LFE3-95E-PCIE-DKN Lattice, LFE3-95E-PCIE-DKN Datasheet - Page 63

• 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
LVPECL33
The LatticeECP3 devices support the differential LVPECL standard. This standard is emulated using complemen-
tary LVCMOS outputs in conjunction with a parallel resistor across the driver outputs. The LVPECL input standard
is supported by the LVDS differential input buffer. The scheme shown in Figure 3-3 is one possible solution for
point-to-point signals.
Figure 3-3. Differential LVPECL33
Table 3-3. LVPECL33 DC Conditions
16mA
16mA
V
V
V
Z
R
R
R
V
V
V
V
Z
I
1. For input buffer, see LVDS table.
DC
CCIO
CCIO
OUT
OH
OL
OD
BACK
CCIO
T
CM
S
P
Parameter
(+/-5%)
(+/-5%)
On-chip
= 3.3V
= 3.3V
R
R
Over Recommended Operating Conditions
Output Driver Supply (+/-5%)
Driver Impedance
Driver Series Resistor (+/-1%)
Driver Parallel Resistor (+/-1%)
Receiver Termination (+/-1%)
Output High Voltage
Output Low Voltage
Output Differential Voltage
Output Common Mode Voltage
Back Impedance
DC Output Current
S
S
Off-chip
= 93.1 ohms
= 93.1 ohms
(+/-1%)
(+/-1%)
1
Description
Zo = 100 ohm differential
R
P
Transmission line,
= 196 ohms
(+/-1%)
3-11
R
T
= 100 ohms
DC and Switching Characteristics
(+/-1%)
LatticeECP3 Family Data Sheet
Typical
12.11
100.5
3.30
2.05
1.25
0.80
1.65
196
100
10
93
Off-chip
Units
mA





V
V
V
V
V
On-chip
+
-