BCM8421 ? intelligent 1/2/4g fibre channel retimer/repeater with eyeopener ? BCM8421 functional block diagram ? dual eyeopener exceeding fi bre channel optical and inter-cabinet jitter specifications multi-rate support for new and legacy systems active-signal integrity (active-si) monitors physical layer and active-link integrity (active-li) monitors link-layer performance programmable transmit output levels and receive los detection high-performance receive equalization and programmable transmit pre-emphasis per channel link led drivers for valid fibre channel frames and speed detection developed using advanced 0.13u cmos process technology guarantees jitter and bit-error-rate performance on optical and fiber links supports legacy 1.0625 gb and 2.125 gb applications and new 4.25 gb data rates off a single reference clock frequency on-chip intelligent diagnostics provides insight to the signal quality with detect ion and recovery mechanisms on each high-speed link optimizes channel performance for lower power and signal detection through on-chip 2-wire control interface transmits and receives over long distances of copper cables or backplanes with 16 levels of programmable pre-emphasis provides visual indications on pcbs for link status and 1.0625 gb, 2.125 gb, or 4.25 gb data rate transmissions low power design of ~1w with small footprint package in a 13 mm x 13 mm bga, with 1 mm ball pitch features summary of benefits fc switch 20 port fc switch 20 port fc switch 20 port fc switch 20 port sfp BCM8421 2- port pbc/ retimer BCM8421 2- port pbc/ retimer BCM8421 2- port pbc/ retimer BCM8421 intelligent eyeopener sfp BCM8421 2- port pbc/ retimer BCM8421 2- port pbc/ retimer BCM8421 2- port pbc/ retimer sfp BCM8421 2- port pbc/ retimer BCM8421 2- port pbc/ retimer BCM8421 2- port pbc/ retimer BCM8421 intelligent eyeopener BCM8421 intelligent eyeopener
overview ? phone: 949-450-8700 fax: 949-450-8710 e-mail: info@broadcom.com web: www.broadcom.com broadcom corporation 16215 alton parkway, p.o. box 57013 irvine, california 92619-7013 ? 2004 by broadcom corporation. all rights reserved. 8421-pb00-r 02/13/04 broadcom ? , the pulse logo, and connecting everything ? are trademarks of broadcom corporation and/ or its subsidiaries in the united states and certain other countries. all other trademarks mentioned are the property of their respective owners. the BCM8421 is a high-performance and low-jitter intelligent retimer/repeater eyeopener ? device designed to drive optical and copper ports in fibre channel applications. each port of the BCM8421 can be independently configured as a retimer or a repeater operating at the fibre channel data rates of 1.0625 gbps, 2.125 gbps, and 4.25 gbps. with an on-chip low-jitter phase- locked loop (pll), the BCM8421 exceeds fibre channel optical and inter-cabinet jitter specifications. the BCM8421 features active signal integrity (active-si), which allows monitoring of the received signal at each high- speed port to determine signal eye quality and bit error rate (ber) for system diagnostics, fault isolation, optics aging, and maintenance. an on-chip pattern generator/checker is provided with internal loopback capability on each i/o port. the BCM8421 also features active link integrity (active- li), which is a set of advance link integrity functions performing data generation and checking on transmitted fibre channel data. the combination of active-si and active-li improves storage system?s reliability, availability, and serviceability (ras) with the ability to monitor and diagnose system integrity. data from each port can be optionally retimed utilizing an elastic fifo and local crystal reference clock eliminating jitter transfer. the BCM8421 can also be configured to operate in repeater mode for low latency. the BCM8421 is available in a 13 mm x 13 mm bga package. cdr pll logic control power o0 i0 i1 o1 fref (106.25 mhz) 2-wire serial interface 1.2v 3.3v cdr pbert active si active li cdr pll logic control power o0 i0 i1 o1 fref (106.25 mhz) 2-wire serial interface 1.2v 3.3v cdr pbert active si active li
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