BCM8426 ® 12-CHANNEL 1/2/4G FIBRE CHANNEL INTELLIGENT LOOP CIRCUIT WITH EYEOPENER® SUMMARY OF BENEFITS FEATURES • 12-channel intelligent loop circuit to configure Fibre Channel • Low-cost backend solution for Fibre Channel disk drive hard disk drives in FC-AL loops arrays • Integrated EyeOpener® per channel, exceeding Fibre Channel • Guarantees jitter and bit-error-rate performance on optical signalling specifications and fiber links • Multirate support for new and legacy systems • Supports legacy 1.0625-GbE and 2.125-GbE applications and new 4.25G data rates off a single reference clock frequency • Active signal integrity (Active-SI) monitors physical layer and • On-chip intelligent diagnostics provides insight to the signal Active link integrity (Active-LI) monitors link-layer performance quality with detection and recovery mechanisms on each high-speed link • Programmable transmit output levels and receive LoS • Optimizes channel performance for lower power and signal detection detection through an on-chip 2-wire control interface • High performance receive equalization and programmable • Transmits and receives over long distances of copper cables or transmit pre-emphasis backplanes with 16 levels of programmable pre-emphasis • Developed using advanced 0.13μ CMOS process technology • Low power design of ~4W with small footprint package in a 21-mm x 21-mm BGA, with 1-mm ball pitch Functional Block Diagram Disk 0 FC Port FC Link 1.0625G 2.125G 4.25G FC Port Disk 1 BCM8426 FC Port FC Port Intelligent Loop Circuit BCM8426 FC Link 1.0625G 2.125G 4.25G Intelligent Loop Circuit Disk 9 FC Port FC Port Loop A Loop B Disk 0 FC Port FC Port Disk 1 BCM8426 FC Port FC Port Intelligent Loop Circuit BCM8426 Intelligent Loop Circuit Disk 9 FC Port Additional IBOD Arrays FC Port Additional IBOD Arrays OVERVIEW BCM8426 CDR I5 O6 O5 I6 CDR I4 O7 CDR Active SI Active LI O4 I3 I7 CDR O8 CDR O3 I8 CDR I2 O9 CDR O2 I9 CDR PBERT I1 O10 CDR O1 I10 CDR I0 O11 CDR O0 I11 CDR PLL Logic Control Fref (106.25-MHz) Dual 2-Wire Serial Interface Power 1.2V 3.3V BCM8426 Block Diagram The BCM8426 is an intelligent backend loop circuit that facilitates the implementation of an intelligent bunch of disks (IBOD) on Fibre Channel storage array systems. The BCM8426 has an integrated EyeOpener® designed on-chip to drive optical and copper ports in fibre channel applications. Each port of the BCM8426 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 BCM8426 exceeds Fibre Channel signal quality specifications. The BCM8426 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 BCM8426 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 BCM8426 can also be configured to operate in repeater mode for low latency. The BCM8426 is available in a 21-mm x 21-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. 8426-PB01-R 04/14/06 Phone: 949-450-8700 Fax: 949-450-8710 E-mail: [email protected] Web: www.broadcom.com