Intel C2518 FH8065501516710 Data Sheet
Product codes
FH8065501516710
Volume 3—Signal Electrical and Timing Characteristics—C2000 Product Family
2.5 and 1 Gigabit Ethernet (GbE) Interface
Intel
®
Atom™ Processor C2000 Product Family for Microserver
Datasheet, Vol. 3 of 3
September 2014
644
Order Number: 330061-002US
33.3.3
2500BASE-X (2.5 GbE)
The SoC can operate at a 2.5 Gb/s data rate using 1000BASE-KX. This mode uses a
3.125-GHz clock rate and requires the GbE reference clock input to be 125 MHz instead
of 100 MHz. See
. For other
electrical parameters refer to
33.3.3.1
Transmitter Characteristics
Transmitter characteristics at Test Point 1 (TP1) are summarized in
location of TP1 is shown in
. The signaling speed shall be 3.125
GBd ±100 ppm. The corresponding unit interval is nominally 320 ps.
Table 33-6. Transmitter Characteristics
Parameter
Refer to
Value
Units
Signaling speed, per lane
3.125 ± 100 ppm
GBd
Differential peak-to-peak output voltage
800 to 1200
mV
Differential peak-to-peak output voltage (max.) with
TX disabled
30
mV
Common-mode voltage limits
–0.4 to 1.9
V
Differential output return loss (min.)
See the two equations
in
dB
Differential output template
See
and
V
Transition time
1
(20%-80%)
1. Transition time parameters are recommended values, not compliance values.
60 to 130
ps
Output jitter (max. peak-to-peak), Random jitter
0.27
UI
Output jitter (max. peak-to-peak), Deterministic jitter
0.17
UI
Output jitter (max. peak-to-peak), Total jitter
2
2. At BER 10
–12
.
0.35
UI