技术特性

• Receiver:
  • On chip Clock and Data Recovery circuit for high input jitter tolerance
    
  • Meets E3/DS3/STS-1 Jitter Tolerance Requirements
    
  • Detects and Clears LOS as per G.775
    
  • Receiver Monitor mode handles up to 20 dB flat loss with 6 dB cable attenuation
    
  • On chip B3ZS/HDB3 encoder and decoder that can be either enabled or disabled
    
  • On-chip Clock Synthesizer generates the appropriate rate clock from a single frequency Crystal
    
  • Provides low jitter clock outputs for either E3, DS3 or STS-1 rates
    
  • Meets Jitter Tolerance Requirements, as specified in ITU-T G.823_1993 for E3 Applications
    
  • Meets Jitter Tolerance Requirements, as specified in Bellcore GR-499-CORE for DS3 Applications
  Transmitter:
  • Compliant with Bellcore GR-499, GR-253 and ANSI T1.102 Specification for transmit pulse
    
  • Tri-state Transmit output capability for redundancy applications
    
  • Transmitter can be turned on or off Jitter Attenuator:
    
  • On chip advanced crystal-less Jitter Attenuator
    
  • Jitter Attenuators can be selected in Receive or Transmit paths
    
  • Compliant with jitter transfer template outlined in ITU G.751, G.752, G.755, GR-253 and GR-499-CORE,1995 standards
    
  • Meets ETSI TBR 24 Jitter Transfer Requirements
    
  • 16 or 32 bits selectable FIFO size
    
  • Meets the Jitter and Wander specifications described in ANSI T1.105.03b
    
  • Jitter Attenuators can be disabled
  Control and Diagnostics:
  • 5 wire Serial Microprocessor Interface for control and configuration
    
  • Supports optional internal Transmit Driver Monitoring
    
  • PRBS Error Counter Register to accumulate errors
    
  • Hardware Mode for control and configuration
    
  • Supports Local, Remote and Digital Loop-backs
    
  • Single 3.3 V ± 5% power supply
    
  • 5 V Tolerant I/O
    
  • Available in 176 pin TQFP
    
  • -40°C to 85°C Industrial Temperature Range
    
  • Pb-Free, RoHS Compliant Versions Offere

技术指标

应用领域 APPLICATION

• E3/DS3 Access Equipment
  
• STS-1-SPE to DS# Mapper
  
• DSLAMs
  
• Digital Cross Connect Systems
  
• CSU/DSC Equipment
  
• Routers
  
• Fiber Optic Terminals

订购信息 Ordering Information

功能框图 Functional Block Diagram