
USB 3.0 Key Considerations
Receiver Testing Now
Required
– Jitter tolerance
– SSC, Asynchronous Ref
Clocks can lead to
interoperability issues
Channel Considerations
– Need to consider
transmission line effects
– Software channel
emulation for early
designs
New Challenges
– 12” Long Host Channels
– Closed Eye at Rx
– Equalization
– De-emphasis at Tx
– Continuous Time
Linear Equalizer
(CTLE) at Rx
Source: USB 3.0 Rev 1.0 Specification
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