LCR1210-R100F datasheet(30/59 Pages) SKYWORKS

30 / 59 page

Si32260/1

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

Rev. 1.4 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 7, 2021

4. Functional Description

Figure 20. Functional Block Diagram

The Si32260/1 dual ProSLIC devices provide all SLIC,

codec, DTMF detection, and signal generation functions

needed for two complete analog telephone interfaces.

They

perform

all

battery,

over-voltage,

ringing,

supervision, codec, hybrid, and test (BORSCHT)

functions, and also support extensive metallic loop

testing capabilities.

The Si32260/1 both provide a standard voice-band

(200 Hz–3.4 kHz) audio codec and, optionally, an audio

codec with both wideband (50 Hz–7 kHz) and standard

voiceband modes. The wideband mode provides an

expanded audio band with a 16 kHz sample rate for

enhanced audio quality while the standard voice-band

mode provides standard telephony audio bandwidth.

The Si32260/1 devices incorporate two programmable

dc-dc converter controllers that can operate in either

battery tracking mode or a shared rail mode. In both the

battery tracking and the shared rail modes the dc-dc

converter controllers react to line conditions to provide

the optimal battery voltage required for each line-state.

Multiple Si32260/1 devices can also operate from fixed

rail supplies controlled either by one of the integrated

dc-dc controllers or by an external dc-dc controller. The

Si32260/1 devices are available with voltage ratings of

–110 or –140 V to support a wide range of ringing

voltages. See Section "8. Ordering Guide‚" on page 45

for the voltage rating of each version.

Programmable on-hook voltage, programmable offhook

loop current, reverse battery operation, loop or ground

start

operation,

and

on-hook

transmission

are

supported. Loop current and voltage are continuously

monitored by an integrated monitoring ADC. The

Si32260/1 dual ProSLIC devices support balanced and

unbalanced 5 REN ringing with or without a

programmable dc offset, and can operate in low power

ringing and adaptive ringing modes. The available

offset, frequency, waveshape, and cadence options are

designed to ring the widest variety of terminal devices

and to reduce external controller requirements.

A complete audio transmit and receive path is

integrated, including ac impedance and hybrid gain.

These features are software-programmable, allowing a

single hardware design to meet global requirements.

SPI

Control

Interface

PCM/

GCI

Interface

DSP

DTMF &

Tone Gen

Caller ID

Ringing

Generator

ADC

DAC

CODEC

SLIC

Linefeed

Control

Linefeed

Monitor

DC-DC Controller

Line Diagnostics

PLL

PCLK

FSYNC

DRX

DTX

SDI

SDO

SCLK

INT

RST

SPI

Control

Interface

PCM/

GCI

Interface

DSP

DTMF &

Tone Gen

Caller ID

Ringing

Generator

ADC

DAC

CODEC

DC-DC Controllers

Line Diagnostics

PLL

PCLK

FSYNC

DRX

DTX

SDI

SDO

SCLK

INT

RST

Si32260/1

DAC

RING

TIP

Channel A

CODEC

SLIC

DAC

RING

TIP

Channel B

CODEC

SLIC

ADC

Linefeed

Control

Linefeed

Monitor

Linefeed

Control

Linefeed

Monitor

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