RTL8111E データシートの表示（PDF） - Realtek Semiconductor
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RTL8111E Datasheet PDF : 39 Pages
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RTL8111E
Datasheet
8.8. PCI Express Bus Parameters
8.8.1. Differential Transmitter Parameters
Table 21. Differential Transmitter Parameters
Symbol
Parameter
Min Typical Max Units
UI
Unit Interval
399.88
400
400.12
ps
VTX-DIFFp-p
Differential Peak to Peak Output Voltage
0.800
-
VTX-DE-RATIO
De-Emphasized Differential Output Voltage (Ratio)
-3.0
-3.5
TTX-EYE
Minimum TX Eye Width
0.75
-
TTX-EYE-MEDIAN-
to-MAX-JITTER
Maximum Time between The Jitter Median and
Maximum Deviation from The Median
-
-
TTX-RISE, TTX-FALL D+/D- TX Output Rise/Fall Time
0.125
-
VTX-CM-ACp
RMS AC Peak Common Mode Output Voltage
-
-
VTX-CM-DCACTIVE- Absolute Delta of DC Common Mode Voltage During
0
-
IDLEDELTA
L0 and Electrical Idle
VTX-CM-DCLINE-
DELTA
Absolute Delta of DC Common Mode Voltage
between D+ and D-
0
-
VTX-IDLE-DIFFp
Electrical Idle Differential Peak Output Voltage
0
-
VTX-RCV-DETECT
The Amount of Voltage Change Allowed During
Receiver Detection
-
-
1.05
V
-4.0
dB
-
UI
0.125
UI
-
UI
20
mV
100
mV
25
mV
20
mV
600
mV
VTX-DC-CM
The TX DC Common Mode Voltage
0
-
ITX-SHORT
TX Short Circuit Current Limit
-
-
TTX-IDLE-MIN
Minimum Time Spent in Electrical Idle
50
-
TTX-IDLE- SETTO-IDLE Maximum Time to Transition to A Valid Electrical Idle
-
-
After Sending An Electrical Idle Ordered Set
3.6
V
90
mA
-
UI
20
UI
TTX-IDLE-TOTO-
DIFF-DATA
Maximum Time to Transition to Valid TX
Specifications After Leaving An Electrical Idle
Condition
-
-
20
UI
RLTX-DIFF
Differential Return Loss
10
-
-
dB
RLTX-CM
Common Mode Return Loss
6
-
-
dB
ZTX-DIFF-DC
DC Differential TX Impedance
80
100
120
Ω
LTX-SKEW
Lane-to-Lane Output Skew
-
-
500+2*UI ps
CTX
AC Coupling Capacitor
75
-
200
nF
Tcrosslink
Crosslink Random Timeout
0
-
1
ms
Note1: Refer to PCI Express Base Specification, rev.1.1, for correct measurement environment setting of each parameter.
Note2: The data rate can be modulated with an SSC (Spread Spectrum Clock) from +0 to -0.5% of the nominal data rate
frequency, at a modulation rate in the range not exceeding 30kHz – 33kHz. The ±300ppm requirement still holds, which
requires the two communicating ports be modulated such that they never exceed a total of 600ppm difference.
Integrated Gigabit Ethernet Controller for PCI Express
27
Track ID: JATR-2265-11 Rev. 1.5
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