5. Commands and Properties
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| Table 14. Si473x Command Summary | |
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Cmd | Name |
| Description |
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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. | ||
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0x10 | GET_REV |
| Returns revision information on the device. |
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0x11 | POWER_DOWN |
| Power down device. |
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0x12 | SET_PROPERTY |
| Sets the value of a property. |
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0x13 | GET_PROPERTY |
| Retrieves a property’s value. |
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0x14 | GET_INT_STATUS |
| Read interrupt status bits. |
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0x15 | PATCH_ARGS |
| Reserved command used for firmware file downloads. |
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0x16 | PATCH_DATA |
| Reserved command used for firmware file downloads. |
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0x20 | FM_TUNE_FREQ |
| Selects the FM tuning frequency. |
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0x21 | FM_SEEK_START |
| Begins searching for a valid frequency |
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0x22 | FM_TUNE_STATUS |
| Queries the status of previous FM_TUNE_FREQ or FM_SEEK_START |
| command. | ||
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0x23 | FM_RSQ_STATUS |
| Queries the status of the Received Signal Quality (RSQ) of the current chan- |
| nel (Si4735 only). | ||
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0x24 | FM_RDS_STATUS |
| Returns RDS information for current channel and reads an entry from the |
| RDS FIFO (Si4735 only). | ||
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0x40 | AM_TUNE_FREQ |
| Tunes to a given AM or SW/LW frequency. |
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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. | ||
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0x42 | AM_TUNE_STATUS |
| Queries the status of the already issued AM_TUNE_FREQ or |
| AM_SEEK_START command. | ||
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0x43 | AM_RSQ_STATUS |
| Queries the status of the RSQ for the current channel. |
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0x80 | GPO_CTL |
| Configures GPO pins. |
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0x81 | GPO_SET |
| Sets the value of the GPO pins. |
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Rev. 1.0 | 27 |
