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FX809 - FFSK Modem

General Description

An intelligent, half-duplex, FFSK/MSK modem which operates under “C-BUS” control.

In addition this modem provides software selectable checksum generation and error checking, in accordance with MPT1327.

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Datasheet Details

Part number FX809
Manufacturer CML
File Size 410.68 KB
Description FFSK Modem
Datasheet download datasheet FX809 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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FX809 FFSK Modem Recovered Clock CHECKSUM GEN/CHECK Rx IN FFSK RECEIVER XTAL/CLOCK XTAL CLOCK GENERATOR Recovered Clock BYTE COUNTER DATA REGISTER 1 DATA REGISTER 2 Rx SYNC Detect SYNC/SYNC DETECT Rx SYNC Detect Rx FREE FORMAT CS REPLY DATA SERIAL CLOCK COMMAND DATA C-BUS INTERFACE AND CONTROL LOGIC Interrupt Enable RX DATA BUFFER TX DATA BUFFER Rx Data Ready Tx Data Ready SYNC PROGRAM LOW – HIGH Tx Idle 8-Bit Parallel Bus ADDRESS DECODER Rx SYNC Detect Rx SYNC Detect CONTROL REGISTER STATUS REGISTER WAKE ADDRESS SELECT Fig 1. FX809 FFSK Modem VDD FFSK TRANSMITTER TX OUT VBIAS VBIAS AMP IN – + UNCOMMITTED AMPLIFIER AMP OUT V SS INTERRUPT GENERATOR IRQ Brief Description An intelligent, half-duplex, FFSK/MSK modem which operates under “C-BUS” control.