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PX6514 4 x 10 Gb/s VCSEL Driver Product Brief
April 2006 Features * * * * Single +3.3 V supply dissipating 140 mW per channel 4-channel VCSEL driver operates from DC to 10.7 Gb/s Serial digital interface for global and individual channel control Individual channel control for enable, modulation current, bias current, and VCSEL fault control Adjustable temperature compensation for VCSEL bias and modulation current VCSEL fault detection with autonomous fault handling and interrupt Adjustable VCSEL peaking control 250-micron channel pitch matches optical ribbon fiber and VCSEL arrays Differential CML compatible inputs with on-chip termination Description The growing use of the Internet has created increasingly higher demand for multi-Gb/s I/O performance. The demand for 100 Gb/s+ WAN bandwidth fuels the growth of short-reach 40 Gb/s infrastructures within high-end telco and datacom routers, switches, servers and other proprietary chassis-to-chassis links. The Zarlink PX6514 4x10 Gb/s VCSEL Driver is a four-channel VCSEL driver designed for various 4x10 Gb/s parallel optics and CWDM PMD applications. It consists of a DC-coupled amplifier with selectable modulation and bias currents optimized for driving commercially available, common cathode VCSELs from a single +3.3 V supply. Individual channel settings are used to control the modulation and bias current and their temperature coefficients, allowing the optical output power and extinction ratio to be optimized. Data controlling the Primarion PX6514 VCSEL driver settings is loaded by a simple four-wire CMOS compatible serial interface that features read/write and daisy chain capabilities.
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Applications * 4-lane 10GbE, 10GFC, 8GFC, 4GFC, and OC-192 VSR parallel optical modules Proprietary OC-768 parallel optics and CWDM Proprietary 4-lane intra-system parallel optics
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Zarlink Semiconductor Inc.
PX6514
Figure 1: 10 Gb/s PRBS31 optical data pattern
Product Brief
Figure 2: Application block diagram utilizing the PX6514 VCSEL driver and the PX6524 optical receiver.
PX6514
50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms MICRO CONTROLLER 2-Wire Interface DATA DATA CLK STB 4-Wire Interface TX_IN0_P TX_IN0_N TX_IN1_P TX_IN1_N TX_IN1_P TX_IN1_N GND TX_IN3_P TX_IN3_N GND D_IN D_OUT CLK STB TX_OUT3 GND TX_OUT2 GND TX_OUT1 TX_OUT0
TX Data
Optical Fiber
DATA CLK
OPTIONAL MICRO CONTROLLER 2-Wire Interface DATA DATA CLK STB
4-Wire Interface
PX6524
D_IN D_OUT CLK STB RX_OUT0_P RX_OUT0_N RX_OUT1_P RX_OUT1_N RX_OUT2_P RX_OUT2_N RX_OUT3_P RX_OUT3_N RX_IN3 RX_IN2 PD_BIAS RX_IN1 PD_BIAS PD_BIAS RX_IN0 PD_BIAS
DATA CLK
50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms
RX Data
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Zarlink Semiconductor Inc.
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