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© Semiconductor Components Industries, LLC, 2016
September, 2016 - Rev. 3
1 Publication Order Number:
AND9348/D
AND9348/D
AX5051 Programming
Manual
OVERVIEW
AX5051 is a true single chip low-power CMOS
transceiver primarily for use in SRD bands. 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.
Connecting the AX5051 to a Micro-Controller
Th AX5051 can easily be connected to any
micro-controller. The micro-controller communicates with
the AX5051 via a register file that is implemented in the
AX5051 and that can be accessed serially via an industry
standard Serial Peripheral Interface (SPI) protocol.
Reset can be performed via a dedicated signalling line or
via the register file. Therefore, and due to an integrated
power-on-reset (POR) block this signal is optional.
The AX5051 sends and receives data via the SPI port in
frames. This standard operation mode is called frame mode.
In frame mode, the internal communication controller
performs frame delimiting, and data is received and
transmitted via a 4 level x 10 bit FIFO, accessible via the
register file. Figure 1 shows the corresponding diagram.
Connecting the interrupt line is highly recommended,
though not strictly required.
AX5051
micro‐
controller
CLK
MISO
MOSI
IRQ
SEL
RESET_N
SYSCLK
SPI
communication
µC clock input
Interrupt in
optional
recommended
optional
Figure 1. Connection Diagram with a micro-controller
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APPLICATION NOTE
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