PM3386 Datasheet, PDF (309/315 Pages) PMC-Sierra, Inc – Dual Gigabit Ethernet Controller

RELEASED
DATASHEET
PMC-1991129
ISSUE 7
PM3386
DUAL GIGABIT ETHERNET CONTROLLER
Table 54. SERDES Transmit Data Timing
Symbol
Ftx
Fdev
DJtx
TJtx
Parameter
Nominal Transmit Frequency
Frequency Deviation from Nominal
Transmit Data Deterministic Jitter
(peak to peak above 637 KHz)
Transmit Data Total Jitter
(peak to peak above 637 KHz)
Min Typ
1.25
-100
Max Units
1.25 GHz
+100 ppm
0.100 UI
80 ps
0.265 UI
212 ps
Notes on Transmit Data Timing:
1. Total jitter includes both deterministic jitter and random jitter.
2. Values are measured with each PECL output AC coupled into a 50 Ohm impedance
(100 Ohms differential impedance).
3. Rise time is measured from the 20% threshold of the reference signal to the 80%
threshold of the reference signal.
4. Fall time is measured from the 80% threshold of the reference signal to the 20%
threshold of the reference signal.
5. Jitter and skew are specified between crossings of the 50% threshold of the
reference signal.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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