MaxLinear XRT75R06DIB-F

The XRT75R06D is a six channel fully integrated Line Interface Unit (LIU) featuring EXAR’s R³ Technology (Reconfigurable, Relayless, Redundancy) for E3/DS3/STS-1 applications. The LIU incorporates 6 independent Receivers, Transmitters and Jitter Attenuators in a single 217 Lead BGA package. Each channel of the XRT75R06D can be independently configured to operate in E3 (34.368 MHz), DS3 (44.736 MHz) or STS-1 (51.84 MHz). Each transmitter can be turned off and tri-stated for redundancy support or for conserving power. The XRT75R06D’s differential receiver provides high noise interference margin and is able to receive data over 1000 feet of cable or with up to 12 dB of cable attenuation. The XRT75R06D incorporates an advanced crystalless jitter attenuator per channel that can be selected either in the transmit or receive path. The jitter attenuator performance meets the ETSI TBR-24 and Bellcore GR-499 specifications. Also, the jitter attenuators can be used for clock smoothing in SONET STS-1 to DS-3 de-mapping. The XRT75R06D provides a Parallel Microprocessor Interface for programming and control. The XRT75R06D supports analog, remote and digital loop-backs. The device also has a built-in Pseudo Random Binary Sequence (PRBS) generator and detector with the ability to insert and detect single bit error for diagnostic purposes.

• R³ Technology (Reconfigurable, Relayless, Redundancy)
• On chip Clock and Data Recovery circuit for high input jitter tolerance
• Meets E3/DS3/STS-1 Jitter Tolerance Requirement
• 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 provides the appropriate rate clock from a single 12.288 MHz Clock
• Provides low jitter output clock
• R³ Technology (Reconfigurable, Relayless, Redundancy)
• Compliant with Bellcore GR-499, GR-253 and ANSI T1.102 Specification for transmit pulse
• Tri-state Transmit output capability for redundancy applications
• Each Transmitter can be independently turned on or off
• Each channel supports Analog, Remote and Digital Loop-backs
• Single 3.3 V ±5% power supply
• 5 V Tolerant digital inputs
• Available in 217 pin BGA Package
• -40°C to 85°C Industrial Temperature Range
• Accepts either Single-Rail or Dual-Rail data from Terminal Equipment and generates a bipolar signal to the line
• Integrated Pulse Shaping Circuit
• Built-in B3ZS/HDB3 Encoder (which can be disabled)
• Accepts Transmit Clock with duty cycle of 30% - 70%
• Generates pulses that comply with the ITU-T G.703 pulse template for E3 applications
• Generates pulses that comply with the DSX-3 pulse template, as specified in Bellcore GR-499-CORE and ANSI T1.102_1993
• Generates pulses that comply with the STSX-1 pulse template, as specified in Bellcore GR-253-CORE
• Transmitter can be turned off in order to support redundancy designs
• Integrated Adaptive Receive Equalization (optional) for optimal Clock and Data Recovery
• Declares and Clears the LOS defect per ITU-T G.775 requirements for E3 and DS3 applications
• 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
• Declares Loss of Lock (LOL) Alarm
• Built-in B3ZS/HDB3 Decoder (which can be disabled)
• Recovered Data can be muted while the LOS Condition is declared
• Outputs either Single-Rail or Dual-Rail data to the Terminal Equipment
• 16 or 32 bits selectable FIFO size
• Parallel Microprocessor Interface for control and configuration
• Supports optional internal Transmit driver monitoring

• E3/DS3 Access Equipment
• DSLAMs
• Digital Cross Connect Systems
• CSU/DSU Equipment
• Routers
• Fiber Optic Terminals