™
Le78D11
Integrated Voice Chip Sets
VE770 Series
APPLICATIONS
ORDERING INFORMATION
Ideal for Short/Medium Loops of ~2000 ft, 26 AWG, and
5 REN loads
A Zarlink VoSLIC™ device must be used with this part.
Device Package
LE78D110VC
LE78D110BVC
Voice over IP/DSL – Integrated Access Devices, Smart
Residential Gateways, Home Gateway/Router
Cable Telephony – NIU, Set-Top Box, Home Side Box,
Cable Modem, Cable PC
Fiber–Fiber in the Loop (FITL), Fiber to the Home
(FTTH)
■ Wireless Local Loop, Intelligent PBX, ISDN NT1/TA
44-pin TQFP
44-pin TQFP (Green package)*
*Green package meets RoHS Directive 2002/95/EC of the European
Council to minimize the environmental impact of electrical equipment.
DESCRIPTION
FEATURES
The Zarlink Le78D11 VoSLAC™ device has enhanced and
optimized features to directly address the requirements of
Voice over Broadband (VoB) applications. Their common goal
is to reduce system level cost, board space, and power through
higher levels of integration. In addition, this solution reduces
the total cost of ownership of the end product by promoting
higher quality of service through integrated line and self test
capabilities. The VE770 series chip set uses two devices to
provide a completely software configurable solution to perform
the BORSCHT functions for two lines, including provision of a
single line battery voltage. The resulting system is less
complex, smaller, and denser, yet cost-effective with minimal
external components.
Integrated Dual-Channel Chipset
— Switching regulator support
— 44-pin TQFP Package
— 3.3 V Operation
Subscriber Loop Test/Self-Test
— GR-909 compliant drop test capability in both
measurements and pass/fail
–
–
–
–
–
–
Hazardous Potential
Foreign Electromotive Force
Resistive Faults
Receive off-hook
Ringers Test
Loop length
Easy integration into the end application is enabled by the
VoicePath™ API Software. Written in ANSI “C,” the software
development kit reduces the complexity of adding voice into a
product and makes use of the more sophisticated chip set
functions, such as Caller ID. It includes a management tool that
works with the WinSLAC™ Coefficient Generator to easily
support multiple market applications.
— Real-time automatic line fault detection & reporting
–
–
Loop Supervision
AC/DC Faults
— Integrated self tests
–
–
Loopback tests
Checksum of programmed values
µ-law, A-law, ADPCM or linear coding
Industry Standard Interfaces
— PCM/SPI or GCI
World Wide programmability:
— Ringing waveform generation and control
— Two-wire AC impedance
BLOCK DIAGRAM
Le77D11 /
Le77D21
Le78D11
Dual VoSLAC
T/R
— Trans-hybrid balance with Adaptation
— Gain
Voice Signal
Processor
GCI Interface
(GCI)
— Programmable loop closure/ringtrip thresholds
— Metering Tone Generation
Tone Detection &
Signal Generation
— Call Progress Tones
DTMF Generation AND Detection
FSK/Caller ID Tone Generation -Type I, Type II, & world-
wide
Dual
Line Measurement
PCM Interface and
Time Slot Assigner
(TSA)
VoSLIC /
VoSLIC-
ABS
Modem/Fax Tone Detection
Low power dissipation
PLL Clock
Generator
RELATED LITERATURE
080696 Le77D11 VoSLIC™ Device Data Sheet
080716 Le77D11 /Le78D11 Chip Set User’s Guide
081081 Le71HE0011 Evaluation Board User’s Guide
080729 VoicePath™ API Software Product Brief
080727 WinSLAC™ Software Product Brief
Serial Peripheral
Interface
SLIC Interface
(SLI)
(MPI)
T/R
Document ID# 080697 Date:
Sep 19, 2007
2
Rev:
D
Version:
Distribution:
Public Document