[Agilent-安捷伦]Agilent3070 family ?? [复制链接]

请问大虾们：
      board 文件中的 family 电压：Drive low -0.3,算是正常驱动吧？

      任何一个IC或BGA的Drive low 是负值能正常驱动的起来吗？

一般最多是0，负值应该不会有，不过要看具体什么family , 哪个 IC用到了这个 family ,要仔细的看看 IC的datasheet，最简便的方法，看看其他程式里面这个falily 的 drive low是多少就知道了，可能是认为更改的。

负值是不能驱动起来的
最多是0

FAMILY OPTIONS
CMOS
  Drive High   4.5;
  Drive Low     0.2;
  Receive High   2;
  Receive Low     1;
  Edge Speed   100;
  Open Input Default X;
  Load     UP;
CMOS_LA
  Drive High   4.7;
  Drive Low     0;
  Receive High   2;
  Receive Low     2;
  Edge Speed   100;
  Open Input Default X;
  Load     UP;
TTL
  Drive High   3.5;
  Drive Low     0.2;
  Receive High   2;
  Receive Low     1;
  Edge Speed   100;
  Open Input Default X;
  Load     UP;
ECL
  Drive High   -0.9;
  Drive Low   -2.1;
  Receive High -1.3;
  Receive Low   -1.4;
  Edge Speed   100;
  Open Input Default X;
  Load     DOWN;
PECL
  Drive High   4.1;
  Drive Low     2.9;
  Receive High   3.6;
  Receive Low   3.5;
  Edge Speed   100;
  Open Input Default X;
  Load     DOWN;
LVT
  Drive High   3.1;
  Drive Low     0.2;
  Receive High   2;
  Receive Low     1;
  Edge Speed   100;
  Open Input Default X;
  Load     UP;
LVT_LO
  Drive High   3.1;
  Drive Low     0;
  Receive High   2;
  Receive Low     2;
  Edge Speed   100;
  Open Input Default X;
  Load     UP;
LVT_LAMA
  Drive High   3.5;
  Drive Low     0;
  Receive High   2;
  Receive Low     1;
  Edge Speed   100;
  Open Input Default X;
  Load     UP;
LVDS
  Drive High   1.8;
  Drive Low     0.7;
  Receive High   1.3;
  Receive Low   1.2;
  Edge Speed   100;
  Open Input Default X;
  Load     NONE;
RS232
  Drive High     5;
  Drive Low   -3.5;
  Receive High   1;
  Receive Low   -1;
  Edge Speed   100;
  Open Input Default X;
  Load     UP;
GTL
  Drive High   1.2;
  Drive Low     0.6;
  Receive High   1;
  Receive Low   0.8;
  Edge Speed   100;
  Open Input Default X;
  Load     UP;


you need check what's type with the device.   ( ECL   RS232 )

但是我用了负值驱动,误测更少,

这个没有用过，有机会尝试一下

谁说没有负值，一知半解。

it is common for ECL family with negative values.