Silicon Laboratories SI4734/35-B20 - Manual (Page 27)

S i 4 7 3 4 / 3 5 - B 2 0
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5. Commands and Properties
Table 14. Si473x Command Summary
Cmd Name Description
0x01 POWER_UP
Power up device and mode selection. Modes include AM/SW/LW or FM
receive, analog or digital output, and reference clock or crystal support.
0x10 GET_REV Returns revision information on the device.
0x11 POWER_DOWN Power down device.
0x12 SET_PROPERTY Sets the value of a property.
0x13 GET_PROPERTY Retrieves a property’s value.
0x14 GET_INT_STATUS Read interrupt status bits.
0x15 PATCH_ARGS Reserved command used for firmware file downloads.
0x16 PATCH_DATA Reserved command used for firmware file downloads.
0x20 FM_TUNE_FREQ Selects the FM tuning frequency.
0x21 FM_SEEK_START Begins searching for a valid frequency
0x22 FM_TUNE_STATUS
Queries the status of previous FM_TUNE_FREQ or FM_SEEK_START
command.
0x23 FM_RSQ_STATUS
Queries the status of the Received Signal Quality (RSQ) of the current chan-
nel (Si4735 only).
0x24 FM_RDS_STATUS
Returns RDS information for current channel and reads an entry from the
RDS FIFO (Si4735 only).
0x40 AM_TUNE_FREQ Tunes to a given AM or SW/LW frequency.
0x41 AM_SEEK_START
Begins searching for a valid AM or SW/LW frequency depending on the
AM_SEEK_BAND_BOTTOM and AM_SEEK_BAND_TOP settings.
0x42 AM_TUNE_STATUS
Queries the status of the already issued AM_TUNE_FREQ or
AM_SEEK_START command.
0x43 AM_RSQ_STATUS Queries the status of the RSQ for the current channel.
0x80 GPO_CTL Configures GPO pins.
0x81 GPO_SET Sets the value of the GPO pins.