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R6781-11 数据手册 ( 数据表 )

零件编号产品描述 (功能)生产厂家
R6781-11 Embedded Modem Family Conexant
Conexant Systems Conexant
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RC224ATL image

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.

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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