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by lee_s
3520 days ago
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They aren't dumb cables anymore is why. I'll use Thunderbolt 3 as the example because it's the most stringent. At the 40G signalling it uses the connector loss is extremely high. The maximum passive cable you can have is << 1 m before the rx will start to encounter bit-errors. This forces manufactures to put re-drivers in the ends of the cable to boost the signal, which is obviously expensive. Even just USB-C charging cables that need high-voltage have chips in each end to negotiate the correct protocol for both the devices and the cable. |
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