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Skyworks

Si32177 Datasheet Preview

Si32177 Datasheet

Single-Chip FXS

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Si3217xB/Si3291x
PROSLIC® SINGLE-CHIP FXS SOLUTION WITH FXO OPTION
Si3217x Features
Performs all BORSCHT functions
Tracking dc-dc controller
Ideal for short to medium loops
Patented low-power ringing
Global programmability
Wideband voice support
Simplified configuration and diagnosticsDTMF detection
Supported by ProSLIC API
Pulse metering
Low power standby operation
3.3 V operation
Pb-free/RoHS-compliant packaging
Si3291x Features
Greater than 5 kV isolation
Global programmability
Up to +6 dBm TX/RX level
Applications
Parallel handset detection
Type I and II caller ID support
Integrated ring detector
Programmable digital hybrid
Customer Premise Equipment (CPE)
VoIP DSL Gateways and Routers
Wireless Local Loop (WLL)
Description
Integrated Access Devices (IAD)
Analog Terminal Adapters (ATA)
Small Office/Home Office (SOHO)
PBX
The Si3217x is a family of pin-compatible single-channel ProSLIC products that
implement a complete foreign exchange station (FXS) telephony interface solution in
accordance with all relevant LSSGR, ITU, and ETSI specifications. Select parts in
the series also implement Skyworks Solutions' patented capacitive isolation
technology to enable seamless connection to Si3291x series foreign exchange office
(FXO) line-side devices.
The Si3217x ProSLIC ICs operate from a 3.3 V supply and interface to standard
PCM/SPI digital interfaces. The Si3217x integrated dc-dc controller automatically
generates the optimal battery voltages required for each line-state. Si3217x ICs are
available with voltage ratings of –110 V or –135 V to support a wide range of ringing
voltages. See the Ordering Guide for the voltage rating of each Si3217x version.
The Si3217x is available in a 5 x 7 mm 42-pin LGA package. The Si3291x is
available in a 16-pin SOIC package.
Functional Block Diagram
FSYNC
DRX
DTX
CSb
SDI
SDO
SCLK
INTb
RSTb
PCLK
PCM/
GCI
Interface
DTMF &
Tone Gen
Caller ID
SPI
Control
Interface
Ringing
Generator DSP
Line Diagnostics
CODEC
AADDCC
SLIC
Linefeed
Control
DDAACC
Linefeed
Monitor
Optional FXO
Isolation
Interface
PLL DDCC--DDCCCCoonnttrroollleerr
Si3217x
Control
C1A C1B
C2A C2B
Isolation
Interface
Hybrid and
dc
Termination
Ring Detect
Off-Hook
RX
DCT
VREG
IGND
CID
QB
QE
Si3291x
TIP
RING FXS
TIP
FXO
RING
Ordering Information
See page 38.
Pin Assignments
Si3217x
VDDHV 1 42 41 40 39 38 37 36 35 NC
SDI 2
34 GPIO1/STIPC
SDO 3
SCLK 4
EPAD2
33 GPIO2/SRINGC
32 SRINGDC
SDITHRU 5
31 SRINGAC
CSb 6
30 STIPAC
FSYNC 7
29 STIPDC
PCLK 8
28 VDDA
INTb 9
C2A/NC 10
EPAD1
27 QGND
26 IREF
C1A/NC 11
25 CAPM
DTX 12
24 CAPP
DRX 13
23 CAPLB
DCFF 14 15 16 17 18 19 20 21 22 SVBAT
Si3291x
QE 1
DCT 2
RX 3
IB 4
C1B 5
C2B 6
VREG 7
RNG1 8
16 DCT2
15 IGND
14 DCT3
13 QB
12 QE2
11 SC
10 VREG2
9 RNG2
Patents pending
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
Rev. 1.5 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 12, 2021




Skyworks

Si32177 Datasheet Preview

Si32177 Datasheet

Single-Chip FXS

No Preview Available !

TABLE OF CONTENTS
Si3217xB/Si3291x
Section
Page
1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
3. FXS Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
3.1. DC Feed Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.2. Linefeed Operating States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.3. Line Voltage and Current Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.4. Power Monitoring and Power Fault Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.5. Thermal Overload Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.6. Loop Closure Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.7. Ground Key Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.8. Ringing Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.9. Polarity Reversal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.10. Two-Wire Impedance Synthesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.11. Transhybrid Balance Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.12. Tone Generators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.13. DTMF Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.14. Pulse Metering (Si32170/1 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
3.15. DC-DC Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.16. Wideband Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.17. In-Circuit and Metallic Loop Testing (MLT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4. FXO Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
4.1. Isolation Barrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.2. Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.3. In-Circuit Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
4.4. Transmit/Receive Full-Scale Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
4.5. Line Voltage Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.6. Loop Current Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.7. Parallel Handset Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.8. DC Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.9. AC Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.10. Ring Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.11. Ring Validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
4.12. Ringer Impedance and Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.13. Pulse Dialing and Spark Quenching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.14. Receive Overload Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
4.15. On-Hook Line Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.16. Transhybrid Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5. System Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
5.1. SPI Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
5.2. PCM Interface and Companding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6. Pin Descriptions: Si3217x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2
Rev. 1.5 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 12, 2021


Part Number Si32177
Description Single-Chip FXS
Maker Skyworks
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Si32177 Datasheet PDF






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