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AN332 Datasheet(PDF) 55 Page - Silicon Laboratories |
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AN332 Datasheet(HTML) 55 Page - Silicon Laboratories |
55 / 302 page AN332 Rev. 1.0 55 5.2. Commands and Properties for the FM/RDS Receiver (Si4704/05/06/2x/3x/4x/84/85) Tables 8 and 9 summarize the commands and properties for the FM/RDS Receiver component applicable to Si4704/05/06/2x/3x/4x/84/85. Table 8. FM/RDS Receiver Command Summary Cmd Name Description Available In 0x01 POWER_UP Power up device and mode selection. All 0x10 GET_REV Returns revision information on the device. All 0x11 POWER_DOWN Power down device. All 0x12 SET_PROPERTY Sets the value of a property. All 0x13 GET_PROPERTY Retrieves a property’s value. All 0x14 GET_INT_STATUS Reads interrupt status bits. All 0x15 PATCH_ARGS* Reserved command used for patch file downloads. All 0x16 PATCH_DATA* Reserved command used for patch file downloads. All 0x20 FM_TUNE_FREQ Selects the FM tuning frequency. All 0x21 FM_SEEK_START Begins searching for a valid frequency. All 0x22 FM_TUNE_STATUS Queries the status of previous FM_TUNE_FREQ or FM_SEEK_START command. All 0x23 FM_RSQ_STATUS Queries the status of the Received Signal Quality (RSQ) of the current channel. All 0x24 FM_RDS_STATUS Returns RDS information for current channel and reads an entry from RDS FIFO. Si4705/06, Si4721, Si474x, Si4731/35/37/39, Si4785 0x27 FM_AGC_STATUS Queries the current AGC settings All 0x28 FM_AGC_OVERRIDE Override AGC setting by disabling and forcing it to a fixed value All 0x80 GPIO_CTL Configures GPO1, 2, and 3 as output or Hi-Z. All except Si4730-A10 0x81 GPIO_SET Sets GPO1, 2, and 3 output level (low or high). All except Si4730-A10 *Note: Commands PATCH_ARGS and PATCH_DATA are only used to patch firmware. For information on applying a patch file, see "7.2. Powerup from a Component Patch" on page 216. |
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