Si4421 RESET MODES | Silicon Laboratories SI4421 guide

Image 34

Silicon Laboratories SI4421 manual Si4421 RESET MODES

Contents

DESCRIPTION FUNCTIONAL BLOCK DIAGRAMFEATURES TYPICAL APPLICATIONS Data Filtering and Clock Recovery DETAILED FEATURE-LEVELDESCRIPTIONRF Power Amplifier PA Si4421 Data Validity Blocks Low Battery Voltage DetectorWake-UpTimer Crystal Oscillator Type Si4421 PACKAGE PIN DEFINITIONSName Function Name Si4421Internal Pin Connections Internal connection Note These pins can be left floating PIN6 Logic Diagram FSK / DATA / nFFSPIN10 Logic Diagram nRES I/O Si4421 Recommended supply decoupling capacitor values Si4421Typical Application Pin Function vs. Operation Mode Absolute Maximum Ratings non-operating Si4421 GENERAL DEVICE SPECIFICATIONSRecommended Operating Range DC Characteristics ELECTRICAL SPECIFICATIONSi4421 AC Characteristics Receiver AC Characteristics PLL parametersSi4421 AC Characteristics Turn-on/Turnaroundtimings Si4421AC Characteristics Transmitter AC Characteristics Others Si4421 Note 10 By design Timing Specification Si4421 CONTROL INTERFACETiming Diagram Control Register Default Values Control CommandsSi4421 2. Power Management Command Description of the Control CommandsConfiguration Setting Command Si4421 Logic connections between power control bits Si4421 5. Receiver Control Command Frequency Setting Command4. Data Rate Command Si4421 VDI Logic Diagram Si4421 6. Data Filter Command Si4421 7.FIFO and Reset Mode Command Si4421 10. AFC Command 8. Synchron Pattern Command9. Receiver FIFO Read Command Si4421 Si4421 Bit 5-4rl1 to rl0 Frequency Setting Command 11. TX Configuration Control CommandSi4421 12. PLL Setting Command 13. Transmitter Register Write CommandSi4421 15.Low Duty-CycleCommand 14. Wake-UpTimer CommandSi4421 Vlb= 2.25 + V · 0.1 V Clock divider configuration Si4421 Si4421 17. Status Read CommandBit Name Si4421 INTERRUPT HANDLING TX REGISTER BUFFERED DATA TRANSMISSION Si4421 Si4421 Typical TX register usage Si4421 RX FIFO BUFFERED DATA READ RECOMMENDED PACKET STRUCTURES Bit Rate 9.6 kbps Si4421 CRYSTAL SELECTION GUIDELINESBit Rate 2.4 kbps Bit Rate 38.4 kbps Si4421 RX-TXALIGNMENT PROCEDURES Si4421 RESET MODES SW Reset Command Sensitive Reset Enabled, Ripple on VddFIFO and Reset Mode Command page Si4421 Si4421 TYPICAL PERFORMANCE CHARACTERISTICS Channel Selectivity and Blocking BER Curves in 433 MHz Band Si4421BER Curves in 868 MHz Band Si4421 434 MHz Evaluation Board with 50 Ohm Matching Network Si4421 REFERENCE DESIGNSSchematics Frequency Dependent Component Values Si4421 PCB Layout Top View Bottom View Evaluation Board with Resonant PCB Antenna BIFA SchematicsSi4421 Frequency Dependent Component Values PCB Layout Antenna designed for 868/915 MHz band Si4421Top View Bottom View 16-pinTSSOP Si4421 PACKAGE INFORMATIONSee Detail “A” Section B-B Demo Boards and Development Kits RELATED PRODUCTS AND DOCUMENTSSi4421 Universal ISM Band FSK Transceiver Related Resources Si4421