LFE3-95E-PCIE-DKN Lattice, LFE3-95E-PCIE-DKN Datasheet - Page 89

• Manufacturer Part Number: LFE3-95E-PCIE-DKN
• Description: MCU, MPU & DSP Development Tools LatticeECP3 PCI Express Dev Kit
• Manufacturer: Lattice

Specifications of LFE3-95E-PCIE-DKN

• Processor To Be Evaluated: LFE3-95EA-x
• Processor Series: LatticeECP3
• Interface Type: SPI
• Operating Supply Voltage: 1.2 V to 3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Lattice Semiconductor
SERDES High Speed Data Receiver
Table 3-9. 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 specifications to indicate tolerance levels for differ-
ent jitter types as they relate to specific protocols. Sinusoidal jitter is considered to be a worst case jitter type.
Table 3-10. Receiver Total 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. LVDS interfaces are found in laser drivers and Fibre Channel equipment. LVDS inter-
4. Up to 1.76V.
Deterministic
Random
Total
Deterministic
Random
Total
Deterministic
Random
Total
Deterministic
Random
Total
Note: Values are measured with CJPAT, all channels operating, FPGA Logic active, I/Os around SERDES pins quiet, voltages are nominal,
room temperature.
RX-RELOCK
RX-TERM
RX-DIFF-S
RX-IN
RX-CM-DC
RX-CM-AC
Symbol
faces are generally found in 622 Mbps SERDES devices.
RX-RL
Description
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)
SCDR re-lock time
Input termination 50/75 Ohm/High Z
Return loss (without package)
3.125 Gbps
2.5 Gbps
1.25 Gbps
622 Mbps
Frequency
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
1
Description

Condition
3
-12
BER
3-37
3.125G
2.5G
1.485G
622M
270M
155M
Min.
—
—
—
—
—
—
—
—
—
—
—
—
DC and Switching Characteristics
-20%
Min.
150
0.6
0.1
10
—
—
—
—
—
—
—
0
LatticeECP3 Family Data Sheet
Typ.
—
—
—
—
—
—
—
—
—
—
—
—
50/75/HiZ
1000
Typ.
—
—
—
—
—
—
—
—
—
—
—
Max.
0.47
0.18
0.65
0.47
0.18
0.65
0.47
0.18
0.65
0.47
0.18
0.65
V
V
CCA
CCA
+20%
V
Max.
1760
136
144
160
204
228
296
CCA
—
—
+0.5
+0.2
4
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
mV, p-p
Ohms
Units
Bits
Bits
dB
V
V
V