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Technical Specifications
E2969-91020
PCI Express High Speed Parameters
In some parameters the PTC slightly differs from the PCI Express
specification.
Differential Receiver Output Specification
Parameter
Maximum Time for
transition to a valid
electrical idle
Electrical Idle differential
peak output voltage
Differential Receiver Input Specification
Parameter
AC Peak Common Mode
Voltage
Powered Down DC Input
Impedance
Electrical Idle Detect
Threshold
PTC Value
40 ms
Initially 1.4 Volts, after
30 µs below 20 mV
PTC Value
100 mV
50 Ohms
Electrical Idle detection
is not threshold based
Appendix
PCI Express Spec
20 UI
20 mV
Spec requirement
150 mV
200 kOhms
Between 65 and 175 mV
5-9
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