™
Le9500
High-Voltage Ringing SLIC Device for VolP Applications
VE950 Series
ORDERING INFORMATION
APPLICATIONS
Interface to Broadcom:
Device
Le9500ABJC
Le9500BBJC
Le9500CBJC
Package Type1
Packing2
— BCM3367/3368 cable modem
— BCM3341/3351/3352 cable modem
— BCM6352 integrated multimedia adaptor
— BCM1101 residential gateway
28-Pin PLCC, -75V (Green)
28-Pin PLCC, -85V (Green)
28-Pin PLCC, -100V (Green)
Tube
28-Pin PLCC, -100V
operation / -145V ringing
(Green)
Cable modems
Le9500DBJC
Voice over Internet Protocol (VoIP)
Voice over DSL
Remote subscriber units
Broadband wireless
Short-loop access
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.
FEATURES
Differential ringing and codec interface
Single-ended application also supported
On-board ringing generation
— 15 to 70 Hz ring frequency supported
Three ringing options:
DESCRIPTION
The Zarlink Le9500 device, part of the VE950 series, is a
subscriber line interface circuit (SLIC) that is optimized for
short-loop, power-sensitive applications. This device provides
the complete set of line interface functionality (including power
ringing) needed to interface to a subscriber loop while
providing ultra low power dissipation. The Le9500 SLIC device
is capable of operating with a VCC supply of 3.3 V, and is
designed to minimize external components required at all
device interfaces. The differential ringing and receive inputs
make the device ideal for direct interface to Data Over Cable
Service Interface Specification (DOCSIS) compliant cable
modem gateways, to multimedia adaptors, and to residential
gateway products, such as the Broadcom® BCM3367/3368,
BCM3341/3351/3352, BCM6353, BCM1101 and equivalent
products.
— Sine wave input - sine wave output
— PWM input - sine wave output
— Square wave input - trapezoidal output
Flexible power supply options:
— VBAT2 for active talking
— VBAT1 for ringing, scan, and so on
— 3.3 V for VCC
Battery switch to minimize off-hook power
Eight operating states:
— Scan
— Forward and reverse battery active
— Forward and reverse battery on-hook transmission
— Ground start
— Ring
— Disconnect
BLOCK DIAGRAM
AGND
V
CC
BGND
V
BAT2
VBAT1
VPROG
V
REF
NSTAT
RTFLT DCOUT
Ultra-low on-hook power:
— 29 mW scan state
CURRENT
LIMIT
GAIN = 20
RING
TRIP
AND
POWER
1.5 V
— 38 mW active state
INRUSH
CONTROL
AAC
VITR
TXI
Loop start, ring trip, and ground start detection
— Fixed off hook threshold with hysteresis
— Fixed ground start threshold with hysteresis
— Fixed ring-trip threshold as a function of battery voltage
Software-controllable dual-current limit option
— 25 mA or 40mA via ground or open control input
UL1950 Compatible
LOOP
CLOSURE
BAND-GAP
REFERENCE
RECTIFIER
X1
+
–
FB2
CF2
AX
VTX
ITR
(ITR/306)
–
+
RFT
PT
AT
18
Ω
X1
CF1
FB1
— When not in ringing, |VTIP| and |VRING| are clamped to
be less than 56.5 V
TIP/RING
CURRENT
SENSE
+
–
RCVP
RCVN
+
–
RFR
Thermal shutdown protection with hysteresis
PR
AR
AC
GAIN = 4
18
Ω
28-pin PLCC package
HV7 Technology
PARALLEL
RINGING
GAIN = 65
DATA
INTERFACE
B0 B1 B2
RINGINP
RINGINN
Document ID# 081189 Date:
Sep 17, 2007
2
Rev:
G
Version:
Distribution:
Public Document