LFE2-50E-5FN484C LATTICE SEMICONDUCTOR, LFE2-50E-5FN484C Datasheet - Page 91
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LFE2-50E-5FN484C
Manufacturer Part Number
LFE2-50E-5FN484C
Description
IC, LATTICEECP2 FPGA, 420MHZ, FPBGA-484
Manufacturer
LATTICE SEMICONDUCTOR
Series
LatticeECP2r
Datasheet
1.LFE2-12E-5FN256C.pdf
(385 pages)
Specifications of LFE2-50E-5FN484C
No. Of Logic Blocks
48000
No. Of Macrocells
24000
No. Of Speed Grades
5
No. Of I/o's
339
Clock Management
DLL, PLL
I/o Supply Voltage
3.465V
Total Ram Bits
387Kbit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFE2-50E-5FN484C
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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Lattice Semiconductor
SERDES High Speed Data Receiver (LatticeECP2M Family Only)
Table 3-10. Serial Input Data Specifications
Input Data Jitter Tolerance
A receiver’s ability to tolerate incoming signal jitter is very dependent on jitter type. High speed serial interface stan-
dards have recognized the dependency on jitter type and have recently modified specifications to indicate toler-
ance levels for different jitter types as they relate to specific protocols (e.g. FC, etc.). Sinusoidal jitter is considered
to be a worst case jitter type.
Table 3-11. Receiver Total Jitter Tolerance Specification
Table 3-12. Periodic Receiver Jitter Tolerance Specification
RX-CID
V
V
V
V
T
Z
RL
1. This is the number of bits allowed without a transition on the incoming data stream when using DC coupling.
2. This is the typical number of bit times to re-lock to a new phase or frequency within +/- 300 ppm, assuming 8b10b encoded data.
3. AC coupling is used to interface to LVPECL and LVDS.
Deterministic
Random
Total
Deterministic
Random
Total
Deterministic
Random
Total
Deterministic
Random
Total
1. Values are measured with PRBS 2
2. Jitter specification is limited by measurement equipment capability.
Periodic
1. Values are measured with PRBS 2
2. Jitter specification is limited by measurement equipment capability.
RX-RELOCK
RX-TERM
RX-DIFF-S
RX-IN
RX-CM-DC
RX-CM-AC
Symbol
Description
Description
RX-RL
room temperature.
S
Stream of nontransitions
(CID = Consecutive Identical Digits) @ 10
Differential input sensitivity
Input levels
Input common mode range (DC coupled)
Input common mode range (AC coupled)
CDR re-lock time
Input termination 50/75 Ohm/High Z
Return loss (without package)
3.125 Gbps
2.5 Gbps
1.25 Gbps
250 Mbps
3.125 Gbps 600 mV differential eye
2.5 Gbps
1.25 Gbps
250 Mbps
Frequency
Frequency
2
2
2
600 mV differential eye
600 mV differential eye
600 mV differential eye
600 mV differential eye
600 mV differential eye
600 mV differential eye
600 mV differential eye
600 mV differential eye
600 mV differential eye
600 mV differential eye
600 mV differential eye
600 mV differential eye
600 mV differential eye
600 mV differential eye
600 mV differential eye
Description
7
7
-1, all channels operating, FPGA Logic active, I/Os around SERDES pins quiet, voltages are nominal,
-1, all channels operating.
1
Condition
Condition
3
-12
BER
3-40
1
Min.
Min.
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1
Min.
100
0.5
—
—
—
0
0
DC and Switching Characteristics
LatticeECP2/M Family Data Sheet
Typ.
Typ.
7 @ 3.125 Gbps
20 @ 1.25 Gbps
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Typ.
50
—
—
—
—
—
9
Max.
Max.
0.54
0.26
0.60
0.80
0.61
0.22
0.81
0.53
0.22
0.80
0.42
0.10
0.20
0.22
0.20
0.08
V
CCRX
Max.
3000
1.2
1.5
—
—
+ 0.8
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
Units
Units
mV, p-p
Ohms
Units
Bits
Bits
dB
V
V
V
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