ax5042-1 AXSEM, ax5042-1 Datasheet - Page 19

• Manufacturer Part Number: ax5042-1
• Description: Rf Transceiver
• Manufacturer: AXSEM

5.
The
The on-chip transceiver consists of a fully integrated RF front-end with modulator and
demodulator. Base band data processing is implemented in an advanced and flexible
communication controller that enables user friendly communication via the SPI interface or in
direct wire mode.
AX5042
-40
power and 17 - 23 mA for receiving.
The
SRD solutions such as ticketing or as transceiver for telemetric applications e.g. in sensors. As
primary application, the transceiver is intended for UHF radio equipment in accordance with
the European Telecommunication Standard Institute (ETSI) specification EN 300 220-1 and the
US Federal Communications Commission (FCC) standard CFR47, part 15. The use of
accordance to FCC Par 15.247, allows for improved range in the 915 MHz band. Additionally
AX5042
The
In wire mode the IC behaves as an extension of any wire. The internal communication
controller is disabled and the modem data is directly available on a dedicated pin (DATA).
The bit clock is also output on a dedicated pin (DCLK). In this mode the user can connect the
data pin to any port of a micro-controller or to a UART, but has to control coding, checksums,
pre and post ambles. The user can choose between synchronous and asynchronous wire
mode, asynchronous wire mode performs RS232 start bit recognition and re-synchronization
for transmit.
In frame mode data is sent and received via the SPI port in frames. Pre- and postambles as
well as checksums can be generated automatically. Interrupts control the data flow
between a micro-controller and the AX5042.
Both modes can be used both for transmit and receive. In both cases the
as a SPI slave interface. Configuration of the
AX5042
0.1 kbps to 600 kbps for ASK and PSK. To achieve optimum performance for specific data
rates and modulation schemes several register settings to configure the
necessary, they are outlined in the following, for details see the
Manual.
Spreading and despreading is possible on all data rates and modulation schemes. The net
transfer rate is reduced by a factor of 15 in this case. For 802.15.4 either 600 or 300 kbps
modes have to be chosen.
The receiver supports multi-channel operation for all data rates and modulation schemes.
Version 2.2
°
C to 85
AX5042
AX5042
AX5042
Circuit Description
is compatible with the low frequency standards of 802.15.4 (ZigBee).
supports any data rate from 0.1 kbps to 200 kbps for FSK, GFSK, GMSK , MSK and from
can be operated from 2.3 V to 2.8 V power supply over a temperature range from
°
C, it consumes 13 - 37 mA for transmitting depending on data mode and output
can be operated in two fundamentally different modes.
is a true single chip low-power CMOS transceiver primarily for use in SRD bands.
features make it an ideal interface for integration into various battery powered
AX5042
is always done via the SPI interface.
AX5042
Circuit Description
AX5042
Datasheet AX5042
Programming
AX5042
AX5042
behaves
are
in
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