RDA Microelectronics, Inc. RDA5807MP FM Tuner V1.0 2.4RESET and Control Interface select from MCU, and when in read transfer, data bytes is read out from RDA5807MP. There is no visible register address in I2C interface transfers. The I2C The RDA5807MP is RESET itself When VDD is interface has a fixed start register address (0x02h Power up. And also support soft reset by trigger for write transfer and 0x0Ah for read transfer), and 02H BIT1 from 0 to 1. T he RDA5807MP only an internal incremental address counter. If register support I2 C control interface bus mode. address meets the end of register file, 0x3Ah, register address will wrap back to 0x00h. For write transfer, MCU programs registers from register 0x02h high byte, then register 0x02h low byte, 2.5Control Interface then register 0x03h high byte, till the last register. RDA5807MP always gives out ACK after every The RDA5807MP only supports I 2 C control byte, and MCU gives out STOP condition when interface. register programming is finished. For read transfer, after command byte from MCU, RDA5807MP The I 2 C interface is compliant to I 2 C Bus sends out register 0x0Ah high byte, then register Specification 2.1. It includes two pins: SCLK and 0x0Ah low byte, then register 0x0Bh high byte, till SDIO. A I2C interface transfer begins with START receives NACK from MCU. MCU gives out ACK condition, a command byte and data bytes, each for data bytes besides last data byte. MCU gives byte has a followed ACK (or NACK) bit, and ends out NACK for last data byte, and then with STOP condition. The command byte includes RDA5807MP will return the bus to MCU, and a 7-bit chip address (0010000b) and a R/W bit. MCU will give out STOP condition. The ACK (or NACK) is always sent out by receiver. When in write transfer, data bytes is written out 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 4 of 21 Document Outline General Description Features Applications Table of Contents Functional Description FM Receiver Synthesizer Power Supply RESET and Control Interface select Control Interface Electrical Characteristics Receiver Characteristics Serial Interface I2C Interface Timing Register Definition Pins Description Application Diagram Audio Loading Resistance Larger than 32Ω & Reference Clock Application: Bill of Materials: Audio Loading Resistance Larger than 32Ω & DCXO Application: Bill of Materials: Physical Dimension PCB Land Pattern Change List Contact Information
