DDR and DDR2 SDRAM Controllers with ALTMEMPHY IP User Guide
Register Maps
Table 6–13 shows the overall register mapping for the DDR and DDR2 SDRAM
Controllers with ALTMEMPHY.
ALTMEMPHY Register Map
The ALYMEMPHY register map allows you to control the memory components’
mode register settings. Table 6–14 shows the register map for ALYMEMPHY.
To access the ALTMEMPHY register map, connect the ALTMEMPHY debug interface
signals using the Avalon-MM protocol. After configuring the ALTMEMPHY register
map, initialize a calibration request by setting bit 2 in the CSR register map address
0x100 for the mode register settings to take effect.
Table 6–13. Register Map
Address Description
ALTMEMPHY Register Map
0x005 Mode register 0-1.
0x006 Mode register 2-3.
Controller Register Map
0x100 ALTMEMPHY status and control register.
0x110 Controller status and configuration register.
0x120 Memory address size register 0.
0x121 Memory address size register 1.
0x122 Memory address size register 2.
0x123 Memory timing parameters register 0.
0x124 Memory timing parameters register 1.
0x125 Memory timing parameters register 2.
0x126 Memory timing parameters register 3.
0x130 ECC control register.
0x131 ECC status register.
0x132 ECC error address register.
- ALTMEMPHY IP User Guide 1
- Contents 3
- Chapter 7. Latency 5
- Chapter 8. Timing Diagrams 5
- 1. About This IP 7
- Release Information 8
- Device Family Support 8
- Features 9
- Unsupported Features 10
- MegaCore Verification 10
- Resource Utilization 11
- System Requirements 12
- Installation and Licensing 13
- 1–8 Chapter 1: About This IP 14
- 2. Getting Started 15
- SOPC Builder Flow 16
- Qsys Flow 18
- Completing the Qsys System 19
- Specifying Parameters 20
- HardCopy Guidelines 21
- Generated Files 22
- 3. Parameter Settings 27
- Memory Settings 28
- ALTMEMPHY Parameter Settings 29
- Note to Table 3–3: 32
- Note to Table 3–5: 34
- PHY Settings 36
- Board Settings 38
- ■ Memory Settings 39
- ■ PHY Settings 39
- ■ Board Settings 39
- ■ Controller Settings 39
- Controller Settings 40
- 4. Compiling and Simulating 43
- Compiling the Design 44
- Simulating the Design 46
- Block Description 48
- Calibration 49
- Address and Command Datapath 49
- ), or the inverted 50
- Clock and Reset Management 51
- Notes to Table 5–4: 54
- Note to Table 5–2: 57
- Cyclone III Devices 59
- Read Datapath 66
- Note to Figure 5–6: 68
- Note to Figure 5–8: 70
- Devices 71
- GX Devices 72
- ALTMEMPHY Signals 73
- Notes to Table 5–5: 74
- Note to Table 5–5: 77
- Notes to Table 5–7: 79
- PHY-to-Controller Interfaces 80
- Altera Device 81
- -- a --b 82
- Figure 5–15. Full-Rate Reads 83
- Figure 5–16. Half-Rate Reads 83
- Notes to Figure 5–17: 85
- Notes to Figure 5–18: 86
- Notes to Figure 5–19: 87
- Notes to Figure 5–20: 88
- Preliminary Steps 89
- Design Considerations 89
- Clocks and Resets 89
- Using a Custom Controller 90
- Partial Write Operations 92
- 6. Functional Description— 95
- Avalon-ST Input Interface 96
- Command Generator 96
- Timing Bank Pool 96
- Arbitration Rules 97
- CSR Interface 98
- Data Reordering 98
- Pre-emptive Bank Management 98
- Quasi-1T and Quasi-2T 98
- User Autoprecharge Commands 98
- User-Controlled Self-Refresh 99
- DDR2 SDRAM 100
- Partial Writes 101
- Partial Bursts 102
- External Interfaces 103
- Memory Side-Band Signals 104
- Top-Level Signals Description 105
- ■ Full rate controllers 107
- ■ Half rate controllers 107
- Sequence of Operations 111
- Read Command 112
- Read-Modify-Write Command 112
- Example Top-Level File 113
- Example Driver 114
- Register Maps 116
- Controller Register Map 118
- 7. Latency 123
- 7–2 Chapter 7: Latency 124
- Note to Table 7–2: 125
- SDRAM values 126
- Handbook 127
- 7–6 Chapter 7: Latency 128
- 8. Timing Diagrams 129
- Half-Rate Read 130
- Half-Rate Write 132
- Full-Rate Read 134
- Full-Rate Write 136
- Additional Information 139
- Typographic Conventions 140
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