ARF7429A ADEUNIS, ARF7429A Datasheet - Page 17

• Manufacturer Part Number: ARF7429A
• Description: MODULE, ARF54, EURO
• Manufacturer: ADEUNIS
• Type: Modem Moduler

Specifications of ARF7429A

• Modulation Type: FM
• Data Rate Max: 57.6Kbps
• Frequency Range: 869.4MHz To 869.65MHz
• Sensitivity: -110dBm
• Supply Voltage Range: 3V To 3.6V
• Supply Current: 700mA
• Rohs Compliant: Yes

Transparent mode
In transparent mode, the modem acts as a wire serial link. It means that
alternately, the modem sends on the radio the data received from the serial
link and sends on the serial link the data received from the radio.
The radio frame format is :
Addressed mode
In transmission mode, data received on the serial link are sent on the radio
link with the following format :
Otherwise received data are silently discarded.
Transceiver state machine
When operating in transceiver mode the 'RF transmission' state machine is :
Idle state of the transceiver : by default the transceiver is waiting for
incoming data on the RS232 link and for incoming radio frame on the radio
link.
The RS232 link has a higher priority than the radio link (if a radio frame is
demodulated meanwhile some RS232 characters are detected on the serial
Ref. 08-07-V6-lmn
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<Preamble><synchro>DATA <postambule>.
Preamble, synchronisation and postambule are used for the radio
reception.
<Preamble><synchro><Address> DATA <postambule>.
Preamble, synchronisation and postambule are used for the radio
reception.
The Address field is set up with S256 value (LSB first).
In reception mode: The <Address> field of the radio frame is
checked with the reception address (S252)
If the radio frame address matches the transceiver reception
address (S252), DATA (and only DATA) are transmitted on the
serial link
A
RF54
User Guide
p. 15
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