BCM8422KFB

BCM8422 ® 4-CHANNEL 1/2/4G FIBRE CHANNEL INTELLIGENT LOOP CIRCUIT/ DUAL RETIMER/REPEATER WITH EYEOPENER® SUMMARY OF BENEFITS FEATURES • Four-channel loop circuit to configure Fibre Channel hard disk drives in FC-AL configurations • Low-cost backend solution for Fibre Channel disk drive arrays ® • Dual-channel retimer/repeater with EyeOpener exceeding Fibre Channel signalling specifications • Guarantees jitter and bit-error-rate performance on optical and fiber links • Multirate support for new and legacy systems • Supports legacy 1.0625G and 2.125G applications and new • 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 0.13μ CMOS process technology 4.25G data rates off a single reference clock frequency • On-chip intelligent diagnostics provides insight to the signal quality with detection and recovery mechanisms on each high-speed link • Optimizes channel performance for lower power and signal detection through an 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 1.0625G, 2.125G, or 4.25G data rate transmissions • Low power design of ~1.5W with small footprint package in a 13-mm x 13-mm BGA, with 1-mm ball pitch 4-Channel/EyeOpener® Functionality Host 1 Loop 1 RDN/P0 TDN/P0 RDN/P1 TDN/P1 BCM8422 BCM8422 RDN/P2 4-Channel Loop Circuit Host 2 TDN/P2 Dual EyeOpener Mode Loop 2 RDN/P3 TDN/P3 OVERVIEW I1 O2 CDR Active SI Active LI O1 I2 CDR I0 O3 CDR PBERT O0 I3 CDR BCM8421 PLL Logic Control Fref (106.25-MHz) 2-Wire Serial Interface Power 1.2V 3.3V BCM8422 Block Diagram The BCM8422 is an intelligent backend Fibre Channel loop circuit that facilitates the implementation of an intelligent bunch of disks (IBOD) on Fibre Channel storage array systems. The BCM8422 can also be configured as a dual retimer/repeater with EyeOpener® device designed to drive optical and copper ports in Fibre Channel applications. Each port of the BCM8422 can be independently configured as a retimer or 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 BCM8422 exceeds Fibre Channel signal quality specifications. The BCM8422 features 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 BCM8422 also features Active- LI, which is a set of advanced link integrity functions performing data generation and checking 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 using an elastic FIFO and local crystal reference clock, eliminating jitter transfer. The BCM8422 can also be configured to operate in repeater mode for low latency. The BCM8422 is available in a 13-mm x 13-mm BGA package. Broadcom®, the pulse logo, Connecting everything®, the Connecting everything logo, and EyeOpener® are among the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries and/or the EU. Any other trademarks or trade names mentioned are the property of their respective owners. ® BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013 © 2006 by BROADCOM CORPORATION. All rights reserved. 8422-PB01-R 04/14/06 Phone: 949-450-8700 Fax: 949-450-8710 E-mail: info@broadcom.com Web: www.broadcom.com