CX06833-43 View Datasheet(PDF) - Conexant Systems

Part Name

Description

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CX06833-43

SMXXD Modem

Conexant Systems 

1.4.4

1.5

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CX06833-3x/4x SMXXD Modem Data Sheet

Reference Designs

Data/fax/TAM/speakerphone reference designs for external modems are available to

minimize application design time, reduce development cost, and accelerate market entry.

These designs are:

• For CX06833: RD01-D460-1xx

A design package is available in electronic form. This package includes schematics, bill

of materials (BOM), vendor part list (VPL), board layout files in Gerber format, and

complete documentation.

Hardware Description

CX06833 Modem Device

The CX06833 Modem, packaged in a 144-pin TQFP, includes a Microcontroller (MCU),

a Modem Data Pump (MDP), 256 KB internal ROM, and 32 KB internal RAM interface

functions.

The CX06833 Modem connects to host via a parallel host (PARIF = high) or a logical

V.24 (EIA/TIA-232-E) serial DTE interface (PARIF = low).

The CX06833 Modem performs the command processing and host interface functions.

The crystal frequency is 28.224 MHz ± 50 ppm.

The CX06833 Modem optionally connects to an external OEM-supplied serial EEPROM

over a dedicated 2-line serial interface. The capacity of the EEPROM can be 256 bytes

up to 32 KB. The EEPROM can hold information such as firmware configuration

customization, and country code parameters.

The CX06833 Modem performs telephone line signal modulation/demodulation in a

hardware digital signal processor (DSP) which reduces computational load on the host

processor.

The CX06833 optionally connects to external OEM-supplied ROM/flash ROM and

RAM over a non-multiplexed 19-bit address bus and 8-bit data bus.

CX20442 Voice Codec

The optional CX20442 Voice Codec (VC), packaged in a 32-pin TQFP, supports

voice/full-duplex speakerphone (FDSP) operation with interfaces to a microphone and

speaker and to a telephone handset/headset.

102228A

Conexant

1-9

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