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2.4.2. Intel® Stratix® 10 器件中带校准的RSOCT
Intel® Stratix® 10 器件支持所有LVDS I/O bank中的有校准RS OCT。
I/O标准 | 已校准的OCT(输出) | |
---|---|---|
RS (Ω) | RZQ (Ω) | |
1.8 V LVCMOS | 25, 50 | 100 |
1.5 V LVCMOS | 25, 50 | 100 |
1.2 V LVCMOS | 25, 50 | 100 |
SSTL-18 Class I | 50 | 100 |
SSTL-18 Class II | 25 | 100 |
SSTL-15 Class I | 50 | 100 |
SSTL-15 Class II | 25 | 100 |
SSTL-15 | 34, 40 | 240 |
SSTL-135 | 34, 40 | 240 |
SSTL-125 | 34, 40 | 240 |
SSTL-12 | 34, 40, 60, 120, 240 | 240 |
POD12 | 34, 40, 48, 60 | 240 |
1.8 V HSTL Class I | 50 | 100 |
1.8 V HSTL Class II | 25 | 100 |
1.5 V HSTL Class I | 50 | 100 |
1.5 V HSTL Class II | 25 | 100 |
1.2 V HSTL Class I | 50 | 100 |
1.2 V HSTL Class II | 25 | 100 |
HSUL-12 | 34, 40, 48, 60, 80 | 240 |
Differential SSTL-18 Class I | 50 | 100 |
Differential SSTL-18 Class II | 25 | 100 |
Differential SSTL-15 Class I | 50 | 100 |
Differential SSTL-15 Class II | 25 | 100 |
Differential SSTL-15 | 34, 40 | 240 |
Differential SSTL-135 | 34, 40 | 240 |
Differential SSTL-15 Class I | 50 | 100 |
Differential SSTL-15 Class II | 25 | 100 |
Differential SSTL-125 | 34, 40 | 240 |
Differential SSTL-12 | 34, 40, 60, 120, 240 | 240 |
Differential POD12 | 34, 40, 48, 60 | 240 |
Differential 1.8 V HSTL Class I | 50 | 100 |
Differential 1.8 V HSTL Class II | 25 | 100 |
Differential 1.5 V HSTL Class I | 50 | 100 |
Differential 1.5 V HSTL Class II | 25 | 100 |
Differential 1.2 V HSTL Class I | 50 | 100 |
Differential 1.2 V HSTL Class II | 25 | 100 |
Differential HSUL-12 | 34, 40, 48, 60, 80 | 240 |
RS OCT校准电路对比I/O缓冲器总阻抗与连接到RZQ管脚的外部基准电阻,并动态使能或禁用晶体管直到两者相匹配。
器件配置的最后阶段进行校准。 当校准电路发现正确的阻抗时,就会掉电并停止更改驱动器的特性。
图 8. 有校准的RS OCT该图显示作为输出晶体管固有阻抗的RS。