AX5043-QFN28-TU AXSEM, AX5043-QFN28-TU Datasheet - Page 30

• Manufacturer Part Number: AX5043-QFN28-TU
• Description: RF Transceiver Narrow-Band-IC
• Manufacturer: AXSEM

Specifications of AX5043-QFN28-TU

• Number Of Receivers: 1
• Number Of Transmitters: 1
• Wireless Frequency: 70 MHz to 1050 MHz
• Interface Type: SPI
• Output Power: 18 dBm to 22 dBm
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Maximum Supply Current: 60 mA
• Minimum Operating Temperature: - 40 C
• Modulation: ASK, FSK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Note: HDLC mode follows High-Level Data Link Control (HDLC, ISO 13239) protocol.
Circuit Description
Basic FIFO status (EMPTY, FULL, Overrun, Underrun, FIFO fill level above threshold, FIFO free space
above threshold) are also provided during each SPI access on MISO while the micro- controller
shifts out the register address on MOSI. See the SPI interface section for details. This feature
significantly reduces the number of SPI accesses necessary during transmit and receive.
Packet Modes
The
since the flag and bit-stuffing mechanism. The
packet length with a byte indicating the length of the packet.
In packet-modes a CRC can be computed automatically.
HDLC
automatic packet-delimiting and optional packet-correctness-check by inserting and
checking a cyclic redundancy check (CRC) field.
The packet structure is given in the following table.
Flag
8 bit
HDLC packets are delimited with flag sequences of content 0x7E.
In
can be programmed to be CRC-CCITT, CRC-16 or CRC-32.
The receiver checks the CRC, the result can be retrieved from the FIFO, the CRC is appended to the
received data.
To calculate the optimal settings for HDLC communication as well as Wireless M-Bus use the
AXSEM
Version 0.2
AX5043
AX5043
1
Mode is the main framing mode of the AX5043. In this mode, the
AX5043
Address Control
8 bit
the meaning of address and control is user defined. The Frame Check Sequence (FCS)
offers different packet modes. For arbitrary packet-sizes HDLC is recommended
configuration software.
8 or 16 bit
Information
Variable length, 0 or more bits in multiples of 8 16 / 32 bit
Preliminary
AX5043
also offers packet modes with fixed
FCS
AX5043
Datasheet AX5043
(Optional
Flag)
8 bit
performs