O V ERVI EW

®

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.

8211-PB06-R

07/02/04

or its subsidiaries in the United States and certain other countries. All other trademarks mentioned are the

property of their respective owners.

The BCM8211 SONET/SDH transceiver is a fully integrated

serialization/deserialization SONET OC-48 and SDH STM-16 (2.488

Gbps) interface device with an integrated Clock Multiplication Unit

(CMU) and an integrated Clock and Data Recovery (CDR) circuit. On-

chip clock synthesis is performed by the high-frequency, low-jitter,

phase-locked loop on the BCM8211 transceiver, allowing the use of a

slower 77.76/155.52 MHz external transmit clock reference.

Dual RX and TX 2.488-Gbps interfaces support dual-fiber ring

architectures. Clock recovery is performed on the device by

synchronizing its on-chip VCO directly to the incoming data stream.

The low-jitter LVPECL/CMOS interface guarantees compliance with

the bit error rate requirements of the Telcordia GR-253-CORE, ANSI,

and ITU-T standards. The BCM8211 is packaged in a 14 x 20 mm, 128-

pin PQFP.

The BCM8211 operates in either single 2.5V or dual 2.5/3.3V

configuration. The core and CML I/O operate at 2.5V and the LVPECL

I/O can operate at either 2.5V or 3.3V.

F

F

C

D

E

CLK16IP

CLK16IN

DI0

DI15

RESETB

CKSEL

RTSYNC

REF155EN

TXDP

TXDN

TXCKP

TXCKN

TCK16ON

TCK16OP

TXLKDT

RCK16ON

RCK16OP

DO0

DO15

LOSB

RXLKDT

OVFB

REFCKP

REFCKN

DOSQ

RCK16SQ

RDINP0

RDINN0

RDINP1

RDINN1

SELRD1

CLKPMODE

DATPMODE

LOSIB

LP BKFB

TSEL

LPBKSB

A

W

rite

P

ointer

R

ead

P

ointer

O

utput

R

etime

FIFO

C

ontrol

D

E

C

B

E

D

A

B

M

U

X

2.488-GH

z PLL

M

U

X

D

ivide-by-16

M

U

X

CDR

D

ivide-by-16

L

oop-

back

L

ogic

L

oss Detect