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DDR4 Spec

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发表于 2020-12-18 14:05:52 | 显示全部楼层 |阅读模式 来自 广东省深圳市
2 DDR4 SDRAM Package Pinout and Addressing
2.1 DDR4 SDRAM Row for X4, X8 and X16
The DDR4 SDRAM x4/x8 component will have 13 electrical rows of balls. Electrical is defined as rows that contain signal ball or
power/ground balls. There may be additional rows of inactive balls for mechanical support.
The DDR4 SDRAM x16 component will have 16 electrical rows of balls. There may be additional rows of inactive balls for mechanical
support.
2.2 DDR4 SDRAM Ball Pitch
The DDR4 SDRAM component will use a ball pitch of 0.8 mm by 0.8 mm.
The number of depopulated columns is 3.
2.3 .DDR4 SDRAM Columns for X4,X8 and X16
The DDR4 SDRAM x4/x8 and x16 component will have 6 electrical columns of balls in 2 sets of 3 columns.
There will be columns between the electrical columns where there are no balls populated. The number of these columns is 3.
Electrical is defined as columns that contain signal ball or power/ground balls. There may be additional columns of inactive balls for
mechanical support.
2.4 DDR4 SDRAM X4/8 Ballout using MO-207
NOTE 1 These pins are not connected for the X4 configuration.
NOTE 2 TDQS_t is not valid for the x4 configuration.
NOTE 3 TDQS_c is not valid for the x4 configuration.
NOTE 4 A17 is only defined for the x4 configuration.
NOTE 5 These pins are for stacked component such as 3DS. For mono package, these pins are NC.
NOTE 6 ODT1 / CKE1 /CS1_n are used together only for DDP.
NOTE 7 TEN is optional for 8Gb and above. This pin is not connected if TEN is not supported
  

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DDR4 SPEC
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发表于 2020-12-18 15:22:55 | 显示全部楼层 来自 河南省平顶山市
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发表于 2021-12-3 23:47:39 | 显示全部楼层 来自 北京市
谢谢分享,学习一下
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发表于 2022-4-10 20:57:36 | 显示全部楼层 来自 广东省广州市
谢谢分享,学习一下
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