XRT91L30

STS-12/STM-4 OR STS-3/STM-1 SONET/SDH Transceiver
Data Sheets OBS (Obsolete)

Overview

Line Interface OC-12/OC-3
Protocols SONET/SDH
Trans Interface 8-Bit TTL
Pwr Sup 3.3V
Package PQFP-64
Show more

The XRT91L30 is a fully integrated SONET/SDH transceiver for SONET/SDH 622.08 Mbps STS-12/STM-4 or 155.52 Mbps STS-3/STM-1 applications. The transceiver includes an on-chip Clock Multiplier Unit (CMU), which uses a high frequency Phase-Locked Loop (PLL) to generate the high-speed transmit serial clock from a slower external clock reference. It also provides Clock and Data Recovery (CDR) function by synchronizing its on-chip Voltage Controlled Oscillator (VCO) to the incoming serial data stream. The internal CDR unit can be disabled and bypassed in lieu of an externally recovered received clock from the optical module. Either the internally recovered clock or the externally recovered clock can be used for loop timing applications. The chip provides serial-to-parallel and parallel-to-serial converters using an 8-bit wide LVTTL system interface in both receive and transmit directions.

The transmit section includes an 8x9 Elastic Buffer (FIFO) to absorb any phase differences between the transmitter clock input and the internally generated transmitter reference clock. In the event of an overflow, the FIFO can automatically recover from an overflow condition. The device can monitor Loss of Signal (LOS) condition and automatically mute received data upon LOS. An on-chip SONET/SDH frame byte and boundary detector and frame pulse generator offers the ability recover SONET/SDH framing and to byte align the receive serial data stream into the 8-bit parallel bus.

  • Not Recommended for New Designs. Refer to XRT91L31 for new designs.
  • Targeted for SONET STS-12/STS-3 and SDH STM-4/STM-1 Applications
  • Selectable full duplex operation between STS-12/STM-4 standard rate of 622.08 Mbps or STS-3/STM-1 155.52 Mbps
  • Single-chip fully integrated solution containing parallel-to-serial converter, clock multiplier unit (CMU), serial-to-parallel converter, clock data recovery (CDR) functions, and a SONET/SDH frame and byte boundary detection circuit
  • Ability to disable and bypass onchip CDR for external based received reference clock recovery thru Differential LVPECL input pins XRXCLKIP/N
  • 8-bit LVTTL parallel data bus paths running at 77.76 Mbps in STS-12/STM-4 or 19.44 Mbps in STS-3/STM-1 mode of operation
  • Uses Differential LVPECL or Single-Ended LVTTL CMU reference clock frequencies of either 19.44 MHz or 77.76 MHz for both STS-12/STM-1 or STS-3/STM-1 operations
  • Optional use of 77.76 MHz Single-Ended LVTTL input for independent CDR reference clock operation
  • Able to Detect and Recover SONET/SDH frame boundary and byte align received data on the parallel bus
  • Diagnostics features include LOS monitoring and automatic received data mute upon LOS
  • Provides Local, Remote and Split Loop-Back modes as well as Loop Timing mode
  • Optional access to internal FIFO has the advantage of permitting the upstream device time domain to be decoupled from the transceiver transmit timing and re-configure the transmit parallel bus clock output to a clock input and accept timing signal from the upstream device
  • Meets Telcordia, ANSI, Bellcore TR-NWT-000253 and GR-253-CORE, and ITU-T jitter requirements
  • Operates at 3.3V with 3.3V I/O
  • Less than 660mW Typical Power Dissipation
  • Package: 10 x 10 x 2.0 mm 64-pin QFP
  • Pb-Free, RoHS Compliant Versions Offered

  • SONET/SDH-based Transmission Systems
  • Add/Drop Multiplexers
  • Cross Connect Equipment
  • ATM and Multi-Service Switches, Routers and Switch/Routers
  • DSLAMS
  • SONET/SDH Test Equipment
  • DWDM Termination Equipment

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets XRT91L30 STS-12/STM-4 or STS-3/STM-1 SONET/SDH Transceiver 1.0.2 June 2007 617.8 KB
User Guides & Manuals Evaluation Board User Manual 1.0.0 February 2006 1.4 MB
Schematics & Design Files Schematic 1.0.0 August 2005 52.2 KB
Simulation Models
Package Type Vcc Temp Mode Version File
QFP 3.3V Industrial 1
Register for a myMxL account or Login to myMxL to view all Technical Documentation & Design Tools.

Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement PDN
XRT91L30IQ MQFP64 10x10 OBS XRT91L30IQ-F
XRT91L30IQ-F MQFP64 10x10 -40 85 OBS XRT91L31IQ-F
Show obsolete parts
Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.

Packaging

Pkg Code Details Quantities Dimensions PDF
MQFP64 10x10
  • JEDEC Reference: MS-029
  • MSL Pb-Free: L3 @ 260°C
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 45ºC/W
  • Bulk Pack Style: Tray
  • Quantity per Bulk Pack: 96
  • Quantity per Reel: 1000
  • Quantity per Tube: n/a
  • Quantity per Tray: 96
  • Reel Size (Dia. x Width x Pitch): 330 x 24 x 24
  • Tape & Reel Unit Orientation: Quadrant 2
  • Dimensions: mm
  • Length: 10.00
  • Width: 10.00
  • Thickness: 2.50
  • Lead Pitch: 0.50

Notifications

Distribution Date Description File
03/06/2019 Product Discontinuation Notice
07/26/2016 Product discontinuation notification. Discontinued.
12/05/2013 Addition of an alternate qualified assembly site, ASE Chung-Li (Taiwan) for assembly using copper or gold wire bonding. Material change and alternate assembly site.

FAQs & Support

Search our list of FAQs for answers to common technical questions.
For material content, environmental, quality and reliability questions review the Quality tab or visit our Quality page.
For ordering information and general customer service visit our Contact Us page.

Submit a Technical Support Question As a New Question

Visit the product page for the part you are interested in.  The part's status is listed in the Parts & Purchasing section.  You can also view Product Lifecycle and Obsolescence Information including PDNs (Product Discontinuation Notifications).
 
To visit a product page, type the part into the search window on the top of the MaxLinear website.
 
In this example, we searched for XRA1201.  Visit the product page by clicking the part number or visit the orderable parts list by clicking "Orderable Parts". 
 
 
 

 

  

The Parts & Purchasing section of the product page shows the Status of all orderable part numbers for that product.  Click Show obsolete parts, to see all EOL or OBS products.

 
 
 

 

The -F suffix indicates ROHS / Green compliance:
https://www.exar.com/quality-assurance-and-reliability/lead-free-program