注册 登录  
 加关注
查看详情
   显示下一条  |  关闭
温馨提示!由于新浪微博认证机制调整,您的新浪微博帐号绑定已过期,请重新绑定!立即重新绑定新浪微博》  |  关闭

火车的家

Put first thing first

 
 
 

日志

 
 

2012.01.11 SDRAM Trc Timing Value  

2012-01-11 15:38:15|  分类: linux kernel |  标签: |举报 |字号 订阅

  下载LOFTER 我的照片书  |

link

This BIOS feature controls the memory module's Row Cycle Time or tRC. The row cycle time determines the minimum number of clock cycles a memory row takes to complete a full cycle, from row activation up to the precharging of the active row.

Formula-wise, the row cycle time (tRC) = minimum row active time (tRAS) + row precharge time (tRP). Therefore, it is important to find out what the tRAS and tRP parameters are before setting the row cycle time.

If the row cycle time is too long, it can reduce performance by unnecessarily delaying the activation of a new row after a completed cycle. Reducing the row cycle time allows a new cycle to begin earlier.

However, if the row cycle time is too short, a new cycle may be initiated before the active row is sufficiently precharged. When this happens, there may be data loss or corruption.

For optimal performance, use the lowest value you can, according to the tRC = tRAS + tRP formula. For example, if your memory module's tRAS is 7 clock cycles and its tRP is 4 clock cycles, then the row cycle time or tRC should be 11 clock cycles.
  评论这张
 
阅读(588)| 评论(0)
推荐 转载

历史上的今天

在LOFTER的更多文章

评论

<#--最新日志,群博日志--> <#--推荐日志--> <#--引用记录--> <#--博主推荐--> <#--随机阅读--> <#--首页推荐--> <#--历史上的今天--> <#--被推荐日志--> <#--上一篇,下一篇--> <#-- 热度 --> <#-- 网易新闻广告 --> <#--右边模块结构--> <#--评论模块结构--> <#--引用模块结构--> <#--博主发起的投票-->
 
 
 
 
 
 
 
 
 
 
 
 
 
 

页脚

网易公司版权所有 ©1997-2018