BCM8421KFB Broadcom, BCM8421KFB Datasheet - Page 2

• Manufacturer Part Number: BCM8421KFB
• Manufacturer: Broadcom

Specifications of BCM8421KFB

• Lead Free Status / RoHS Status: Not Compliant

The BCM8421 is a high-performance and low-jitter intelligent retimer/
repeater EyeOpener
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 intercabinet jitter specifications.
The BCM8421 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.
Broadcom
EyeOpener
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.
8421-PB01-R
O0
I0
®
®
, the pulse logo, Connecting everything
are among the trademarks of Broadcom Corporation and/or its affiliates in the United
04/14/06
®
Fref (106.25 MHz)
device designed to drive optical and copper ports
PLL
®
CDR
®
, the Connecting everything logo, and
BCM8421 Block Diagram
2-Wire Serial Interface
O V E R V I E W
Logic Control
Active SI
Active LI
PBERT
The BCM8421 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 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
1.2V
Power
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com
3.3V
O1
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