SI3200-KS datasheet, PDF - EEWORLD Datasheet

SI3200-KS: DescriptionDUAL PROGRAMMABLE CMOS SLIC WITH LINE MONITORING; File Size1MB，128 Pages; ManufacturerSILABS; Websitehttp://www.silabs.com

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DUAL PROGRAMMABLE CMOS SLIC WITH LINE MONITORING

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Si3232

UAL

ROGRAMMABLE

CMOS SLIC

WITH

INE

ONITORING

Features

Ideal for customer premise applications

Low standby power consumption:

<65 mW per channel

Internal balanced ringing to 65 V

rms

Software programmable parameters:

Ringing frequency, amplitude,

cadence, and waveshape

Two-wire ac impedance

DC loop feed (18–45 mA)

Loop closure and ring trip thresholds

Ground key detect threshold

Automatic switching of up to three

battery supplies

On-hook transmission

Loop or ground start operation with

smooth/abrupt polarity reversal

SPI bus digital interface with

programmable interrupts

3.3 V operation

GR-909 loop diagnostics and

loopback testing

12 kHz/16 kHz pulse metering

Lead-free/RoHS compatible

packages available

Ordering Information

See page 122.

U.S. Patent #6,567,521

Applications

Cable telephony

Wireless local loop

Voice over IP/voice over DSL

ISDN terminal adapters

U.S. Patent #6,812,744

Other patents pending

Description

The Si3232 is a low-voltage CMOS SLIC that offers a low-cost, fully software-

programmable, dual-channel, analog telephone interface for customer premise

(CPE) applications. Internal ringing generation eliminates centralized ringers and

ringing relays, and on-chip subscriber loop testing allows remote line card and

loop diagnostics with no external test equipment or relays. The Si3232 performs

all programmable SLIC functions in compliance with all relevant LSSGR, ITU, and

ETSI specifications; all high-voltage functions are performed by the Si3200

linefeed interface IC. The Si3232 operates from a single 3.3 V supply and

interfaces to a standard SPI bus digital interface for control. The Si3200 operates

from a 3.3 V supply as well as high-voltage battery supplies up to 100 V. The

Si3232 is available in a 64-pin thin quad flat package (TQFP), and the Si3200 is

available in a thermally-enhanced 16-pin small-outline (SOIC) package.

Functional Block Diagram

INT RESET

SCLK

SDI

SDO

VRXPa

VRXNa

VTXPa

VTXNa

VTXPb

VTXNb

VRXPb

VRXNb

VCM

PCLK

Si3232

Ring Source

Linefeed

& Monitor

SPI

Control

Interface

Si3200

Linefeed

Interface

TIP

RING

Ring Source

Linefeed

& Monitor

Si3200

Linefeed

Interface

TIP

RING

PLL

FSYNC

Preliminary Rev. 0.96 2/05

Si3232

This information applies to a product under development. Its characteristics and specifications are subject to change without notice.

Si3232

A B L E O F

O N T E N TS

Section

Page

1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2. Typical Application Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3. Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.1. Linefeed Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.2. Power Supply Transients on the Si3200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.3. DC Feed Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.4. Linefeed Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.5. Automatic Dual Battery Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.6. Ringing Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.7. Internal Unbalanced Ringing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

4.8. Ring Trip Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4.9. Ring Trip Timeout Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4.10. Ring Trip Debounce Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

4.11. Loop Closure Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

4.12. Relay Driver Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

4.13. Two-Wire Impedance Synthesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.14. Audio Path Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

4.15. System Clock Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

4.16. SPI Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

4.17. Si3232 RAM and Register Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

4.18. System Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

5. 8-Bit Control Register Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

6. 8-Bit Control Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

7. 16-Bit RAM Address Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

8. 16-Bit Control Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

9. Pin Descriptions: Si3232 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

10. Pin Descriptions: Si3200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120

11. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

12. Product Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

12.1. Part Designators (Partial List) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

13. Package Outline: 64-Pin eTQFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

14. Package Outline: 16-Pin ESOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Support Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125

Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128

Preliminary Rev. 0.96

SI3200-KS Related Products

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