Texas Instruments DM648 DSP Manuals

Texas Instruments DM648 DSP Manuals

Manuals and User Guides for Texas Instruments DM648 DSP. We have 1 Texas Instruments DM648 DSP manual available for free PDF download: User Manual

Texas Instruments DM648 DSP User Manual

Texas Instruments DM648 DSP User Manual (47 pages)

DSP DDR2 Memory Controller

Brand: Texas Instruments | Category: Controller | Size: 0.42 MB

Table of Contents

Table of Contents
3
Preface

6
Introduction

9
Peripheral Architecture

11
- Clock Control
  11
- Memory Map
  11
- Signal Descriptions
  11
- DDR2 Memory Controller Signals
  12
- DDR2 Memory Controller Signal Descriptions
  12
  - Protocol Description(S)
    13
- DDR2 SDRAM Commands
  13
- Truth Table for DDR2 SDRAM Commands
  13
- DDR2 MRS and EMRS Command
  14
- Refresh Command
  15
- ACTV Command
  15
- DCAB Command
  16
- DEAC Command
  16
- DDR2 READ Command
  17
  - Memory Width and Byte Alignment
    18
- DDR2 WRT Command
  18
- Addressable Memory Ranges
  18
  - Address Mapping
    19
- Byte Alignment
  19
- Logical Address-To-DDR2 SDRAM Address Map for 32-Bit SDRAM
  19
- Bank Configuration Register Fields for Address Mapping
  19
- Logical Address-To-DDR2 SDRAM Address Map for 16-Bit SDRAM
  20
- Logical Address-To-DDR2 SDRAM Address Map
  21
  - DDR2 Memory Controller Interface
    22
- DDR2 SDRAM Column, Row, and Bank Access
  22
- DDR2 Memory Controller FIFO Description
  22
- DDR2 Memory Controller FIFO Block Diagram
  23
  - Refresh Scheduling
    25
- Refresh Urgency Levels
  25
  - Self-Refresh Mode
    26
  - 2.10 Reset Considerations
    26
- DDR2 Memory Controller Reset Block Diagram
  26
- Reset Sources
  26
  - 2.11 DDR2 SDRAM Memory Initialization
    27
- DDR2 SDRAM Mode Register Configuration
  27
- DDR2 SDRAM Extended Mode Register 1 Configuration
  27
Using the DDR2 Memory Controller

29
DDR2 Memory Controller Registers

36
Appendix A Revision History

46
- Document Revision History
  46
- Important Notice
  47

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