Si3217x-C
ProSLIC® Single-Chip FXS Solutions
Description
-
The Si3217x devices are 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. The Si3217x ProSLIC ICs
are available in a 5x7 mm 42-pin QFN package and operate from
a 3.3 V supply and support 3.3 V and 1.8 V I/O.
The Si32170/1/6/7 devices use a standard PCM/SPI digital
interface to connect to SoCs, while the Si32172/3/5 devices use
Silicon Labs' proprietary three-wire digital Integrated Serial
Interface (ISI) to connect to SoCs with the ISI pre-integrated.
The Si3217x integrated dc-dc controller automatically generates
the optimal battery voltages required for each line state. The
Si3217x ICs are available with voltage ratings of –110 V or –140 V
to support a wide range of ringing voltages. See the Ordering
Guide for the voltage rating of each Si3217x version.
For more information, visit the Si3217x ProSLIC web page.
-
Features
- Complete FXS solution in 5x7 mm
- Choice of PCM/SPI Interfaces or 3-wire ISI bus that combines
-
Tracking dc-dc controller with direct connection to MOSFET
Wideband voice support (Si32172/3/6/7)
On-hook transmission
Loop or ground start operation
Smooth polarity reversal
A-Law/u-Law companding, linear PCM
Software-programmable parameters:
- Ringing frequency, amplitude, cadence, and waveshape
PCM, SPI, and interrupt data
Performs all BORSCHT functions
Ideal for short to medium loops
Global programmability
Internal balanced or unbalanced ringing
Patented low power ringing
Simplified configuration and diagnostics
Supported by ProSLIC API
Ultra low power consumption
Two-wire ac impedance
Transhybrid balance
DC current loop feed (10-45 mA)
Loop closure and ring trip thresholds
Ground key detect threshold
DTMF generation
DTMF detection (Si32170/1/5)
Pulse metering
3.3 V operation
Support for 1.8 V I/O
Maximum battery up to –140 V
Pb-free/RoHS-compliant packaging
Applications
-
Customer Premise Equipment (CPE)
VoIP DSL Gateways and Routers
Wireless Local Loop (WLL)
Integrated Access Devices (IAD)
Analog Terminal Adapters (ATA)
Small Office/Home Office PBX
Ordering Guide
Part #
Si32170-C-FM1
Si32170-C-GM1
Si32171-C-FM1
Si32171-C-GM1
SoC Interface
Max Vbat
PCM/SPI
DTMF Detection
Pulse Metering
–140 V
9
9
PCM/SPI
–110 V
9
9
ISI
–110 V
9
ISI
–140 V
9
ISI
–110 V
PCM/SPI
–110 V
9
PCM/SPI
–140 V
9
Si32172-C-FM1
Si32172-C-GM1
Si32173-C-FM1
Si32173-C-GM1
Si32175-C-FM1
Si32175-C-GM1
Si32176-C-FM1
Si32176-C-GM1
Si32177-C-FM1
Si32177-C-GM1
Wideband
Temperature
0 to 70 °C
–40 to 85 °C
0 to 70 °C
–40 to 85 °C
0 to 70 °C
–40 to 85 °C
0 to 70 °C
–40 to 85 °C
9
0 to 70 °C
9
–40 to 85 °C
0 to 70 °C
–40 to 85 °C
0 to 70 °C
–40 to 85 °C
SDO
SCLK
INT
RST
PCLK
DTMF &
Tone Gen
Caller ID
SPI
Control
Interface
Ringing
Generator
CODEC
SLIC
ADC
ADC
Linefeed
Control
DAC
DAC
Linefeed
Monitor
TIP
FXS
DTMF &
Tone Gen
MISO
MOSI
RING
Integrated
Serial
Interface
Interface
SPI
DSP
Line Diagnostics
PLL
DC-DC
DC-DC Controller
Controller
Si32170/1/6/7
ProSLIC
Caller ID
Ringing
Generator
CODEC
SLIC
ADC
ADC
Linefeed
Control
DAC
DAC
Linefeed
Monitor
Linefeed
CS
SDI
PCM/
GCI
Interface
Programmable
Programmable
AC
ACImpedance
Impedance
and Hybrid
DTX
Linefeed
FSYNC
DRX
Programmable
Programmable
AC
ACImpedance
Impedance
and Hybrid
Functional Block Diagrams
TIP
FXS
RING
DSP
Line Diagnostics
PSCLK
PLL
DC-DC
DC-DC Controller
Controller
Si32172/3/5
Copyright © 2013 by Silicon Laboratories
5.10.2013
Si3217x-C
ProSLIC® Single-Chip FXS Solutions
Selected Electrical Specifications
Parameter
Ambient Temperature
Symbol
Test Condition
Min
Typical
Max
TA
F-Grade
0
25
70
Unit
°C
G-Grade
–40
25
85
°C
Supply Voltage
VDD
3.13
3.3
3.47
V
Battery Voltage, Si32171/2/5/6
VBAT
–110
–95
–15
V
Battery Voltage, Si32171/3/7
Maximum Loop Resistance (loop + load)
DC Differential Output Resistance
–140
–130
–15
V
RDC,MAX = 430 :, ILOOP = 18 mA,
VBAT = –52 V, RPROT = 0 :,
—
—
2000
:
ILOOP < ILIM
160
—
640
:
C-Message weighted
—
8
12
dBrnC
VBAT
RLOOP
RDO
Idle Channel Noise
PSRR from VDD, VDDIO @ 3.3 V
Longitudinal to Metallic/PCM Balance (forward or reverse)
Metallic/PCM to Longitudinal Balance
Longitudinal Impedance
Longitudinal Current Capability
DC Feed Current
Psophometric weighted
—
–82
–78
dBmP
RX and TX, 200 Hz to 3.4 kHz
—
55
0
dB
200 Hz to 1 kHz
58
60
—
dB
1 kHz to 3.4 kHz
53
58
—
dB
dB
200 Hz to 3.4 kHz
40
–
—
200 Hz to 3.4 kHz at TIP or RING
—
50
—
:
Active off-hook 60 Hz
Reg 73 = 0x0B
—
25
—
mA
Differential
—
—
45
mA
Common Mode
—
—
30
mA
Differential + Common Mode
—
—
45
mA
dB
dB
2-Wire Return Loss
200 Hz to 3.4 kHz
26
30
—
Transhybrid Balance
300 Hz to 3.4 kHz
26
—
30
—
53
—
ĬJB
—
33
—
ĬJC
—
39
—
—
0.75
—
Thermal Resistance (QFN-42)
Continuous Power Dissipation (QFN-42)
Package Information
ĬJA
PD
TA = 85 °C
°C/W
W
42-Pin QFN/LGA Package Diagram Dimensions
Dimension
Min
Max
A
0.80
0.85
0.90
b
0.20
0.25
0.30
D
D2
ProSLIC
Nom
5.00 BSC
3.35
3.40
e
0.50 BSC
E
7.00 BSC
3.45
E2
5.35
5.40
5.45
E3
1.65
1.70
1.75
E4
3.15
3.20
3.25
L
0.35
0.40
0.45
L1
0.05
0.10
0.15
aaa
—
—
0.10
bbb
—
—
0.10
ccc
—
—
0.08
ddd
—
—
0.10
Copyright © 2012 by Silicon Laboratories
5.10.2013
Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc.
Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders.
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