AFBR-810BxxxZ and AFBR-820BxxxZ Twelve-Channel Transmitter and Receiver Pluggable, Parallel-Fiber-Optic Modules Data Sheet Description Features The AFBR-810B Twelve-Channel, Pluggable, Parallel-Fiber- High Channel Capacity: 120 Gbps per module Optic Transmitter and AFBR-820B Twelve-Channel, High port density: 19 mm lateral port pitch < 0.51 mm/ Pluggable, Parallel-Fiber-Optic Receiver are high per- Gbps for TxRx pair formance fiber Optic modules for short-range parallel Low power consumption per Gbps: < 42 mW/Gb/s for multi-lane data communication and interconnect ap- TxRx pair plications. These 12-channel devices are capable of 10.0 Gbps per channel, 120 Gbps raw aggregate operation. Based on industry-standard, pluggable, SNAP12 form The modules are designed to operate over multimode factor with upgraded pinout for improved signal fiber systems using a nominal wavelength of 850 nm. The integrity and keyed to prevent mis-plugging with first electrical interface uses a 10x10 MEG-Array low-profile generation SNAP12 devices mezzanine connector. The optical interface uses a MTP Twelve independent channels per module (MPO) 1x12 ribbon cable connector. The thermal interface Separate transmitter and receiver modules can be a factory installed heatsink for air-cooled systems or thermal seating plane for user flexibility. The modules 850 nm VCSEL array in transmitter PIN array in receiver incorporate high performance, highly reliable, short Operates up to 10 Gbps with 8b/10b compatible coded wavelength optical devices coupled with proven circuit data technology to provide long life and consistent service. Links up to 50 m at 10 Gbps with 2000 MHzkm 50 um MMF Applications Two power supplies, 2.5 V and 3.3 V, for low power High Performance and High Productivity computer consumption interconnects Dedicated signals for module address, module reset InfiniBand QDR SX interconnects and host interrupt. Datacom switch and router backplane connections Two Wire Serial (TWS) interface with maskable interrupt Telecom switch and router backplane connections for expanded functionality including: Individual channel functions: disable, squelch Part Number Ordering Options disable, lane polarity inversion, margin Transmitter Part Numbers Programmable equalization integrated with DC AFBR-810BZ With Fin heat sink / no EMI nose clip blocking caps at transmitter data input AFBR-810BEZ With Fin heat sink / EMI nose clip AFBR-810BPZ With Pin heat sink / no EMI nose clip Programmable receiver output swing and de- AFBR-810BEPZ With Pin heat sink / EMI nose clip emphasis level AFBR-810BHZ With no heat sink / no EMI nose clip A/D readback: module temperature and supply AFBR-810BEHZ With no heat sink/ EMI nose clip voltages, per channel laser current and laser power, Receiver Part Numbers or received power AFBR-820BZ With Fin heat sink / no EMI nose clip Status: per channel Tx fault, electrical (transmitter) AFBR-820BEZ With Fin heat sink / EMI nose clip or optical (receiver) LOS, and alarm flags AFBR-820BPZ With Pin heat sink / no EMI nose clip 0 to 70C case temperature operating range AFBR-820BEPZ With Pin heat sink / EMI nose clip AFBR-820BHZ With no heat sink / no EMI nose clip AFBR-820BEHZ With no heat sink/ EMI nose clip Patent - www.avagotech.com/patents Transmitter Module The optical transmitter module (see Figure 1) incorporates disable the squelch function and program input equaliza- a 12-channel VCSEL (Vertical Cavity Surface Emitting Laser) tion levels to reduce the effect of long PCB traces. A reset array, a 12-channel input buffer and laser driver, diagnos - for the control registers is available. Serial ID information tic monitors, control and bias blocks. The transmitter is and alarm thresholds are provided. To reduce the need for designed for IEC-60825 and CDRH eye safety compliance polling, the TWS interface is augmented with an interrupt Class 1M out of the module. The Tx Input Buffer provides signal for the host. CML compatible differential inputs (presenting a nominal Alarm thresholds are established for the monitored differential input impedance of 100 Ohms and a nominal attributes. Flags are set and interrupts generated when common mode impedance to signal ground of 25 Ohms) the attributes are outside the thresholds. Flags are also set for the high speed electrical interface that can operate and interrupts generated for loss of input signal (LOS) and over a wide common mode range without requiring DC transmitter fault conditions. All flags are latched and will blocking capacitors. For module control and interroga- remain set even if the condition initiating the latch clears tion, the control interface (LVTTL compatible) incorpo- and operation resumes. All interrupts can be masked and rates a Two Wire Serial (TWS) interface of clock and data flags are reset by reading the appropriate flag register. The signals and dedicated signals for host interrupt, module optical output will squelch for loss of input signal unless address setting and module reset. Diagnostic monitors for squelch is disabled. Fault detection or channel deactiva- VCSEL bias, light output (LOP), temperature, both supply tion through the TWS interface will disable the channel. voltages and elapsed operating time are implemented Status, alarm and fault information are available via the and results are available through the TWS interface. TWS interface. The interrupt signal (selectable via the TWS Over the TWS interface, the user can, for individual interface as a pulse or static level) is provided to inform channels, control (flip) polarity of the differential inputs, hosts of an assertion of an alarm, LOS and/or Tx fault. de-activate channels, place channels into margin mode, Tx Input Buer Laser Driver Din 11:0 p/n (24) 12 Channels 12 Channels SCL SDA IntL Control Diagnostic Monitors Adr 2:0 (3) ResetL Vcc33 (4) Bias Vcc25 (2) Gnd Figure 1. Transmitter Block Diagram 2 Electrical Interface 1 x 12 VCSEL Array Optical Interface