ISL36411 Datasheet, PDF (1/12 Pages) Intersil Corporation – Quad Lane Extender

Quad Lane Extender
ISL36411
The ISL36411 is a settable quad receive-side equalizer
with extended functionality for advanced protocols
operating with line rates up to 11.1Gbps such as
InfiniBand (QDR) and 40G Ethernet (40GBase-CR4/
SR4). The ISL36411 compensates for the frequency
dependent attenuation of copper twin-axial cables,
extending the signal reach up to at least 10m on 28AWG
cable.
The small form factor, highly-integrated quad design is
ideal for high-density data transmission applications
including active copper cable assemblies. The four
equalizing filters within the ISL36411 can each be set to
provide optimal signal fidelity for a given media and
length. The compensation level for the filters is set by
two external control pins.
Operating on a single 1.2V power supply, the ISL36411
enables per channel throughputs of 10Gbps to 11.1Gbps
while supporting lower data rates including 8.5, 6.25, 5,
4.25, 3.125, and 2.5Gbps. The ISL36411 uses current
mode logic (CML) inputs/outputs and is packaged in a
4mmx7mm 46-lead QFN. Individual lane LOS support is
included for module applications.
Typical Application Circuit
Features
• Supports four channels with data rates up to
11.1Gbps
• Low power (~110mW per channel)
• Low latency (<500ps)
• Four equalizers in 4mmx7mm QFN package for
straight route-through architecture and simplified
routing
• Equalizer boost is pin selectable
• Pin selectable equalizer boosts
• Supports 64b/66b encoded data - long run lengths
• Line silence preservation & individual lane LOS
support
• 1.2V power supply
• LOS support
Applications
• QSFP Active Copper Cable Modules
• InfiniBand QDR
• 40G Ethernet (40GBase-CR4/SR4)
• 100G Ethernet (100GBase-CR10/SR10)
• High-Speed Active Cable Assemblies
• High-Speed Printed Circuit Board (PCB) Traces
Benefits
• Thinner gauge cable
• Extends cable reach 3x
• Improved BER
Tx1[P,N]
Tx2[P,N]
Tx3[P,N]
Tx4[P,N]
1.2V
10nF
0.1µF
TDSBL
IN1[P,N]
100pF
DE VDD
OUT1[P,N]
0.1µF
IN2[P,N] OUT2[P,N]
ISL35411
0.1µF
IN3[P,N] OUT3[P,N]
0.1µF
IN4[P,N] OUT4[P,N]
DT
1.2V
Active Copper Cable Assembly
8-Pair Differential 100ΩO
Twin-Axial Cable
= 10m 28AWG
1.2V
10nF
100pF
VDD CP LOSB
0.1µF
IN1[P,N] OUT1[P,N]
0.1µF
0.1µF
0.1µF
IN2[P,N] OUT2[P,N]
Host Channel
Adapter
Rx1[P,N]
Rx2[P,N]
ISL36411
0.1µF
IN3[P,N]
0.1µF
IN4[P,N]
1.2V
DT
0.1µF
OUT3[P,N]
0.1µF
OUT4[P,N]
Rx3[P,N]
Rx4[P,N]
Fabric Switch
Connector Paddle Card
Connector Paddle Card
March 25, 2010
FN6965.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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