Si3215
PROSLIC® PROGRAMMABLE CMOS SLIC/CODEC WITH
RINGING/BATTERY VOLTAGE GENERATION
Features
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Performs all BORSCHT functions
Software-programmable internal balanced
ringing up to 90 VPK
(5 REN up to 4 kft, 3 REN up to 8 kft)
Integrated battery supply with dynamic
voltage output
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Software-programmable signal
generation and audio processing:
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Phase-continuous FSK (caller ID)
generation
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Dual audio tone generators
Smooth and abrupt polarity reversal
µ-Law/A-Law and 16-bit linear PCM
audio
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On-chip dc-dc converter continuously
minimizes power in all operating modes
Entire solution can be powered from a
single 3.3 V or 5 V supply
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Extensive test and diagnostic features
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Multiple voice loopback test modes
Real time dc linefeed measurement
GR-909 line test capabilities
Ordering Information
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See page 111.
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SPI and PCM bus digital interfaces
Extensive programmable interrupts
100% software-configurable global
solution
Ideal for customer premise equipment
applications
Lead-free and RoHS-compliant packages
available
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3.3 to 35 V dc input range
Dynamic 0 to –94.5 V output
Low-cost inductor and high-efficiency
transformer versions supported
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Pin Assignments
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Software-programmable linefeed
parameters:
Si3215
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Ringing frequency, amplitude, cadence,
and waveshape
QFN
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2-wire ac impedance and hybrid
Constant current feed (20 to 41 mA)
Loop closure and ring trip thresholds and
filtering
38 37 36 35 34 33 32
Applications
DTX
FSYNC
RESET
SDCH
SDCL
VDDA1
IREF
CAPP
QGND
CAPM
STIPDC
SRINGDC
1
2
3
4
31 SDITHRU
30
DCDRV
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Voice-over-broadband systems:
DSL, cable, wireless
PBX/IP-PBX/key telephone systems
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Terminal adapters:
ISDN, Ethernet, USB
29
28
27
26
25
24
23
22
21
20
DCFF
TEST
GNDD
VDDD
ITIPN
ITIPP
5
6
7
Description
The ProSLIC is a low-voltage CMOS device that provides a complete analog
telephone interface ideal for customer premise equipment (CPE) applications.
The ProSLIC integrates subscriber line interface circuit (SLIC), codec, and battery
generation functionality into a single CMOS integrated circuit. The integrated
battery supply continuously adapts its output voltage to minimize power and
enables the entire solution to be powered from a single 3.3 V (Si3215M only) or
5 V supply. The ProSLIC controls the phone line through Silicon Labs’ Si3201
Linefeed Interface Chip or discrete component line feed. Si3215 features include
software-configurable 5 REN internal ringing up to 90 VPK, DTMF generation, and
a comprehensive set of telephony signaling capabilities including expanded
support of Japan and China country requirements. The ProSLIC is packaged in a
38-pin QFN and TSSOP, and the Si3201 is packaged in a thermally-enhanced 16-
pin SOIC.
8
9
VDDA2
10
11
12
IRINGP
IRINGN
IGMP
13 14 15 16 17 18 19
U.S. Patent #6,567,521
U.S. Patent #6,812,744
Other patents pending
Functional Block Diagram
INT
RESET
Si3215
Line
Status
CS
SCLK
SDO
Control
Interface
SDI
Gain/
A/D
D/A
TIP
DTX
Attenuation/
Filter
Line
Feed
Control
Prog.
Hybrid
Linefeed
Interface
Tone
Generators
PCM
Interface
DRX
RING
Gain/
Attenuation/
Filter
ZS
FSYNC
PCLK
Discrete
Components
DC-DC Converter Controller
PLL
Rev. 0.92 8/05
Copyright © 2005 by Silicon Laboratories
Si3215