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cable线引入的延迟大概多少ns?

asked 2019-01-21 01:51:14 -0600

nick qian gravatar image

cable线引入的延迟大概多少ns?
对比硬连线

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answered 2022-04-19 02:14:08 -0600

fae gravatar image

cable延迟数据:
150mm是0.65ns,
254mm是1.1ns,
635mm是2.75ns,
1000mm是4.33ns。

cable测试性能数据:
lvds lvcmos(1.8)
150mm: 1.4Gbps 150Mhz(单clock,非随路时钟,供参考)
254mm: 1.4Gbps 150Mhz(单clock,非随路时钟,供参考)
635mm: 1.4Gbps 120Mhz(单clock,非随路时钟,供参考)
1000mm: 1.4Gbps 105Mhz(单clock,非随路时钟,供参考)

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answered 2019-01-21 21:50:43 -0600

nick qian gravatar image

updated 2019-01-31 18:02:45 -0600

可以估算每17cm需要1ns \r 20cm cable大概需要1.2ns
40cm cable大概需要2.4ns
60cm cable大概需要3.5ns

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Asked: 2019-01-21 01:51:14 -0600

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Last updated: Apr 19 '22