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Ixiasoft
2.4.1. Intel® Stratix® 10 器件中无校准的RS OCT
Intel® Stratix® 10 器件支持用于单端和基准电压I/O标准的RS OCT。仅输出支持无校准的RS OCT。
I/O标准 | 未校准的OCT(输出) |
---|---|
RS (Ω) | |
3.0 V LVTTL/3.0 V LVCMOS | 25, 50 |
2.5 V LVCMOS | 25, 50 |
1.8 V LVCMOS | 25, 50 |
1.5 V LVCMOS | 25, 50 |
1.2 V LVCMOS | 25, 50 |
SSTL-18 Class I | 50 |
SSTL-18 Class II | 25 |
SSTL-15 Class I | 50 |
SSTL-15 Class II | 25 |
SSTL-15 | 34, 40 |
SSTL-135 | 34, 40 |
SSTL-125 | 34, 40 |
SSTL-12 | 34, 40, 60, 120, 240 |
POD12 | 34, 40, 48, 60 |
1.8 V HSTL Class I | 50 |
1.8 V HSTL Class II | 25 |
1.5 V HSTL Class I | 50 |
1.5 V HSTL Class II | 25 |
1.2 V HSTL Class I | 50 |
1.2 V HSTL Class II | 25 |
HSUL-12 | 34, 40, 48, 60, 80 |
Differential SSTL-18 Class I | 50 |
Differential SSTL-18 Class II | 25 |
Differential SSTL-15 Class I | 50 |
Differential SSTL-15 Class II | 25 |
Differential SSTL-15 | 34, 40 |
Differential SSTL-15 Class I | 50 |
Differential SSTL-15 Class II | 25 |
Differential SSTL-135 | 34, 40 |
Differential SSTL-125 | 34, 40 |
Differential SSTL-12 | 34, 40, 60, 120, 240 |
Differential POD12 | 34, 40, 48, 60 |
Differential 1.8 V HSTL Class I | 50 |
Differential 1.8 V HSTL Class II | 25 |
Differential 1.5 V HSTL Class I | 50 |
Differential 1.5 V HSTL Class II | 25 |
Differential 1.2 V HSTL Class I | 50 |
Differential 1.2 V HSTL Class II | 25 |
Differential HSUL-12 | 34, 40, 48, 60, 80 |
驱动器阻抗匹配对I/O驱动器提供与传输线路阻抗高度匹配的受控输出阻抗。因而极大减少PCB走线上的信号反射。
如果使用阻抗匹配,则无法指定电流强度。
图 7. 无校准的RS OCT该图显示作为输出晶体管固有阻抗的RS。