Si3218x Data Short: ProSLIC
®
Single-Chip
FXS Solution
The Si3218x devices are pin-compatible single-channel ProSLIC
®
products that imple-
ment a complete foreign exchange station (FXS) telephony interface solution in accord-
ance with all relevant global specifications. The Si3218x ProSLIC ICs operate from a 3.3
V supply and interface to standard PCM/SPI or 3-wire ISI digital interfaces with 3.3 V or
1.8 V I/O. The Si3218x integrated dc-dc controller automatically generates the optimal
battery voltages required for each linestate. Si3218x ICs are available with voltage rating
of –106 V. The Si3218x devices are available in a 5x6 mm 36-pin QFN package and a
6x6 mm 40-pin QFN Package.
KEY FEATURES
• Complete FXS solution in a single 5x6 mm
or 6x6 mm package
• Performs all BORSCHT functions
• Ideal for short to medium loops
• Global programmability
• Patented low-power ringing
• Simplified configuration and diagnostics
• Supported by ProSLIC API
• Audio diagnostics with loopback
• Integrated test load
• Ultra low power consumption
• Wideband voice support
• On-hook transmission
• Loop or ground start operation
• Smooth polarity reversal
• A-Law/µ-Law companding, linear PCM
• Flexible integrated tracking dc-dc controller
supporting patent-pending low-cost
capacitive boost configuration
Applications:
• VoIP Gateways and Routers
• xDSL IADs
• Optical Network Terminals/Units (ONT/U)
• Analog Terminal Adapters (ATA)
• Cable eMTA
• Wireless Fixed Terminals (WFT)
• Wireless Local Loop (WLL)
• WiMAX CPE
Programmable
AC Impedance
and Hybrid
ADC
ADC
DAC
DAC
Linefeed
Linefeed
Control
Control
Linefeed
Linefeed
Monitor
Monitor
Linefeed
DTMF and
DTMF&
Tone Gen
Tone Gen
3-wire ISI
or
PCM/SPI
Interface
Caller ID
Ringing
Ringing
Generator
CODEC
CODEC
SLIC
SLIC
TIP
• Software-programmable parameters:
• Ringing frequency, amplitude, cadence,
and waveshape
FXS
RING
• Two-wire ac impedance
• Transhybrid balance
• DC current loop feed (10–45 mA)
• Loop closure and ring trip thresholds
• Ground key detect threshold
• Pulse metering
• DTMF generation
• DTMF detection (Si32181/3/5)
• 3.3 V operation
• Support for 1.8 V I/O
• Maximum battery up to –106 V
• Pb-free/RoHS-compliant packaging
• Two digital interface options
• 3-wire Integrated Serial Interface (ISI) or
PCM/SPI interface
Host Interface
Generator
DSP
Line Diagnostics
Line Diagnostics
PCLK / PSCLK
PLL
DC-DC Controller
Si3218x
Functional Block Diagram
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Rev. 0.1
Si3218x Data Short: ProSLIC
®
Single-Chip FXS Solution
Table 1.1. Si3218x Ordering Guide
P/N
Si32180-A-FM
Si32180-A-GM
Si32181-A-FM
Description
Wideband FXS, selectable ISI/PCM inter-
face, daisy-chain mode, practical MLT
Wideband FXS, selectable ISI/PCM inter-
face, daisy-chain mode, practical MLT
Wideband FXS, selectable ISI/PCM inter-
face, daisy-chain mode, practical MLT,
DTMF detection
Wideband FXS, selectable ISI/PCM inter-
face, daisy-chain mode, practical MLT,
DTMF detection
Wideband FXS, ISI interface, parametric
MLT
Wideband FXS, ISI interface, parametric
MLT
Wideband FXS, ISI interface, parametric
MLT, DTMF detection
Wideband FXS, ISI interface, parametric
MLT, DTMF detection
Wideband FXS, PCM interface, parametric
MLT
Wideband FXS, PCM interface, parametric
MLT
Wideband FXS, PCM interface, parametric
MLT, DTMF detection
Wideband FXS, PCM interface, parametric
MLT, DTMF detection
Package Type
2
QFN40
QFN40
QFN40
Max V
BAT
–106 V
–106 V
–106 V
Temperature
0 to 70 °C
-40 to 85 °C
0 to 70 °C
Si32181-A-GM
QFN40
–106 V
-40 to 85 °C
Si32182-A-FM
Si32182-A-GM
Si32183-A-FM
Si32183-A-GM
Si32184-A-FM
Si32184-A-GM
Si32185-A-FM
Si32185-A-GM
QFN36
QFN36
QFN36
QFN36
QFN40
QFN40
QFN40
QFN40
–106 V
–106 V
–106 V
–106 V
–106 V
–106 V
–106 V
–106 V
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
Note:
1. Adding the suffix "R" to the part number (e.g. Si3218x-A-FMR) denotes tape and reel.
2. QFN - Quad-Flat No-leads.
Table 1.2. Ordering Guide—Si3218x Evaluation Kits
Part Number
Si32183ACB10SL0EVB
Si32185ACB10SL0EVB
Description
ISI Wideband FXS with DTMF detection low-cost capacitive boost dc-dc converter
EVB
PCM interface, wideband FXS with DTMF detection low-cost capacitive boost dc-dc
converter EVB
V
BAT
Max
–100 V
–100 V
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SI32185-A-FMR SI32185-A-GM
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