SI4X55-C Datasheet, PDF (21/39 Pages) Silicon Laboratories – Preamble sense mode

Si4x55-C
4.3. Configuration Commands
The RCA provides all of the code needed for basic radio configuration. Once the setup is completed in the GUI, the
program outputs configuration array(s) that can be sent to the radio via the SPI interface. No additional setup
coding is needed. The configuration command process is shown in Figure 9. As shown below, the configuration is
sent to the device in two EZCONFIG_ARRAY_WRITE commands with a NOP between them. The second
EZCONFIG_ARRAY_WRITE can be sent after CTS is received for the NOP command. The NOP can be sent
immediately after the first EZCONFIG_ARRAY_WRITE command. EZCONFIG_ARRAY_WRITE uses the same
command code as WRITE_TX_FIFO (0x66). The EZCONFIG_SETUP passes the configuration array to the device
and the EZCONFIG_CHECK insures that all of the configuration data was written correctly. For more information
on the setup commands, refer to “AN692: Si4355/Si4455 Programming Guide” and the EZRadio API
Documentation zip file available from www.silabs.com.
EZCO NFIG _AR R AY_W R ITE
NOP
EZCO NFIG _AR R AY_W R ITE
E Z C O N F IG _C H E C K
Figure 9. Configuration Command Flowchart
Rev 1.0
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