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LFE3-70EA-8FN1156C
LFE3-70EA-8FN1156C | |
|---|---|
| Manufacturer Part Number | LFE3-70EA-8FN1156C |
| Description | 66.5K LUTS, 490 I/O, SERDES, 1.2V, -8 SPEED, PB-FREE |
| Manufacturer | LATTICE SEMICONDUCTOR |
| LFE3-70EA-8FN1156C datasheets |
|
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PrevNext
Lattice Semiconductor
Serial Rapid I/O Type 2/CPRI LV E.24 Electrical and Timing Characteristics
AC and DC Characteristics
Table 3-15. Transmit
Symbol
Description
1
T
Differential rise/fall time
RF
Z
Differential impedance
TX_DIFF_DC
3, 4, 5
J
Output data deterministic jitter
TX_DDJ
2, 3, 4, 5
J
Total output data jitter
TX_TJ
1. Rise and Fall times measured with board trace, connector and approximately 2.5pf load.
2. Total jitter includes both deterministic jitter and random jitter. The random jitter is the total jitter minus the actual deterministic jitter.
3. Jitter values are measured with each CML output AC coupled into a 50-ohm impedance (100-ohm differential impedance).
4. Jitter and skew are specified between differential crossings of the 50% threshold of the reference signal.
5. Values are measured at 2.5 Gbps.
Table 3-16. Receive and Jitter Tolerance
Symbol
Description
RL
Differential return loss
RX_DIFF
RL
Common mode return loss
RX_CM
Z
Differential termination resistance
RX_DIFF
2, 3, 4, 5
J
Deterministic jitter tolerance (peak-to-peak)
RX_DJ
2, 3, 4, 5
J
Random jitter tolerance (peak-to-peak)
RX_RJ
2, 3, 4, 5
J
Sinusoidal jitter tolerance (peak-to-peak)
RX_SJ
1, 2, 3, 4, 5
J
Total jitter tolerance (peak-to-peak)
RX_TJ
T
Receiver eye opening
RX_EYE
1. Total jitter includes deterministic jitter, random jitter and sinusoidal jitter. The sinusoidal jitter tolerance mask is shown in Figure 3-18.
2. Jitter values are measured with each high-speed input AC coupled into a 50-ohm impedance.
3. Jitter and skew are specified between differential crossings of the 50% threshold of the reference signal.
4. Jitter tolerance, Differential Input Sensitivity and Receiver Eye Opening parameters are characterized when Full Rx Equalization is enabled.
5. Values are measured at 2.5 Gbps.
DC and Switching Characteristics
LatticeECP3 Family Data Sheet
Test Conditions
Min.
Typ.
20%-80%
—
80
80
100
—
—
—
—
Test Conditions
Min.
From 100 MHz to 2.5 GHz
10
From 100 MHz to 2.5 GHz
6
80
—
—
—
—
0.35
3-48
Max.
Units
—
ps
120
Ohms
0.17
UI
0.35
UI
Typ.
Max.
Units
—
—
dB
—
—
dB
100
120
Ohms
—
0.37
UI
—
0.18
UI
—
0.10
UI
—
0.65
UI
—
—
UI
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