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EETE SEPT 2013

Microchip’s Bluetooth Solution Bluetooth Module Implements iAP Host Microcontroller: Application RN41APL-I/RM RN42APL-I/RM Host Microcontroller: Application RN41APL-I/RM RN42APL-I/RM iAP Authentication Chip = SERIAL DATA = AUTHENTICATION Microcontroller iAP Authentication Chip = SERIAL DATA = AUTHENTICATION Microcontroller ■ Low-cost host microcontroller ■ Simple host interface ■ iAP transparent to user ■ Developers focus on their designs not iAP protocols ■ Interfaces to the system independent of smartphone Wireless Product Solutions Embedded Bluetooth Products Key Features ■ Fully certified Class 1, Class 2, Bluetooth 2.1 + EDR, and 3.0 modules ■ Onboard embedded Bluetooth stack works with or without external microcontroller ■ Supports streaming data and voice/audio communication ■ Supports Bluetooth data and audio link to Android and iPhone ■ HID and Audio profiles on Android and iPhone Bluetooth Products Part # Typical Range (meters) Interface Output Power (dBm) Package Antenna Size (mm) Bluetooth® Development Tool 100 UART, USB +15 Surface RN41-I/RM (Class 1) mount Chip 13.4 × 25.8 × 2.0 2.1 RN-41-EK 30 UART, USB +4 Surface RN42-I/RM (Class 2) mount PCB trace 13.4 × 25.8 × 2.0 2.1 RN-42-EK RN52-I/RM (Class 2) 30 UART, USB, I2S™, S/PDIF, GPIO +4 Surface mount PCB trace 13.5 × 26.0 × 2.7 3.0 RN-52-EK RN41XVC-I/RM RN41XVU-I/RM (Class 1) 100 UART, USB +15 Socket (male header) Chip, U.FL 24.4 × 29.9 × 8.0 2.1 RN-XV-EK1 RN42XVP-I/RM RN42XVU-I/RM 30 UART, USB +4 Socket (Class 2) (male header) PCB trace, U.FL 24.4 × 29.9 × 8.0 2.1 Smartphone Communication Microchip’s Bluetooth modules work seamlessly with Android and iPhone smartphones. Audio and voice communication are compatible with iAP devices, however establishing Bluetooth data connections with iAP devices requires a unique discovery/pairing sequence and negotiation with the iOS authentication co-processor. A special ‘APL’ part number allows for iPod Accessory Profile (iAP) bi-directional data connections. They interface directly to the authentication co-processor and manage authentication, reducing engineering effort and simplifying accessory product design. The diagram below illustrates how the iAP-compatible module provides a direct hardware connection to the authentication co-processor. Conventional Approach Customer Implements iAP on Microcontroller Host Microcontroller: Application iAP Authentication Host Microcontroller: Application iAP Authentication Bluetooth Module Bluetooth Module = SERIAL DATA = AUTHENTICATION Microcontroller iAP Authentication Chip = SERIAL DATA = AUTHENTICATION Microcontroller iAP Authentication Chip ■ High-end microcontroller ■ Management of iAP in embedded software ■ Longer development cycles and learning curve for iAP IMPORTANT: All products designed to connect to iPhones, iPods and iPads® including those that incorporate the Microchip Bluetooth APL module, must be approved with Apple’s Made for iPod (MFi) program. Developers of such products should visit Apple’s developer portal at: http://developer.apple.com/ipod to enroll. MFi membership is required to purchase the evaluation kit or modules. www.microchip.com/bluetooth


EETE SEPT 2013
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