请教个DDR3 ODT相关的问题
时间:12-12
整理:3721RD
点击:
情况是这样,一般应用是1 channel管理 2 slot RDIMM ,2 rank/slot.
read/write odt table如下:
.---------------------------------------++--------------------------------------
| write to || odt to
+---------+---------+---------+---------++---------+---------+---------+--------
| chip 0 | chip 1 | chip 2 | chip 3 || chip 0 | chip 1 | chip 2 | chip 3
|=--------+---------+---------+---------++---------+---------+---------+--------
| 1 | | | || 1 | | 1 |
+---------+---------+---------+---------++---------+---------+---------+--------| | 1 | | || | 1 | | 1
+---------+---------+---------+---------++---------+---------+---------+--------
| | | 1 | || 1 | | 1 |
+---------+---------+---------+---------++---------+---------+---------+--------
| | | | 1 || | 1 | | 1
'---------+---------+---------+---------++---------+---------+---------+--------
.---------------------------------------++--------------------------------------
| read to || odt to
+---------+---------+---------+---------++---------+---------+---------+--------
| chip 0 | chip 1 | chip 2 | chip 3 || chip 0 | chip 1 | chip 2 | chip 3
|=--------+---------+---------+---------++---------+---------+---------+--------
| 1 | | | || | | 1 |
+---------+---------+---------+---------++---------+---------+---------+--------
| | 1 | | || | | | 1
+---------+---------+---------+---------++---------+---------+---------+--------
| | | 1 | || 1 | | |
+---------+---------+---------+---------++---------+---------+---------+--------
| | | | 1 || | 1 | |
'---------+---------+---------+---------++---------+---------+---------+--------
现在的应用情况是3 slot, 4 rank/slot.
table改怎么配置合适呢?
多谢
read/write odt table如下:
.---------------------------------------++--------------------------------------
| write to || odt to
+---------+---------+---------+---------++---------+---------+---------+--------
| chip 0 | chip 1 | chip 2 | chip 3 || chip 0 | chip 1 | chip 2 | chip 3
|=--------+---------+---------+---------++---------+---------+---------+--------
| 1 | | | || 1 | | 1 |
+---------+---------+---------+---------++---------+---------+---------+--------| | 1 | | || | 1 | | 1
+---------+---------+---------+---------++---------+---------+---------+--------
| | | 1 | || 1 | | 1 |
+---------+---------+---------+---------++---------+---------+---------+--------
| | | | 1 || | 1 | | 1
'---------+---------+---------+---------++---------+---------+---------+--------
.---------------------------------------++--------------------------------------
| read to || odt to
+---------+---------+---------+---------++---------+---------+---------+--------
| chip 0 | chip 1 | chip 2 | chip 3 || chip 0 | chip 1 | chip 2 | chip 3
|=--------+---------+---------+---------++---------+---------+---------+--------
| 1 | | | || | | 1 |
+---------+---------+---------+---------++---------+---------+---------+--------
| | 1 | | || | | | 1
+---------+---------+---------+---------++---------+---------+---------+--------
| | | 1 | || 1 | | |
+---------+---------+---------+---------++---------+---------+---------+--------
| | | | 1 || | 1 | |
'---------+---------+---------+---------++---------+---------+---------+--------
现在的应用情况是3 slot, 4 rank/slot.
table改怎么配置合适呢?
多谢