Silicon Laboratories SI4734/35-B20 manual Commands and Properties, Si473x Command Summary, Cmd

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Si4734/35-B20

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.

 

 

 

 

Rev. 1.0

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Image 27
Contents Description FeaturesFunctional Block Diagram ApplicationsSi4734/35-B20 Table of Contents Recommended Operating Conditions Electrical SpecificationsParameter Symbol Test Condition Min Typ Max Unit Parameter Symbol Value UnitSupplies and Interface DC CharacteristicsParameter Symbol Test Condition Min Typ Max Unit FM Mode AM/SW/LW ModeParameter Symbol Min Typ Max Unit RSTGPO1, GPO2/INT Start Wire Control Interface Characteristics1,2,3Sclk Sdio Sclk SENSPI Control Interface Write Timing Parameters Dclk DFS Dout FM Receiver Characteristics1,2 RDS Bler 5%Fmdeemphasis = Si4734/35-B20 KHz Long Wave LW 153 279 Refclkprescale RefclkCrystal Oscillator Si4734/35-GM Typical Application SchematicBill of Materials Components Value/Description SupplierOptional Components 3.6V Functional DescriptionOverview 5.5SW Receiver Operating ModesFM Receiver AM ReceiverDigital Audio Interface Si4735 Only Audio Data FormatsAudio Sample Rates I2S Digital Audio Format RDS/RBDS Processor Si4735 Only Stereo Audio Processing De-emphasisStereo DAC Soft MuteReference Clock TuningBus Mode Select on Rising Edge SeekSPI Control Interface Mode GPO Outputs Firmware UpgradesReset, Power Up, and Power Down Programming with CommandsDescription Commands and PropertiesSi473x Command Summary CmdSi473x Property Summary Prop Name Description DefaultAmchannelfilter RdsconfigRxvolume AmdeemphasisPin Numbers Name Description Pin Descriptions Si4734/35-GMRDS/RBDS Ordering GuidePart Number Description Package Operating QFNPackage Markings Top Marks Si4734/35 Top MarkTop Mark Explanation Package Outline Si4734/35 QFN Symbol Millimeters Min Nom MaxPCB Land Pattern PCB Land Pattern Si4734/35 QFNPCB Land Pattern Dimensions Symbol Millimeters Min MaxBSC Additional Reference Resources Revision 0.4 to Revision Document Change ListContact Information

SI4734/35-B20 specifications

Silicon Laboratories SI4734/35-B20 is an advanced, highly integrated broadcast radio receiver designed for various consumer applications. Hailed for its compactness and versatility, the SI4734/35-B20 offers extensive features that enable radio reception across multiple frequency bands, including AM, FM, and shortwave. It caters to the needs of manufacturers looking to incorporate reliable radio capabilities into their devices, ensuring quality sound and performance without the cumbersome designs typically associated with traditional radio receivers.

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