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CX88168-11

SmartSCM Modem

Conexant Systems 

SmartSCM Modem Data Sheet

CX88168

Single Chip Modem (SCM)

128-Pin TQFP

SmartDAA

Interface

Digital

Isolation

Barrier (DIB)

Components

Rectifier

and Filter

Components

DAA Hardware

CX20463 SmartDAA

Line Side Device (LSD)

32-Pin TQFP

Line

Side

DIB

Interface

(LSDI)

Codec

Telephone

Line

Interface

Microcontroller

Unit (MCU)

Modem Data

Pump (MDP)

Paralle Host

or Serial DTE

Interface

RAM

(32K x 8)

CX20437

Voice Codec (VC)

32-Pin TQFP

(Optional)

ROM

(256k x 8)

Serial EEPROM

2K (256 x 8) to

256K (32K x 8)

(Optional)

Telephone

Line Interface

Discrete

Components

Voice Relay,

HS Pickup

Detector

(Optional)

HS Hybrid

Components

(Optional)

(Mic/Speaker)

Interface

(Optional)

Digital Speaker

Circuit (Optional)

TELEPHONE

LINE

TIP

RING

TELEPHONE

HANDSET

TIP

RING

MIC

SPEAKER

Cellular

Interface

GSM Interface

(Parallel host

interface only)

SOUNDUCER

Optional RAM

Up to 1M (128K x 8)

Optional Flash ROM

Up to 4M (512K x 8)

[1M (128K x 8) required for

GSM with Base Modem Code

in Internal Flash ROM]

[4M (512K x 8) required for

GSM with Base Modem Code

in External Flash ROM]

Figure 1-2. SmartSCM Modem Major Interfaces

100491_F1-2_FID

100490C

Conexant

1-3

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