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DS3102GN+ 81-CSBGA
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Stratum 3 Timing Card IC with Synchronous Ethernet Support

Manufacturer :
Microsemi Corporation (Microchip )
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Product Categories :
Clock/Timing - Application Specific
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DS3102GN+ Product Details

The DS3102GN+ is a low-cost, feature-rich timing IC for telecom timing cards. With 8 input clocks, the device directly accepts both line timing from a large number of line cards and external timing from external DS1/E1 BITS transceivers. The DS3102GN+ continually monitors all input clocks and performs automatic hitless reference switching if the primary reference fails. The T0 DPLL complies with the Stratum 2, 3E, 3, 4E and 4 requirements of GR-1244, GR-253, G.812 Types I–IV, G.813 and G.8262. The highly programmable DS3102GN+ support numerous input and output frequencies including rates required for SONET/SDH, Synchronous Ethernet (1G, 10G, and 100Mbps), wireless base stations, and CMTS systems. PLL bandwidths from 0.5mHz to 400Hz are supported, and a wide variety of PLL characteristics and device features can be configured to meet the needs of many different applications. Two DS3102GN+ devices can be configured in a master/slave arrangement for timing card equipment protection.The DS3102GN+ register set is backward compatible with Semtech's ACS8522 timing card IC. The DS3102GN+ has a different package and pin arrangement than the ACS8522.Applications/UsesSONET/SDH Equipment Clocks (SECs)Synchronous Ethernet Equipment Clocks (EECs)Timing Card IC in WAN Equipment Including MSPPs, Ethernet Switches, Routers, DSLAMs, and Wireless Base StationsKey


  • Synchronization for Stratum 2, 3E, 3, 4E and 4 plus SMC, SEC and EEC
    • Meets Requirements of GR-1244 Stratum 2–4, GR-253, G.812 Types I–IV, G.813, and G.8262
    • Stratum 2, 3E or 3 Holdover Accuracy with Suitable External Oscillator
    • Programmable Bandwidth: 0.5mHz to 400Hz
    • Hitless Reference Switching on Loss of Input
    • Automatic or Manual Phase Build-Out
    • Frequency Conversion Among SONET/SDH, PDH, Ethernet, Wireless, and CMTS Rates
  • 8 Input Clocks
    • Four CMOS/TTL Inputs (≤ 125MHz)
    • Four LVDS/LVPECL/CMOS/TTL Inputs (≤ 156.25MHz)
    • Three Optional Frame-Sync Inputs (CMOS/TTL)
    • Continuous Input Clock Quality Monitoring
    • Numerous Input Clock Frequencies Supported:
      • SONET/SDH: 6.48, N x 19.44, N x 51.84MHz
      • Ethernet xMII: 2.5, 25, 125, 156.25MHz
      • PDH: N x DS1, N x E1, N x DS2, DS3, E3
      • Frame Sync: 2kHz, 4kHz, 8kHz
      • Custom: Any Multiple of 2kHz Up to 131.072MHz, Any Multiple of 8kHz Up to 155.52MHz
  • 7 Output Clocks
    • Three CMOS/TTL Outputs (≤ 125MHz)
    • Two LVDS/LVPECL Outputs (≤ 312.50MHz)
    • Two Dual CMOS/TTL and LVDS/LVPECL Outputs
    • Five CMOS Outputs Have Additional Output Pins That Can Be Powered at 2.5V or 3.3V
    • Numerous Output Clock Frequencies Supported:
      • SONET/SDH: 6.48, N x 19.44, N x 51.84MHz
      • Ethernet xMII: 2.5, 25, 125, 156.25, 312.5MHz
      • PDH: N x DS1, N x E1, N x DS2, DS3, E3
      • Other: 10, 10.24, 13, 30.72MHz
      • Frame Sync: 2kHz, 8kHz
      • Custom Clock Rates: Any Multiple of 2kHz Up to 77.76MHz, Any Multiple of 8kHz Up to 311.04MHz, Any Multiple of 10kHz Up to 388.79MHz
  • General
    • Internal Compensation for Master Clock Oscillator
    • SPI™ Processor Interface
    • 1.8V Operation with 3.3V I/O (5V Tolerant)
    • Industrial Temperature Range


  • SONET/SDH Equipment Clocks (SECs)
  • Synchronous Ethernet Equipment Clocks (EECs)
  • Timing Card IC in WAN Equipment Including MSPPs, Ethernet Switches, Routers, DSLAMs, and Wireless Base Stations

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Microsemi Corporation is a semiconductor manufacturer specializing in system engineering integrated circuits and high reliability discrete devices to support its stable growth and profitability. As a...
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