SI3215 Datasheet, PDF (1/118 Pages) Silicon Laboratories – PROSLIC® PROGRAMMABLE CMOS SLIC/CODEC WITH RINGING/BATTERY VOLTAGE GENERATION

Si3215
PROSLIC^® PROGRAMMABLE CMOS SLIC/CODEC WITH
RINGING/BATTERY VOLTAGE GENERATION
Features
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
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
3.3 to 35 V dc input range
Dynamic 0 to –94.5 V output
Low-cost inductor and high-efficiency
transformer versions supported
Software-programmable linefeed
parameters:
Ringing frequency, amplitude, cadence,
and waveshape
2-wire ac impedance and hybrid
Constant current feed (20 to 41 mA)
Loop closure and ring trip thresholds and
filtering
Applications
Software-programmable signal
generation and audio processing:
Phase-continuous FSK (caller ID)
generation
Dual audio tone generators
Smooth and abrupt polarity reversal
µ-Law/A-Law and 16-bit linear PCM
audio
Extensive test and diagnostic features
Multiple voice loopback test modes
Real time dc linefeed measurement
GR-909 line test capabilities
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
Voice-over-broadband systems:
DSL, cable, wireless
PBX/IP-PBX/key telephone systems
Description
Terminal adapters:
ISDN, Ethernet, USB
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 V_PK, 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.
Functional Block Diagram
INT RESET
CS
SCLK
SDO
SDI
DTX
Control
Interface
DRX
PCM
Interface
FSYNC
PCLK
PLL
Si3215
Line
Status
Gain/
Attenuation/
Filter
Tone
Generators
Gain/
Attenuation/
Filter
A/D
Prog.
Hybrid
D/A
Line
Feed
Control
ZS
DC-DC Converter Controller
TIP
Linefeed
Interface
RING
Discrete
Components
Ordering Information
See page 111.
Pin Assignments
Si3215
QFN
DTX 1 ^{38 37 36 35 34 33 32} 31
FSYNC 2
30
RESET 3
29
SDCH 4
28
SDCL 5
27
V_DDA1 6
26
IREF 7
25
CAPP 8
24
QGND 9
23
CAPM 10
22
STIPDC 11
21
SRINGDC 12 13 14 15 16 17 18 19 20
SDITHRU
DCDRV
DCFF
TEST
GNDD
VDDD
ITIPN
ITIPP
V_DDA2
IRINGP
IRINGN
IGMP
U.S. Patent #6,567,521
U.S. Patent #6,812,744
Other patents pending
Rev. 0.92 8/05
Copyright © 2005 by Silicon Laboratories
Si3215