BCM8040®QUAD XAUI™/CX4/LX4 1.0–3.2-GBPS RETIMER/SWITCHDual Independent XAUI Cross-Link Application Diagram• Eight independent retimer channels supporting multiple datarates from 1.0 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, and3.1875 Gbps• Multiconfigurable to support various operating modes• Eight independent 1.0- to 3.2-Gbps retiming channels (singleclock domain)• DualXAUI™/CX4/LX4toXAUI/CX4/LX4retimingchannels with redundancy compatible to IEEE802.3™ae• Dual XAUI/CX4/LX4 to XAUI/CX4/LX4 retiming switch• Low power dissipation• Less than 400 mW per retiming/switch channel including I/O• High-performance programmable receive equalization andtransmit pre-emphasis• Transmit pre-emphasis for interoperability with CML SerDes• Receive equalization for copper interconnects• Enhanced test capability• Full loopback, BIST, 10G BERT, and random Ethernet packetgeneration• Compact 23-mm × 23-mm package with no externalcomponents required• No requirement for heat sink or airflow• One device supports a variety of applications including GigabitEthernet, 1× and 2× Fibre Channel, OC-48 SONET (with/withoutFEC), InfiniBand®, 10-GbE, 10-Gigabit Fibre Channel, or others.• Flexible architecture supports programmable configurationsenabling an aggregate usable data rate of over 40 Mbps. Built-inredundancy mode provides high availability to support critical lineside or backplane applications. The high-speed to high-speedretimer mode extends the use of longer traces on line-card designs.• Advanced 0.13µ CMOS process technology provides unparalleledperformance while achieving the lowest possible powerconsumption.• Eases linecard designs to allow for multiple connectors or low-costPCB materials such as FR4.• Drive PMD devices or backplane directly with no external cleanupcircuit required.• Simplifies manufacturability with integrated built-in self-test(BIST), full loopbacks, and programmable PRBS generator/checker.• Decreases complexity and reduces board space on multichannellinecard designs.FE A T UR E SSU MM AR Y O F B E N E FI TS• 1-GbE and 10-GbE LAN, MAN, WAN switches and routers• 1×, 2×, or 10-Gigabit Fibre Channel, InfiniBand, SONET network cards• 40-Gbps backplanes and backplane extenders• Advanced test equipment (ATE)APPL IC ATI O N S
