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RC224ATL Datasheet(PDF) 1 Page - Synaptics Incorporated. |
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RC224ATL Datasheet(HTML) 1 Page - Synaptics Incorporated. |
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1 / 104 page  Data Sheet D224ATLVDSC March 25, 1999 RC224ATL/224ATLV EmbeddedModem Family The new Conexant RC224ATL utilizes a new integrated data pump/controller to allow the device to directly connect to host processors that are 3.3 V I/O capable. The codec used in the new part is the same as the codec used in the existing RC224ATL. The new device is form, fit, and function compatible with the existing device. This means there are no hardware and software differences between the existing and the new part, with one exception. The 3.3 V I/O capable part incorporates 3.3 V compatible digital I/O buffers, hence requiring 3.3 V digital supply instead of 5 V digital supply. In addition, unlike the current version of RC224ATL, the new part provides both data and fax capabilities. Data modes, controlled by an industry standard 2400 AT command set, can transmit and receive up to 2400 bps. Fax modes, controlled by a built-in EIA-578 Class 1 command interface, provide Group 3 transmit and receive functions. Functional Block Diagram V.24 EIA-232-D Interface Modem Data Pump Modem Controller Crystal Telephone Line Interface Modem LED Indictors Optional NVRAM Optional Speaker Distinguishing Features • Data modes – CCITT V.22 bis (2400 bps), V.22 (1200 bps) – Bell 212A (1200 bps) and 103 (300 bps) – Enhanced AT commands • Group 3 fax modes – V.29 (9600/7200 bps) transmit – V.27 ter (4800/2400 bps) transmit and receive – V.21 Channel 2 (300 bps) transmit and receive • EIA-578 Service Class 1 commands • V.42/MNP2-4 and V.42 bis/MNP 5 can be supported through host software without additional hardware • Data/fax discriminator and auto answering • Communications software compatible • Integrated call progress and dialing • No external microcomputer or memory required • Parallel or serial asynchronous DTE interface • A/A1 relay control • NVRAM interface allows storage of two user configurations and four 36-digit dial strings • Automatic adaptive/fixed compromise equalization • Programmable sleep mode and wake-up • Full-duplex data mode test capabilities: Analog loop, local digital loop, and remote digital loop • Half-duplex fax mode test capabilities • Automatic format/speed sensing • Low power consumption (typical) – Operating: 100 mW – Sleep—Idle: 25 mW – Sleep—Stop: 5 mW • Single +5 V power supply or Dual + 3.3 VDD and + 5 VAA power supplies • Package options: – 68-pin plastic leaded chip carrier (PLCC) – 100-pin plastic quad flat pack (PQFP) |
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Descripción similar - RC224ATL |
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