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
µm
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 -40°C to 85°C
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 85°C
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.
.
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 (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.
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
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