link to page 10 RDA Microelectronics, Inc. RDA5807NP FM Tuner V1.2 REG BITS NAME FUNCTION DEFAULT 0ENABLEPower Up Enable. 0 0 = Disabled; 1 = Enabled03H15:6CHAN[9:0]Channel Select. 0x00 BAND = 0Frequency =Channel Spacing (kHz) xCHAN+ 87.0 MHzBAND = 1or 2Frequency =Channel Spacing (kHz) xCHAN + 76.0 MHzBAND = 3Frequency =Channel Spacing (kHz) xCHAN + 65.0 MHzCHAN is updated after a seek operation.5DIRECT MODEDirectly Control Mode, Only used when test. 0 4TUNETune 0 0 = Disable1 = EnableThe tune operation begins when the TUNE bitis set high. The STC bit is set high when thetune operation completes.The tune bit is reset to low automatically whenthe tune operation completes..3:2BAND[1:0]Band Select. 00 00 = 87–108 MHz (US/Europe)01 = 76–91 MHz (Japan)10 = 76–108 MHz (world wide)111= 65 –76 MHz ( East Europe ) or 50-65MHz1:0SPACE[1:0]Channel Spacing. 00 00 = 100 kHz01 = 200 kHz10 = 50kHz11 = 25KHz04H15RSVDReserved 0 14STCIENSeek/Tune Complete Interrupt Enable. 0 0 = Disable Interrupt1 = Enable InterruptSetting STCIEN = 1 will generate a low pulse onGPIO2 when the interrupt occurs.13:12RSVDReserved 00 11DEDe-emphasis. 0 0 = 75 µs; 1 = 50 µs10RSVDReserved9SOFTMUTE_ENIf 1, softmute enable 1 8AFCDAFC disable. 0 If 0, afc work; 1 If 0x07h_bit<9> ( band )=1, 65-76MHz; =0, 50-76MHz The information contained herein is the exclusive property of RDA and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of RDA. Page 10 of 23 Document Outline 1 General Description Features Applications 2 Table of Contents 3 Functional Description 3.1 FM Receiver Synthesizer Power Supply RESET and Control Interface select Control Interface IP2PS Audio Data Interface GPIO Outputs 4 Electrical Characteristics 5 Receiver Characteristics 6 Serial Interface 6.1 IP2PC Interface Timing 7 Register Definition 8 Pins Description 9 Application Diagram 9.1 RDA5807FP Common Application : Bill of Materials: 10 Physical Dimension 11 PCB Land Pattern: 12 Change List Contact Information