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FX919AD2 Datasheet(PDF) 1 Page - CML Microcircuits |
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FX919AD2 Datasheet(HTML) 1 Page - CML Microcircuits |
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1 / 44 page  CML Semiconductor Products 4-Level FSK Modem Data Pump FX919A © 1996 Consumer Microcircuits Limited D/919A/4 June 1996 1.0 Features Advance Information •• 4-Level FSK Modulation •• Flexible Operating Modes •• Half Duplex, 4800 to 19.2k bits/sec •• Host Bus Interface •• Full Packet Data Framing •• Low Power 3.3V to 5V Operation •• 24-Pin Small Form Package Option 1.1 Brief Description The FX919A is a CMOS integrated circuit that contains all of the baseband signal processing and Medium Access Control (MAC) protocol functions required for a high performance 4-level FSK Wireless Packet Data Modem. It interfaces with the modem host processor and the radio modulation/demodulation circuits to deliver reliable two-way transfer of the application data over the wireless link. The FX919A assembles application data received from the processor, adds forward error correction (FEC) and error detection (CRC) information and interleaves the result for burst-error protection. After adding symbol and frame sync codewords, it converts the packet into filtered 4-level analogue signals for modulating the radio transmitter. In receive mode, the FX919A performs the reverse function using the analogue signals from the receiver discriminator. After error correction and removal of the packet overhead, the recovered application data is supplied to the processor. Any residual uncorrected errors in the data will be flagged. A readout of the SNR value during receipt of a packet is also provided. The FX919A uses data block sizes and FEC/CRC suitable for applications which require the high-speed transfer of data over narrow-band wireless links. The device is programmable to operate at most standard bit- rates from a wide choice of Xtal/clock frequencies. |
Similar Part No. - FX919AD2 |
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Similar Description - FX919AD2 |
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