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作者:codingbelief 发布于:2016-8-29 22:42 分类:基础技术
DRAM 原理 4 :DRAM Timing
作者:codingbelief 发布于:2016-8-29 22:42 分类:基础技术
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DRAM 原理 2 :DRAM Memory Organization
DRAM 原理 5 :DRAM Devices Organization
- Overview
- 时序图例
后续的小节中,我们将通过下图类似的时序图,来描述各个 Command 的详细时序。
- Row Active Command
3.1 Row Sense
3.2 Row Restore
- Column Read Command
- Column Write Command
Memory Type | tCWD |
---|---|
SDRAM | 0 cycles |
DDR SDRAM | 1 cycle |
DDR2 SDRAM | tCAS - 1 cycle |
DDR3 SDRAM | programmable |
- Precharge Command
- Row Refresh Command
- Read Cycle
- Read Command With Auto Precharge
- Additive Latency
11. DRAM Timing 设定
- 参考资料
- Memory Systems - Cache Dram and Disk
- High Performance Dram System Design Constraints and Considerations
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