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PHYSICAL LAYER PRODUCTS
VSC8222 VSC8223
Multi-rate SONET/SDH, Fibre Channel, and Gigabit Ethernet CDR
F E AT U R E S : Multi Rate Operation: - OC-48/12/3 and (STM-16/4/1) and FEC - 1.0625 Gbps and 2.125 Gbps Fibre Channel - 1.25 Gbps and 2.5 Gbps Gigabit Ethernet Adjustable Loop Bandwidth Loss of Signal (LOS) and Loss of Lock (LOL) Status Indication Automatic and Manual Lock to Reference Clock: - Internal PLL Maintains Clock Output in the Absence of Data Selectable CRU Bypass Mode On-chip Input and Output Termination Selectable LVPECL Reference Frequencies: - 19.44 MHz, 77.76 MHz, or 155.52 MHz (or FEC) - Equivalent Fibre Channel/Gigabit Ethernet - Other Allowable Frequencies 0.18 m CMOS Technology 100 mV Differential Input Sensitivity 500 mV Typical Differential Data Output Swing
A P P L I C AT I O N S : SONET/SDH Systems DWDM Systems Optical Transponders/Transceivers Fibre Channel Networks Gigabit and Fast Ethernet Systems Performance Monitoring Systems Optical Test Equipment
S P E C I F I C AT I O N S : VSC8222 - Rates: OC-48/12/3, (STM-16/4/3), FEC, GbE, Fibre Channel and Others - Power Dissipation: 400 mW - Supply Voltage: 2.5 V - 7x7mm, 48-pin Thermally Enhanced PQFP - Operating Temperature from -40C to 85C VSC8223 - Rates: OC-12/3, (STM-4/1) - Power Dissipation: 400 mW - Supply Voltage: 2.5 V - 7x7mm, 48-pin Thermally Enhanced PQFP - Operating Temperature from -40C to 85C
BENEFITS: Allows OEM Designers to Standardize Their Front End Design and Tune Their System to Meet the Demands of SONET/SDH, FEC, Fibre Channel and Gigabit Ethernet Applications without having to Re-design or use an Entirely New Physical Layer Every Time. Enables Building High Density Line Cards due to Minimal Power Dissipation Provides implementation flexibility through comprehensive feature set. Offers seamless Incorporation into a Complete System Design using other Vitesse Products such as PMD, Framers, Pointer Processors, Switch Fabrics, etc.
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PB-VSC8222,8223-002
VSC8222 VSC8223
Multi-rate SONET/SDH, Fibre Channel, and Gigabit Ethernet CDR
GENERAL DESCRIPTION: The VSC8222 and VSC8223 are high performance, multi-rate clock and data recovery ICs that support SONET/SDH systems operating at OC-48 (STM-16), OC-12 (STM-4), OC-3 (STM1), Fibre Channel (1.0625 Gbps and 2.125 Gbps), Gigabit Ethernet (1.25 Gbps and 2.5 Gbps), and FEC data rates. High speed input and output signals are terminated on-chip to maintain the highest degree of signal integrity possible. The devices output a differential bit clock and differential retimed data. BLOCK DIAGRAM:
LOS LOL BYPASS
Two selectable, externally supplied reference clock inputs support the Phase Lock Loop (PLL) operation and are used to maintain a lock condition when the high-speed data is missing at the input. The PLL has four different Loop bandwidth settings, allowing the designer to adjust the jitter transfer and tolerance attributes of the device. The PLL can be bypassed to accommodate rates not supported by the PLL. The VSC8222 and VSC8223 require a 2.5 V supply and are available in a 7x7x1.4mm 48-pin, thermally enhanced PQFP package.
MUX
DATA O/P
SDO SDO
SDI VTT SDI
I/P
CRU BLOCK
MUX
CLOCK O/P
SCO SCO
REFCLK1 REFCLK1 REFCLK0 REFCLK0
MUX
REFCLK FREQ. SELECT
LOCK TO REFERENCE BLOCK
RCLK_SEL RCLK_FSEL[1:0]
LREF_DIS
LREF
SCO_EN
A P P L I C AT I O N D I A G R A M :
Clock Recovery
VSC7971WE
VSC7971-W DATA
TIA
VSC8222
CLOCK
ASIC
VSC7939 VSC7940
LD
VSC8222
Data Retiming
For more information on Vitesse Products visit the Vitesse web site at www.vitesse.com or contact Vitesse Sales at (800) VITESSE or sales@vitesse.com
741 Calle Plano Camarillo, CA 93012, USA Tel: +1 805.388.3700 Fax: +1 805.987.5896 www.vitesse.com
(c)2003 Vitesse Semiconductor Corporation

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