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| BCM8020 (R) 8-CHANNEL MULTIRATE 1.0-3.2-GBPS TRANSCEIVER FEATURES * 8 independent transceivers supporting multiple data rates from 1.0 Gbps to 3.2 Gbps including 1.06 Gbps, 1.25 Gbps, 2.12 Gbps, 2.488 Gbps, 2.5 Gbps, 2.667 Gbps, 3.125 Gbps, and 3.1875 Gbps Multiconfigurable to support various operating modes * Eight Independent 1.0 to 3.2-Gbps SerDes Channels * Dual quad 1.0 to 3.2-Gbps SerDes with channel alignment * SerDes-to-SerDes retimer mode: CML and XAUI interfaces * Full mesh switching maps any XAUI port to any XGMII port for full redundancy on both transmitter and receiver * Selectable TBI DDR/RTBI or XGMII parallel interface * HSTL (1.8V or 1.5V) and SSTL_2 parallel interface Low power dissipation * Less than 300 mW per transceiver channel including I/O High performance programmable Rx equalization and Tx preemphasis * Tx pre-emphasis for interoperability with CML SerDes * Rx equalization for copper interconnects Enhanced test capability * Serial and parallel loopback, BIST, 10G BERT, and random Ethernet packet generation * IEEE (1149.1) JTAG Compact 23-mm x 23-mm package with no external components required * No requirement for heat sink or airflow SUMMARY OF BENEFITS * One device supports a variety of applications including Gigabit Ethernet, 1x and 2x Fibre Channel, OC-48 SONET (with/without FEC), Infiniband, 10-Gigabit Ethernet, 10Gigabit Fibre Channel, or others. Flexible architecture supports programmable configurations enabling an aggregate data transfer rate of over 20 Mbps. Built-in redundancy mode provides high availability to support critical line side or backplane applications. The highspeed to high-speed retimer mode extends the use of longer traces on line card designs. Advanced 0.13- CMOS process technology provides unparalleled performance while achieving the lowest possible power consumption. Eases linecard designs to allow for multiple connectors or lowcost PCB materials such as FR4. Drive PMD devices or back-plane directly with no external clean-up circuit required. Simplifies manufacturability with integrated Built-in self-test (BIST), high-speed and low-speed loopbacks, and programmable PRBS generator/checker. Decreases complexity and reduces board space on multichannel line-card designs. * * * * * * * * * * * Tx BACKPLANE BCM8702 Rx BCM8020 ASIC/MAC BCM8020 2x XENPAK Tx BCM8702 2x XAUI 2x XGMII/TBI 2x XGMII/TBI 2x XAUI Rx 2 Independent Quad SerDes Application Diagram |
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