™
Document ID# 127609 Date: Mar 14, 2008
Version: 1
Distribution: Protected Document
Le88276
Dual Channel Tracking Battery Wideband VoicePort™
VE880 Series
APPLICATIONS
Voice enabled Cable and DSL Modems
Residential VoIP Gateways and Routers
Media Terminal Adapters (MTA) Standalone & Embedded
Fiber to the Premise/Home/Building (FTTP/H/B), Fiber
in the Loop (FITL) Optical Network Terminals (ONT)
Wireless Local Loop (WLL), PBX, ISDN NT1/TA
FEATURES
Complete BORSCHT function for 2 channels in a single
VoicePort™ device
— Battery Feed, Over-voltage support, integrated Ringing,
line Supervision, Codec, Hybrid (2W/4W), Test
Integrated Power Management
— Integrated high voltage switching regulator controllers
– Wide input voltage range (VSW =+4.75V to +35 V)
– Switching power supply tracks line voltage
minimizing active & ringing state power dissipation
— Low power Idle and On-hook transmission states
Worldwide Programmability
— Two-wire AC impedance, Balance Impedance, Gain
— DC feed voltage and current limit
— Ringing frequency, voltage and current limit
— 12 kHz and 16 kHz Metering
— Programmable loop closure and ring trip thresholds
Ringing
— 5 REN
— Up to 140-Vpk internal balanced sinusoidal or
trapezoidal ringing with programmable DC offset
— Unbalanced ringing for PBX trunk compatibility
Powerful signal generator
— Universal Caller ID generation
— Up to 4 simultaneous tones
— Automatic cadencing feature
VoicePath™ API-II Software available to implement
FXS functions
— Supports device calibration
— Line configuration via VoicePath Profile Wizard
VeriVoice™ Test Suite Subscriber Loop Test
— Seamless integration with API-II software
— Utilizes integrated self test capabilities
— Line fault detection and reporting
Pin selectable PCM/MPI or GCI interface
G.711 µ-law, A-law, or 16 bit linear coding
Wideband 16 kHz sampling mode
Integrated 150 mW 3-V Relay Driver
— External catch diode required
Small footprint package - Exposed pad 80-pin LQFP
ORDERING INFORMATION
1. The green package meets RoHS Directive 2002/95/EC of the
European Council to minimize the environmental impact of
electrical equipment.
2. For delivery using a tape and reel packing system, add a “T” suffix
to the OPN (Ordering Part Number) when placing an order.
Device OPN Package Type Packing
2
Le88276DLC
80-pin eLQFP (Green)
1
Tray
DESCRIPTION
The Zarlink dual channel Le88276 Tracking Battery
VoicePort™ device implements a dual-channel telephone line
interface by providing all the necessary voice interface
functions from the high voltage subscriber line to the µP/DSP
digital interface. This device reduces system level cost, space,
and power. Designers benefit by having a simple, cost
effective, low-power and dense, interface design without
sacrificing features or functionality. The programmable, feature
rich VoicePort device provides a highly functional line interface
which meets the requirements of short and medium loop (up to
1500 Ohms total) applications. Features include: high voltage
switching regulator, self-test, line test capabilities, integrated
ringing (up to 140-Vpk), worldwide software programmability
with wideband capability, flexible signal generator with tone
cadencing, caller ID generation and all BORSCHT functions.
These VoicePort device features are crucial for designing cost-
effective, full-featured Voice over Broadband solutions.
VOICEPORT™ DEVICE BLOCK DIAGRAM
PCLK/DCL
I/O2
i
- I/O1
i
DRA/DD
DXA/DU
FS/FSC
DOUT
4
TIPD
1
TDC
1
TSCA
RST
CS/PG
DCLK/S0
DIN/S1
INT/S2
TAC
1
RINGD
1
RDC
1
RAC
1
RINGT
1
TIPT
1
IREFVREF
High
Voltage
Line Driver
GCI Interface
(GCI)
Microprocessor
Interface
(MPI)
PLL
Analog
Reference
PCM Interface
and Time Slot
Assigner
(PCM)
Signal
Generation
Input / Output
Voice
Signal
Processing
Supervision
Processing
Signaling
Control
LFC
1
RTV
1
RSN
1
IHL
1
SWCMPY
SWVSY
SWISY
SWOUTY
Switching
regulator
controllers
TIPD
2
TDC
2
TAC
2
RINGD
2
RDC
2
RAC
2
RINGT
2
TIPT
2
High
Voltage
Line Driver
Signal
Generation
Voice
Signal
Processing
Supervision
Processing
Signaling
Control
LFC
2
RTV
2
RSN
2
IHL
2
VBAT
2
SWCMPZ
SWVSZ
SWISZ
SWOUTZ
VBAT
1
