VSC8222 VSC8223
F E A T 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
S P E C I F I C A T 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 -40
C 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 -40
C to 85C
.
B E N E F I T S :
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.
Multi-rate SONET/SDH, Fibre Channel, and Gigabit Ethernet CDR
A P P L I C A T 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
PHYSICAL LAYER PRODUCTS
PB-VSC8222,8223-002
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
2003 Vitesse Semiconductor Corporation
741 Calle Plano
Camarillo, CA 93012, USA
Tel: +1 805.388.3700
Fax: +1 805.987.5896
www.vitesse.com
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 (STM-
1), 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.
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.
G E N E R A L D E S C R I P T I O N :
Multi-rate SONET/SDH, Fibre Channel, and Gigabit Ethernet CDR
VSC8222 VSC8223
SCO
SCO
SDO
SDO
REFCLK0
REFCLK1
REFCLK0
REFCLK1
LREF
RCLK_SEL
SDI
SDI
LOS
LOL
VTT
BYPASS
RCLK_FSEL[1:0]
LREF_DIS
SCO_EN
MUX
CRU BLOCK
I/P
LOCK TO
REFERENCE
BLOCK
MUX
CLOCK
O/P
DATA
O/P
REFCLK
FREQ.
SELECT
MUX
B L O C K D I A G R A M :
A P P L I C A T I O N D I A G R A M :
VSC8222
ASIC
VSC7971WE
VSC7971-W
VSC7939
VSC7940
DATA
CLOCK
TIA
VSC8222
LD
Clock Recovery
Data Retiming
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