技术特性

• Fully integrated 14-Channel short haul transceivers for T1/J1 (1.544MHz) and E1 (2.048MHz) applications
  
• T1/E1/J1 short haul and clock rate are per port selectable through software without changing components
  
• Internal Impedance matching on both receive and transmit for 75Ω (E1), 100Ω (T1), 110Ω (J1), and 120Ω (E1) applications are per port selectable through software without changing components
  
• Power down on a per channel basis with independent receive and transmit selection
  
• Five pre-programmed transmit pulse settings for T1 short haul applications
  
• Arbitrary Pulse Generators for both T1 and E1 modes
  
• On-Chip transmit short-circuit protection and limiting protects line drivers from damage on a per channel basis
  
• Independent Crystal-Less digital jitter attenuators (JA) with 32-Bit or 64-Bit FIFO for the receive and transmit paths
  
• On-Chip frequency multiplier generates T1 or E1 master clocks from a variety of external clock sources (8, 16, 56, 64, 128, 256kHz and 1X, 2X, 4X, 8X T1 or E1)
  
• Driver failure monitor output (DMO) alerts of possible system or external component problems
  
• Transmit outputs and receive inputs may be "High" impedance for protection or redundancy applications on a per channel basis
  
• Support for automatic protection switching
  
• 1:1 and 1+1 protection without relays
  
• Receive monitor mode handles 0 to 29dB resistive attenuation (flat loss) along with 0 to 6dB cable loss for both T1 and E1
  
• Receiver line attenuation indication output in 1dB steps
  
• Loss of signal (RLOS) according to ITU-T G.775/ETS300233 (E1) and ANSI T1.403 (T1/J1)
  
• Programmable receive slicer threshold (45%, 50%,55%, or 68%) for improved receiver interference immunity
  
• Programmable data stream muting upon RLOS detection
  
• On-Chip HDB3/B8ZS encoder/decoder with an internal 16-bit LCV counter for each channel
  
• On-Chip digital clock recovery circuit for high input jitter tolerance
  
• QRSS pattern generator and detection for testing and monitoring
  
• Error and bipolar violation insertion and detection
  
• Transmit all ones (TAOS) and in-band network loop up and loop down code generation
  
• Automatic loop code detection for remote loopback activation
  
• Supports local analog, remote, digital, and dual loopback modes
  
• Low Power dissipation: 170mW per channel (50% density)
  
• 250mW per channel maximum power dissipation (100% density)
  
• Single 3.3V supply operation (3V to 5V I/O tolerant)
  
• 304-Pin TBGA package
  
• -40°C to +85°C Temperature Range
  
• Supports gapped clocks for mapper/multiplexer applications
  
• Pb-Free, RoHS Compliant Versions Offered

技术指标

应用领域 APPLICATION

• T1 Digital Cross Connects (DSX-1)
  
• ISDN Primary Rate Interface
  
• CSU/DSU E1/T1/J1 Interface
  
• T1/E1/J1 LAN/WAN Routers
  
• Public Switching Systems and PBX Interfaces
  
• T1/E1/J1 Multiplexer and Channel Banks
  
• Integrated Multi-Service Access Platforms (IMAPs)
  
• Integrated Access Devices (IADs)
  
• Inverse Multiplexing for ATM (IMA)
  
• Wireless Base Stations
  

订购信息 Ordering Information