Si3217x and Si3291x
ProSLIC® Single-Chip FXS Solution with FXO Option
Description
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
Silicon Laboratories' 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. The Si3217x is available in a 5x7 mm 42-pin QFN
package. The Si3291x is available in a 16-pin SOIC
package.
-
-
-
-
-
-
-
-
Low power standby operation
Tracking dc-dc controller
Patented low-power ringing
Wideband voice support
DTMF detection
Pulse metering
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
-
Parallel handset detection
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Type I and II caller ID support
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Integrated ring detector
-
Programmable digital hybrid
Applications
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Customer Premise Equipment (CPE)
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VoIP DSL Gateways and Routers
-
Wireless Local Loop (WLL)
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Integrated Access Devices (IAD)
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Analog Terminal Adapters (ATA)
-
Small Office/Home Office (SOHO) PBX
Si3217x Features
-
Performs all BORSCHT functions
-
Ideal for short to medium loops
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Global programmability
-
Simplified configuration and diagnostics
-
Supported by ProSLIC API
Ordering Guide
FXS P/N
Si32176-B-FM
Si32176-B-GM
Si32177-B-FM
Si32177-B-GM
Si32178-B-FM
Si32171-B-FM
Si32171-B-GM
Description
FXS, wideband capable
FXS, wideband capable
FXS, wideband capable
FXS, wideband capable
Max Vbat
–110 V
–110 V
–135 V
–135 V
–110 V
–110 V
–110 V
Temperature
0 to 70 °C
–40 to 85 °C
0 to 70 °C
–40 to 85 °C
0 to 70 °C
0 to 70 °C
–-40 to 85 °C
FXS, DTMF detection, wideband capable with FXO support
FXS, DTMF detection, pulse metering
FXS, DTMF detection, pulse metering
FXO P/N
Si32911-A-FS
Si32919-A-FS
Region
FCC/CTR21
Global
PCM/
GCI
Interface
Ringer Thresholds
1
3
CODEC
ADC
ADC
DAC
DAC
SLIC
Linefeed
Control
Linefeed
Monitor
On-hook Speeds
2
3
RoHS Compliant
Yes
Yes
Temperature
0 to 70 °C
0 to 70
C
FSYNC
DRX
DTX
CS
SDI
SDO
SCLK
INT
RST
Linefeed
DTMF &
Tone Gen
Caller ID
Programmable
Programmable
AC Impedance
AC Impedance
and Hybrid
TIP
RING
FXS
SPI
Control
Interface
Ringing
Generator
DSP
Optional FXO
Isolation
Interface
C1A
C1B
Isolation
Interface
Line Diagnostics
PLL
DC-DC Controller
DC-DC Controller
C2A
PCLK
Control
C2B
Ring Detect
Off-Hook
CID
QB
QE
RING
Si3217x
Si3291x
ProSLIC
Copyright © 2009 by Silicon Laboratories
BOM
Hybrid and
dc
Termination
RX
DCT
VREG
IGND
TIP
FXO
4.14.09
Si3217x and Si3291x
ProSLIC® Single-Chip FXS Solution with FXO Option
Selected Electrical Specifications
Parameter
Ambient Temperature
Supply Voltage, Si3217x
Battery Voltage, Si3217x
Maximum Loop Resistance
(loop + load)
DC Differential Output
Resistance
Idle Channel Noise
PSRR from V
DD
Longitudinal to Metallic/PCM
Balance (forward or reverse)
Metallic/PCM to Longitudinal Balance
Longitudinal Impedance
Longitudinal Current per Pin
DC Feed Current
2-Wire Return Loss
Transhybrid Balance
Thermal Resistance (QFN-42)
Thermal Resistance (SOIC-16)
Continuous Power Dissipation (QFN-42)
Continuous Power Dissipation (SOIC-16)
θ
JA
θ
JA
P
D
P
D
T
A
= 85 °C
T
A
= 85 °C
See Table 5,
Si3217x
Data Sheet
Symbol
T
A
V
DD
V
BAT
R
LOOP
R
DO
I
LOOP
=18 mA, V
BAT
= –48 V
I
LOOP
< I
LIM
C-Message weighted
RX and TX, dc to 3.4 kHz
200 Hz to 1 kHz
1 kHz to 3.4 kHz
200 Hz to 3.4 kHz
200 Hz to 3.4 kHz at
TIP or RING
Active off-hook
200 Hz to 3.4 kHz
V
TR
= 0 V
200 Hz to 3.4 kHz
300 Hz to 3.4 kHz
Test Condition
F-Grade
G-Grade
Min
0
–40
3.13
–15
—
160
—
—
58
53
40
—
—
—
26
26
—
—
—
—
Typical
25
25
3.3
—
—
—
8
55
60
58
—
50
25
—
30
30
32
85
1.3
0.47
Max
70
85
3.47
–136/–110
2000
640
12
—
—
—
—
—
—
45
—
—
—
—
—
—
Unit
°C
°C
V
V
dBrnC
dB
dB
dB
dB
mA
mA
dB
dB
°C/W
°C/W
W
W
Package Information
42-Pin QFN
M in
A
b
D
D2
e
E
E2
E3
E4
L
L1
5.35
1.65
3.15
0.35
0.05
3.35
0.60
0.20
MM
Typ
0.65
0.25
5.00 BS C
3.40
0.50 BS C
7.00 BS C
5.40
1.70
3.20
0.40
0.10
5.45
1.75
3.25
0.45
0.15
3.45
M ax
0.70
0.30
Min
A
—
0.10
1.25
0.31
0.17
9.90 BSC
6.00 BSC
3.90 BSC
1.27 BSC
0.40
0.25 BSC
0.25
0°
Max
1.75
0.25
—
0.51
0.25
16-Pin SOIC
A1
A2
b
c
D
E
E1
e
L
L2
h
ø
1.27
0.50
8°
ProSLIC
Copyright © 2009 by Silicon Laboratories
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
4.14.09
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