XRT83SL314 14-Channel T1/E1/J1 Line Interface Unit with JA & CDR

The 14-channel XRT83SL314 and XRT83L314 LIUs are targeted at solving the data stream conversion challenge between T1/E1 and DS3/E3. In a METRO environment, a conventional multiplexer must multiplex/demultiplex 28 T1, or 21 E1 channels into a single DS3/E3 signal. Using combinations of eight-channel or four-channel devices can accommodate the 28-channel requirement, but at the expense of not fully utilizing all channels (32 channels in a 4x 8-channel configuration), or wasting precious board space. Exar's 14-channel devices give OEMs maximum design flexibility, and with the addition of R3 Technology clearly distinguish the parts in the marketplace. The devices are targeted at Multi-Service Provisioning Platforms (MSPPs), media gateways, routers, and frame relay access devices.

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
频道数量 14
数据传输速率(s) T1/E1/J1
Clk Rec Yes
短途/长途 S
温度.范围 Ind.
OpPwr Sup/Max Cur 3.3V ±5%, TBD
封装 TBGA-304
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
器件型号 有害物质限制 最低温度 最高温度 状态 立刻购买 申请样片
XRT83SL314IB-F -40 85 Active
XRT83SL314IB -40 85 Active

 

应用技术支持与电子电路设计开发资源下载 版本信息 大小
XRT83SL314 数据资料DataSheet下载:pdf Rev.V2 2 页