ARF7429A ADEUNIS, ARF7429A Datasheet - Page 16

• 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

Exiting command mode
command
Transceiver mode
In transceiver mode, two protocols are available:
The communication is always half-duplex. The radio transmission is processed
prior to the radio reception (when the transceiver is sending a radio frame, it
is not able to decode any incoming radio frame).
If no data are sent on the serial link, the modem is waiting for radio
reception. Each radio frame sent by another modem is received and the
validated data extracted from the radio frame are sent on the serial link.
When the last character has been sent on the serial link, it is possible to send
an answer at least 100 µs (minimum) after the end of this last character.
All the data received on the serial link are encapsulated in a radio frame.
The radio frame format depends on the used protocol.
When acting as transceiver, the radio frame transmission always starts under
the following conditions :
Detection of a silence on the serial link (greater than S217) after the
reception of the latest character.
Or when the number of received characters from the serial link is higher or
equal to the maximum radio frame size (S218).
Ref. 08-07-V6-lmn
TXD
RXD
1.
2.
RF link)
Transparent mode, without flow control.
Addressed mode, with flow control (see register S216)
(from
CMD
Minimum ≥ 100µs
(return back in transceiver mode): send the serial
ATO <cr>
REPLY
A
RF54
User Guide
p. 14
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