Zarlink?s cost-effective, software-programmable solution is the Le58QL02/021/031 QLSLAC? and the Le58QL061/063 QLSLAC line of DSP-based voice codec/filters. The four-channel QLSLAC devices handle the analog-to-digital and digital-to-analog conversion, filtering, compression and expansion functions required to interface a telephone's analog voice signals to the digital PCM highway or General Circuit Interface (GCI)

Features & Benefits

• Low-power, 3.3 V CMOS technology with 5-V tolerant digital inputs
• Software and coefficient compatible to the Le79Q02/ 021/031 QSLAC? device
• Performs the functions of four codec/filters
• Software programmable:
  • SLIC device input impedance
  • Transhybrid balance
  • Transmit and receive gains
  • Equalization (frequency response)
  • Digital I/O pins
  • Programmable debouncing on one input
  • Time slot assigner
  • Programmable clock slot and PCM transmit clock edge options
• Standard microprocessor interface
• A-law, µ-law, or linear coding
• Single or Dual PCM ports available
  • Up to 128 channels (PCLK at 8.192 MHz) per PCM port
  • Optional supervision on the PCM highway
• 1.536, 1.544, 2.048, 3.072, 3.088, 4.096, 6.144, 6.176, or 8.192 MHz master clock derived from MCLK or PCLK
• Built-in test modes with loopback, tone generation, and µP access to PCM data
• Mixed state (analog and digital) impedance scaling
• Performance guaranteed over a 12 dB gain range
• Real Time Data register with interrupt (open drain or TTL output)
• Supports multiplexed SLIC device outputs
• Broadcast state
• 256 kHz or 293 kHz chopper clock for Zarlink SLIC devices with switching regulator
• Maximum channel bandwidth for V.90 modems

 

Documentation

• Le58QL02x-datasheet-apr09.pdf

Design Manuals

Software Manuals

Application Notes

• QSLAC to QLSLAC Devices New Design Users Guide
• QSLAC to QLSLAC Design Conversion Users Guide
• Interpreting Amplitude Ripple Appnote

Product Previews

• VE580 Series Product Preview

Evaluation Boards

• Le51HE001V Evaluation Board E Users Guide

Reference Designs

• Le51HR0030 Reference Design Users Guide
• Le71HR0021 Reference Design Users Guide
• Le51HR0010 Line Module Users Guide

Software URLs

• LE71SK0002: VoicePath API-II Software
• LE71SDKWIN: WinSLAC
• LE71SDKVPS: VP-Script
• LE71SDKUVB: UVB Images
• LE71SDKPRO: Profile Wizard

Typical Applications

 

Codec function on telephone switch line cards

Product Packaging & Availability

Part Number	Package Type	Pin Count	Lead-Free Option	Shipping Option(s)	Lead Time(wks)	Status
LE58QL02FJC	PLCC	44	GREEN	Tube	6-8 weeks	Production
LE58QL02FJC	PLCC	44	GREEN	Tube	6-8 weeks	Production
LE58QL02FJCT	PLCC	44	GREEN	TR	6-8 weeks	Production
LE58QL02FJCT	PLCC	44	GREEN	TR	6-8 weeks	Production

Packaging Information

• Soldering Profiles
• Moisture Sensitivity
• Shelf Life
• Reliability Data

Technical Support

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