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AFBR-7QER03Z Datasheet(PDF) 3 Page - AVAGO TECHNOLOGIES LIMITED |
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AFBR-7QER03Z Datasheet(HTML) 3 Page - AVAGO TECHNOLOGIES LIMITED |
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3 / 15 page  3 Figure 2. Application Reference Diagram ASIC (SerDes) Rx 1 Rx 2 Rx 3 Rx 4 Tx 4 Tx 3 Tx 2 Tx 1 Tx In p Tx In n Rx Out p Rx Out n Host Board (Only one channel shown for simplicity) QSFP + Module Rx Tx Control Signal Interface The module has the following low speed signals for control and status: ModSelL, LPMode, ResetL, ModPrsL, IntL. In addition, there is an industry standard two wire serial interface scaled for 3.3 volt LVTTL. It is implemented as a slave device. Signals and timing characteristics are further defined in the Control Interface section. The registers of the serial interface memory are defined in the Memory Map section and corresponding Avago Technologies QSFP+ Memory Map document High Speed Signal Interface Figure 2 shows the interface between an ASIC/SerDes and the QSFP+ AOC. For simplicity, only one channel is shown. The high speed signal lines are AC-coupled 100 ohm differential lines. The AC coupling is inside the QSFP+ AOC and not required on the host board. The 100 ohm differential terminations are inside the QSFP+ AOC for the transmitter lines and at the host ASIC/SerDes for the receiver lines. All transmitter and receiver electrical channels are compliant to module XLPPI specifications per IEEE 802.3ba. Regulatory & Compliance Issues Various standards and regulations apply to the cables. These include eye-safety, EMC, ESD and RoHS. See the Regulatory Section for details, including component recognition. Please note the transmitter is a Class 1M laser product – In the event of fiber breakage, DO NOT VIEW RADIATION DIRECTLY WITH OPTICAL INSTRUMENTS. See Regulatory Compliance Table for details. Package Outline The module is designed to meet the package outline defined in the SFF-8436 Specification for QSFP+ Optical Modules. See the package outline and host board foot- print figures (Figures 10 – 13) for details. Handling and Cleaning The Active Cable-end can be damaged by exposure to current surges and over voltage events. Care should be taken to restrict exposure to the conditions defined in the Absolute Maximum Ratings. Wave soldering, reflow soldering and/or aqueous wash process with the modules on board are not recommended. Normal handling precautions for electrostatic discharge sensitive devices should be observed. |
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