CX06833-43
Modem Chip Single 14.4Kbps 144Pin TQFP
Overview
The ConexantSMXXD Modem is a full-featured, controller-based modem that integrates modem controller MCU, modem data pump MDP, 256 KB ROM, 32 KB RAM, and analog line interface codec functions into a single package.
General Modem Features
• Data modem
− Quick connect, Modem-on-Hold, and PCM upstream functions V.92 models
− ITU-T V.92/V.90 V.92 models, V.34 V.92 and V.34 models, V.32bis, V.32, V.29, FastPOS V.29, V.22 bis, V.22, V.22 Fast Connect, V.23, V.21, Bell 212A, and Bell 103
− V.250 and V.251 commands
• Data compression and error correction
− V.44 data compression
− V.42 bis and MNP 5 data compression
− V.42 LAPM and MNP 2-4 error correction
• Fax modem send and receive rates up to 14.4 kbps
− V.17, V.29, V.27 ter, and V.21 channel 2
− EIA/TIA 578 Class 1 and T.31 Class 1.0
• V.80 synchronous access mode supports host-controlled communication protocols with H.324 interface support
• Interfaces to optional external ROM/flash ROM, RAM, and/or optional serial EEPROM
• Data/Fax/Voice call discrimination
• Hardware-based modem controller
• Hardware-based digital signal processor DSP
• Support for many country-specific DAA configurations
− On-hook and/or off-hook Caller ID detection for selected countries
− Call progress, blacklisting
− Internal ROM includes default values for 29 countries
− Additional and modified country profile can be stored in internal SRAM
• Caller waiting detection
• Caller ID detect
− On-hook Caller ID detection
− Off-hook Call Waiting Caller ID detection during data mode in V.92, V.90, V.34, V.32bis, and V.32
• Distinctive ring detect
• Modem customization available through patch code that can be stored in optional serial EEPROM or internal SRAM
• Telephony/TAM
− V.253 commands
− 2-bit and 4-bit Conexant ADPCM, 8-bit linear PCM, and 4-bit IMA coding
− 8 kHz sample rate
− Concurrent DTMF, ring, and Caller ID detection
• Full-duplex speakerphone FDSP mode using optional CX20442 Voice Codec S models
− Microphone and speaker interface
− Telephone handset or headset interface
− Acoustic and line echo cancellation
− Microphone gain and muting
− Speaker volume control and muting
• Built-in host/DTE interface
− Parallel 16550A UART-compatible interface up to 230.4 kbps
− Serial ITU-T V.24 EIA/TIA-232-Elogical interface up to 115.2 kbps
• Downloadable architecture
• Direct mode serial DTE interface
• Flow control and speed buffering
• Automatic format/speed sensing
• Serial async/sync data; parallel async data
• Thin packages support low profile designs 1.6 mm max. height
− CX06833 Modem device in 144-pin TQFP
− CX20442 VC in 32-pin TQFP
• +3.3V operation with +5V tolerant digital inputs
• Typical power use
− CX06833: 191 mW Normal Mode; 53 mW Sleep Mode
− CX20442: 5 mW Normal Mode
