SI4720-B20 Datasheet, PDF (36/48 Pages) Silicon Laboratories – BROADCAST FM RADIO TRANSCEIVER FOR PORTABLE APPLICATIONS

Si4720/21-B20
6. Commands and Properties
Table 20. Si472x Command Summary
Cmd
Name
Transmit Commands
0x01
POWER_UP
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x30
0x31
0x32
GET_REV
POWER_DOWN
SET_PROPERTY
GET_PROPERTY
GET_INT_STATUS
PATCH_ARGS
PATCH_DATA
TX_TUNE_FREQ
TX_TUNE_POWER
TX_TUNE_MEASURE
0x33
TX_TUNE_STATUS
0x34
TX_ASQ_STATUS
0x35
TX_RDS_BUFF
0x36
TX_RDS_PS
0x80
GPIO_CTL
0x81
GPIO_SET
Receive Commands
0x01
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x20
0x21
POWER_UP
GET_REV
POWER_DOWN
SET_PROPERTY
GET_PROPERTY
GET_INT_STATUS
PATCH_ARGS
PATCH_DATA
FM_TUNE_FREQ
FM_SEEK_START
0x22
FM_TUNE_STATUS
0x23
FM_RSQ_STATUS
Description
Power up device and mode selection. Modes include FM transmit
and analog/digital audio interface configuration.
Returns revision information on the device.
Power down device.
Sets the value of a property.
Retrieves a property’s value.
Read interrupt status bits.
Reserved command used for patch file downloads.
Reserved command used for patch file downloads.
Tunes to given transmit frequency.
Sets the output power level and tunes the antenna capacitor.
Measure the received noise level at the specified frequency.
Queries the status of a previously sent TX Tune Freq, TX Tune
Power, or TX Tune Measure command.
Queries the TX status and input audio signal metrics.
Queries the status of the RDS Group Buffer and loads new data into
buffer.
Set up default PS strings.
Configures GPO1, 2, and 3 as output or Hi-Z.
Sets GPO1, 2, and 3 output level (low or high).
Power up device and mode selection.
Returns revision information on the device.
Power down device.
Sets the value of a property.
Retrieves a property’s value.
Reads interrupt status bits.
Reserved command used for patch file downloads.
Reserved command used for patch file downloads.
Selects the FM tuning frequency.
Begins searching for a valid frequency.
Queries the status of previous FM_TUNE_FREQ or FM_-
SEEK_START command.
Queries the status of the Received Signal Quality (RSQ) of the cur-
rent channel.
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Rev. 1.0