User's Manual

SU60-SIPT
Datasheet
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27
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Symbol Parameter Min. Typ. Max. Unit
T TX-EYE-MEDIAN-to-
MAX-JITTER
Maximum time between jitter median and
maximum deviation from median
- - 0.125 UI
T TX-RISE-FALL
Tx rise/fall time
Measured differentially from 20% to 80%
0.125 - - UI
RL TX-DIFF Tx package plus Si differential return loss 10 - - dB
RL TX-CM Tx package plus Si common mode return loss 6 - - dB
V TX-CM-AC-P Tx AC common mode voltage - 20 - mV
I TX-SHORT Tx short circuit current limit - - 90 mA
V TX-DC-CM Tx DC common mode voltage - - 3.6 V
V TX-CM-DC-ACTIVE-
IDLE-DELTA
Absolute delta of DC common mode voltage
during L0 and electrical idle.
0 - 100 mV
V TX-IDLE-DIFF-AC-p Electrical idle differential peak output voltage 0 - 20 mV
T TX-IDLE-MIN Minimum time spent in electrical idle 20 - - ns
T TX-IDLE-SET-TO-IDLE
Maximum time to transition to a valid electrical
idle after sending an electrical idle ordered set
- - 8 ns
T TX-IDLE-TO-DIFF-DATA
Maximum time to transition to valid diff signalling
after leaving electrical idle
- - 8 ns
T CROSLINK Crosslink random timeout - - 1.0 ms
C TX AC coupling capacitor 75 - 200 nF
Note: Over full range of values specified in the Recommended Operating Conditions unless otherwise
specified.
Table 25: PCI Express TX Output Specifications - 5GT/s
Symbol Parameter Min. Typ. Max. Unit
UI
Unit interval (UI)
The specified UI is equivalent to a tolerance of +/-
300ppm for each Refclk source. Period does not
account for SSC induced variations.
199.94 - 200.06
Ps
V TX-DIFF-PP
Differential peak-to-peak TX voltage swing
V TX-DIFF-PP =2* │ V TXD+ – V TXD- │
0.8 - 1.2 V
V TX-DIFF-PP-LOW
Low power differential peak-to-peak TX voltage
swing
V TX-DIFF-PP =2* │ V TXD+ – V TXD- │
0.4 - 1.2 V
V TX-DE-RATIO-3.5dB Tx de-emphasis level ratio (3.5dB) 3.0 - 4.0 V
V TX-DE-RATIO-6dB Tx de-emphasis level ratio (6dB) 5.5 - 6.5 V
T MIN-PULSE
Instantaneous lone pulse width
Measured relative to rising/failing pulse
0.9 - - UI
T TX-EYE Tx eye including all jitter sources 0.75 - - UI
T TX-HF-DJ-DD
Tx deterministic jitter > 1.5MHz
Deterministic jitter only
- - 0.15 UI