Document
Si3226/7 Si3208/9
D U A L P R O S L I C ® W I T H DC-DC C O N T R O L L E R
Features
Performs all BORSCHT functions Ideal for short- or long-loop applications Internal balanced or unbalanced ringing Low power consumption Software-programmable parameters: Ringing frequency, amplitude, cadence, and waveshape Two-wire ac impedance Transhybrid balance DC current loop feed (10–45 mA) Loop closure and ring trip thresholds Ground key detect threshold Integrated dc-dc controller Wideband CODEC (Si3227) Low-power sleep mode On-hook transmission Loop or ground start operation Smooth polarity reversal DTMF generator/decoder A-Law/µ-Law companding, linear PCM PCM and SPI bus digital interfaces with programmable interrupts GCI/IOM-2 mode support 3.3 V operation GR-909 loop diagnostics Audio diagnostics with loopback Pb-free/RoHS-compliant packaging
Applications
Customer Premises Equipment (CPE) Optical Network Terminals (ONT) Private Branch Exchange (PBX) Cable EMTAs, ATAs, VoIP Gateways
Ordering Information See page 33. Patents pending
Description
The Dual ProSLIC® is a family of low-voltage CMOS devices that integrate both SLIC and CODEC functionality into a single IC. In combination with a linefeed IC (LFIC), they provide a complete two-channel analog telephone interface in accordance with all relevant LSSGR, ITU, and ETSI specifications. The Dual ProSLIC devices (Si3226/7) operate from a single 3.3 V supply and interface to standard PCM/SPI or GCI bus digital interfaces. The LFICs (Si3208/9) perform all high-voltage functions and operate from a 3.3 V supply as well as high-voltage battery supplies. The Si3208 is rated for –110 V, and the Si3209 is rated for – 135 V. The Dual ProSLIC devices are available in a 64-pin thin quad flat package (TQFP), and the LFICs are available in a 40-pin, quad flat no-lead package (QFN).
Functional Block Diagram
Si3226 Si3226/7
DTMF & Tone Gen Caller ID SPI Control Interface Ringing Generator Programmable Programmable AC ACImpedance Impedance and Hybrid
FSYNC DRX DTX CS SDI SDO SCLK INT RST
Si3206 Si3208/9
CODEC ADC DAC CODEC ADC DAC SLIC Linefeed
Linefeed Control Linefeed Monitor
PCM/ GCI Interface
TIP Channel 1 RING
DSP
SLIC Linefeed
Linefeed Control Linefeed Monitor
Line Diagnostics PLL DC-DC DC-DCControllers Controller
VBAT VDC DC-DC BOM
TIP Channel 2 RING
PCLK
Preliminary Rev. 0.33 6/07
Copyright © 2007 by Silicon Laboratories
Si3226/7 Si3208/9
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
Free Datasheet http://www.datasheet4u.com/
Si3226/7 Si3208/9
2
Preliminary Rev. 0.33
Free Datasheet http://www.datasheet4u.com/
Si3226/7 Si3208/9 TA B L E O F C O N T E N TS
Section Page
1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2. Typical Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3. Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.1. DC Feed Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.2. Linefeed Operating States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.3. Line Voltage and Current Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.4. Power Monitoring and Power Fault Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.5. Thermal Overload Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.6. Power Dissipation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 4.7. Loop Closure Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.8. Ground Key Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.9. Ringing Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.10. Polarity Reversal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.11. Two-Wire Impedance Synthesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.12. Transhybrid Balance Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.13. Tone Generators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.14. DTMF Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.15. .