Datasheet RN52 (Microchip) - 5

RN52 TABLE 1-4: PIN DESCRIPTION(1) (SHEET 2 OF 3) Directio Defau Pin Symbol I/O Type Description n lt
5 GPIO4 Digital Factory Reset mode. To reset the module to the Input Low factory defaults, GPIO4 should be high on power-up and then toggle low, high, low, high with a 1 second wait between the transitions. During runtime, the module wil enter voice com- mand mode if this pin is driven low. Reserved. Not available for reconfiguring as a general purpose IO pin. 6 GPIO5 Bidirectional with program- Programmable I/O I/O High mable strength internal pull-up/down 7 GPIO12 Bidirectional with program- Programmable I/O I/O High mable strength internal pull-up/down 8 GPIO13 Bidirectional with program- Programmable I/O I/O High mable strength internal pull-up/down 9 GPIO11 Bidirectional with program- Programmable I/O I/O High mable strength internal pull-up/down 10 GPIO10 Bidirectional with program- Programmable I/O I/O High mable strength internal pull-up/down 11 GPIO9 Digital When you drive this signal low, the module’s Input High UART goes into Command mode. If this signal is asserted high, the UART is in Data mode. Reserved 12 USBD- Bidirectional USB data minus I/O 13 USBD+ Bidirectional USB data plus with selectable internal 1.5 Kohm I/O pull-up resistor 14 UART_RTS CMOS output, tri-state, with UART request to send active low Output weak internal pull-up 15 UART_CTS CMOS input with weak UART clear to send active low Input internal pull-down 16 UART_TX CMOS output, tri-state, with UART data output Output weak internal pull-up 17 UART_RX CMOS input with weak UART data input Input internal pull-down 18 GND Ground Ground 19 GPIO7 Bidirectional with program- Driving this pin low sets the UART baud rate to I/O High mable strength internal 9,600. By default, the pin is high with a baud rate pull-up/down of 115,200 20 GPIO6 Bidirectional with program- Programmable I/O I/O High mable strength internal pull-up/down 21 PWREN Analog Pull high to power up RN52 Input Low 22 VDD 3.3-V power input 3.3V power input 23 PCM_IN CMOS input, with weak Synchronous data input, configurable for Input internal pull down SPDIF_IN or SD_IN (I2S)  2015 Microchip Technology Inc. DS70005120A-page 5 Document Outline RN52 Features: Applications: RN52 Block Diagram: 1.0 Device Overview TABLE 1-1: General Specifications TABLE 1-2: Weight and Dimensions TABLE 1-3: Electrical Characteristics FIGURE 1-1: Module Dimensions FIGURE 1-2: Recommended PCB Footprint FIGURE 1-3: Pin Diagram TABLE 1-4: Pin Description(1) (Sheet 1 of 3) 1.1 Audio Interface Circuit Description 1.1.1 Digital Audio Interface FIGURE 1-4: I2S and SPDIF Connections 1.1.2 Analog Audio Interface FIGURE 1-5: RN52 Audio Interface Block Diagram FIGURE 1-6: Stereo CODEC Audio Input/Output Stages 1.1.3 Analog-to-Digital Converter (ADC) FIGURE 1-7: ADC Analog Amplifier Block Diagram 1.1.4 Digital-to-Analog Converter (DAC) 1.1.4.1 Speaker Output 1.1.4.2 Microphone Input TABLE 1-5: Digital to Analog Converter TABLE 1-6: AnaLog to Digital Converter 1.2 General Purpose IO (GPIO) Ports TABLE 1-7: Digital Input and Output Voltage Levels 1.3 Power Consumption TABLE 1-8: Power Consumption 2.0 Applications 2.1 Minimizing Radio Interference FIGURE 2-1: Minimizing Radio Interference FIGURE 2-2: PCB Example Layout 2.2 LED Interface FIGURE 2-3: LED interface TABLE 2-1: Status LED Functions 2.3 Device Firmware Updates FIGURE 2-4: USB DFU Port and GPIO3 Schematic 2.4 Restore Factory Defaults with GPIO4 2.5 Power Control and Regulation 2.6 Solder Reflow Profile TABLE 2-2: Paste Solder Recommendations FIGURE 2-5: Solder Reflow Temperature Profile FIGURE 2-6: Solder Reflow Curve 2.7 Typical Application Schematic FIGURE 2-7: Typical Application Circuit for A2DP Audio Streaming and AVRCP Remote Control 3.0 Bluetooth SIG Certification 4.0 Regulatory Approval 4.1 United States 4.1.1 Labeling and User Information Requirements 4.1.2 RF Exposure 4.1.3 HELPFUL WEB SITES 4.2 Canada 4.2.1 Labeling and User Information Requirements 4.2.2 Helpful Web Sites 4.3 Europe 4.3.1 Labeling and User Information Requirements 4.3.2 Antenna Requirements 4.3.3 Helpful Web Sites TABLE 4-1: European Compliance Testing 4.4 Australia 4.4.1 Helpful Web Sites 4.5 New Zealand 4.5.1 Helpful Web Sites 5.0 Ordering Information TABLE 5-1: Ordering Information(1) 6.0 Revision History Revision A (September 2015) Notes: RN52 Bluetooth® Audio Module AMERICAS Corporate Office Atlanta Austin, TX Boston Chicago Cleveland Dallas Detroit Houston, TX Indianapolis Los Angeles New York, NY San Jose, CA Canada - Toronto ASIA/PACIFIC Asia Pacific Office Hong Kong Australia - Sydney China - Beijing China - Chengdu China - Chongqing China - Dongguan China - Hangzhou China - Hong Kong SAR China - Nanjing China - Qingdao China - Shanghai China - Shenyang China - Shenzhen China - Wuhan China - Xian ASIA/PACIFIC China - Xiamen China - Zhuhai India - Bangalore India - New Delhi India - Pune Japan - Osaka Japan - Tokyo Korea - Daegu Korea - Seoul Malaysia - Kuala Lumpur Malaysia - Penang Philippines - Manila Singapore Taiwan - Hsin Chu Taiwan - Kaohsiung Taiwan - Taipei Thailand - Bangkok EUROPE Austria - Wels Denmark - Copenhagen France - Paris Germany - Dusseldorf Germany - Karlsruhe Germany - Munich Italy - Milan Italy - Venice Netherlands - Drunen Poland - Warsaw Spain - Madrid Sweden - Stockholm UK - Wokingham Worldwide Sales and Service