CX20548 DATASHEET PDF

Buy CXZ/H20 with extended same day shipping times. View datasheets , stock and pricing, or find other Modem Modules. CXZ Specifications: Device Type: Modem ; Supply Voltage: V ; Data Rate: 2 kbps Details, datasheet, quote on part number: CXZ. Case/Package, LCC. Data Rate, Kbps. Mount, Surface Mount. Operating Supply Voltage, V. Compliance. RoHS: Compliant. Datasheets. Conexant.

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This output can be optionally connected to a low-cost on-board speaker, e. After mode entry, AT commands can be entered without aborting the connection. When enabled, caller ID information date, time, caller code, and name can be passed to the DTE in formatted or unformatted form. When connected in V. Leave open for normal operation. Speakerphone operation is entered during Voice Online Command mode after completing dialing or answering.

In Tone Mode, all three tone detectors are operational. Clock specifications are listed in Table Position these capacitors very close to the VREF pin. The part numbers datasheet this design are: All dimensions in datasheey. Outputs transmit signal and impedance matching signal; connect to base of transistor Q Voltages referenced to ground VSS.

Shaping includes both acoustic and line echo cancellation. When PCM upstream is disabled, data transmission supports sending data at line speeds up to V. C must be placed close to pins 2.

Parameters are constantly adjusted to maintain stability with automatic fallback from full-duplex to pseudo-duplex operation. AT commands control the codec bits-per-sample rate.

CXA Conexant Systems | WIN SOURCE

The modem can sense speeds of,, datasgeet,,, and bps and the following data formats: The country profiles may be altered or customized by modifying the country-dependent parameters. The -TTE command can be used to adjust the voltage thresholds for the telephony extension features. Receiver operational amplifier inverting input.

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Voice Mode includes four submodes: The modem can detect and qualify ring signals. Pin 37 is the paddle on the bottom of the package. This timer can be set to a value between 0 and seconds by using register S All tone and pattern detection functions required by the applicable ITU or Bell standards are supported.

Additional and modified country profiles are supported by internal SRAM. Low speed modulations such as BellA or V. Un-rectified voltage from telephone line used to detect ring. The modem can blind dial in the absence of a dial tone if enabled by the X0, X1, or X3 command. Provides external connection point for decoupling.

CX20548-11Z

Default parameters support U. Digitized voice data is decompressed and converted to analog form at the original compression quantization sample-per-bits rate then output to the TXA output. The modem can detect and qualify ring signals and process AT commands.

Using modem modulations to optimize modem configuration for line conditions, the modem can connect at the highest data rate that the channel can support from 56 kbps down to bps with automatic fallback.

DTR ON prepares the modem to be connected to the telephone line, and maintains the connection established by the DTE manual answering or internally automatic answering. This mode supports applications such as digital telephone answering machine, voice annotation, and recording from and playback to the telephone line. After dialing, modem operation is controlled by fax commands.

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Table lists the ordering information. CXx DC electrical characteristics are listed in Table Answer tone detection period.

USB V.92/V.34/V.32bis Controllered Modem With CX20548 SmartDAA®

Using this method, the software can detect an incoming call, place the data connection on hold, and switch back to a data connection. Digitized audio data is converted to analog form then output to the TXA output. Received analog mono audio samples are converted to digital form and formatted into 8-bit unsigned linear PCM format for reading by the host. Temperature Frequency Stability vs. The modem connects to host via a logical V. Additionally, new non-standard sequences have been developed to better support POS applications.

R and C must be placed very close to pin 6. The modem can be awakened by the host sending a single any character typically followed by an AT command or by the datashet receiving a qualified ring.

Conexant customers using or selling Conexant products for use in such applications do so at their own risk and agree to fully indemnify Conexant for any damages resulting from such improper use or sale. If carrier is lost for a time greater than specified by the S10 register, the modem disconnects. The low power mode entered depends on the setting of the —SLP command. All devices are lead-free Pb-free and RoHS-compliant.

The server must support Modem-on-Hold functionality. Single-ended analog data input from the microphone circuit. Calling tone is generated dagasheet accordance with T.