
• 16:1 deserializer
• Integrated Variable Gain Amplifier with 
adjustable slice level for long-haul systems
• Frequency-agile clock and data recovery 
from NRZ data at 125 Mbps to 3.2 Gbps
• Exceeds SONET Bellcore and ITU-T 
specifications for jitter tolerance, transfer 
and generation
• Independent line and equipment loopbacks
• Loss of signal
• 64-pin (9mm x 9mm) BCC++ package
• 3.3V power supply
network access products
3 Gbps 1:16 Deserializer 
with CDR and VGA 
CX02551
The CX02551 is a receiver IC consisting of a Variable Gain 
Amplifier (VGA), limiting amplifier, CDR, and a 1:16 deserializer. 
The multirate CDR maximizes jitter tolerance, minimizes 
pattern-dependant jitter, and does not require an external 
frequency reference. By default, upon reset, the CX02551 
registers are set to operate at the SONET OC-48 specification. 
However, through the serial programming interface, the 
receiver can be customized to operate with data rates from 
155 Mbps to 3.2 Gbps.
Distinguishing Features