GEM 2 Dual Band Bluetooth and ANT+ Module Hardware Integration Guide Version 0.1 July 27, 16 Wahoo Fitness 90 W. Wieuca Road N.E. Suite 110 Atlanta, GA 30342 Telephone: 1‐877‐978‐1112 Email: support@wahoofitness.com www.wahoofitness.
GEM 2 Module Hardware Integration Guide Version 0.1 © Wahoo Fitness LLC 2015 Revision History Version 0.1 Wahoo Fitness 90 West Wieuca Road, Suite 110 Atlanta, GA 30342 www.wahoofitness.
GEM 2 Module Hardware Integration Guide Version 0.
GEM 2 Module Hardware Integration Guide Version 0.1 Overview and Key Features The GEM module has been designed to allow OEMs to easily add Bluetooth and ANT+ wireless connectivity in their product offering. The GEM 2 module incorporates Wahoo Fitness software specifically designed to enable fitness machines such as treadmills, exercise bikes, ellipticals, rowers, stair climbers and step machines to wirelessly communicate exercise data with smart phone or tablets as well as leaderboard software systems.
GEM 2 Module Hardware Integration Guide Version 0.1 Specification Specification Summary Category RF Peripherals Feature Bluetooth Implementation 4.1 Single Mode Peripheral ANT+ Broadcast Frequency 2.402‐2.480 GHz Maximum Transmit Power +4dBm Minimum Transmit Power ‐20dBm Receive Sensitivity ‐96dBm Range UART Host Interface up to TBDm line of sight TX, RX 115.
GEM 2 Module Hardware Integration Guide Version 0.1 Hardware Specifications Block Diagrams and Pinout Hardware Block Diagram Software Diagram (SW DCLK) ( P0.28) 4 22 (SW DI O) ( P0.29) 5 21 (P0.1 6) ( P0.30) 6 20 (P0.1 5) ( P0.31) 7 19 (P0.14) ( P0.05) 8 18 (VCC) ( PAI R) 9 17 (GND) ( NF C 2) 16 (RESERVED) 23 ( P0 .0 8) 14 24 ( P 0.27) 3 ( NF C 1) 15 ( P0.26) 2 ( P0 .0 7) 13 (P0.21/RST) ( P0 .0 2) 12 (G N D) 25 ( LED1) 10 26 (GND) 1 ( P0 .
GEM 2 Module Hardware Integration Guide Version 0.1 Pin Definitions Pin number 0 1 2 3 Pin Name GND GND SPI Enable LED 4 5 6 7 8 9 Programmable I/O Programmable I/O Programmable I/O Programmable I/O NC NC 10 NC 11 12 NC PAIR 13 14 15 16 17 18 19 UART TX/SPI MISO UART RX/SPI MOSI NFC1 NFC2 GND VCC UART CTS/SPI Slave Event UART RTS/SPI SS GPIO/SPI SCLK RESET/SWDIO SWCLK Wake RESET GND 20 21 22 23 24 25 26 Wahoo Fitness 90 West Wieuca Road, Suite 110 Atlanta, GA 30342 www.wahoofitness.
GEM 2 Module Hardware Integration Guide Version 0.1 Electrical Specifications Absolute Maximum ratings Maximum and minimum ratings for digital and analog pins are listed below. Parameter VCC Voltage Voltage at VIO Storage Temperature Min ‐0.3V ‐0.3V ‐40C Recommended Operating Parameters Parameter Min VCC 1.7V VCC maximum ripple VCC Rise time Operating Temperature @ 3.3V ‐40C Max +3.9V VCC+.3V +85C Typical 3.0V Max 3.
GEM 2 Module Hardware Integration Guide Version 0.1 Example for Serial Wire Debug Interface UART Host The UART is required for communicating between the GEM 2 module and fitness machine console using the GEMSAFE or HCI command protocol. Pins 13 and 14 of the module have been configured as the UART interface. Pin 13 is the UART TX line and pin 14 is the UART RX line. Reset The GEM 2 module can be reset by holding PIN 25 low for 0.5us.
GEM 2 Module Hardware Integration Guide Version 0.1 Module Layout Considerations 1. Good: Place module antenna side as close as possible to the board edge. Better: Allow module antenna area to overhang the edge of the board by ~5.6mm. 2. Good: Define a copper keepout area approx. 53mm x 20mm, 6mm in from module edge. Better: Increase the keepout area, starting at 6mm in from module edge. 3.
GEM 2 Module Hardware Integration Guide Version 0.1 Antenna Characteristics The GEM 2 module includes an integrated monopole chip antenna. Antenna performance will depend on host PCB layout. The following plots show antenna radiation pattern of the GEM 2 antenna. 2.4GHz 2.442GHz 2.484GHz Antenna Gain: 5.46dBi (Typ.) Wahoo Fitness 90 West Wieuca Road, Suite 110 Atlanta, GA 30342 www.wahoofitness.
GEM 2 Module Hardware Integration Guide Version 0.1 Mechanical Information Dimensions (in mm) Top View Side View Recommended Pad Layout The land pattern dimensions can be modified based on experience. Wahoo Fitness 90 West Wieuca Road, Suite 110 Atlanta, GA 30342 www.wahoofitness.
GEM 2 Module Hardware Integration Guide Version 0.1 Tape and Reel Information TBD Soldering Guidelines See the Stencil pattern above for solder paste application. Recommended Stencil thickness is 120um. Regulatory & Standards Information FCC & Industry Canada The GEM 2 module has modular approval for the United States and Canada. To ensure compliance when using the GEM 2 module in a design, the OEM is required to adhere to the implementation considerations supplied in this hardware integration guide.
GEM 2 Module Hardware Integration Guide Version 0.1 Label and text information type should be large enough to be legible and consistent with the dimensions of the equipment and the label. The type size is not required to be larger than eight points. Comments The OEM should have their device tested by a qualified test house to verify compliance with FCC Part 15 Subpart B limits for unintentional radiators. Any modifications to the GEM 2 module could void the OEM’s authority to operate the equipment.
GEM 2 Module Hardware Integration Guide Version 0.1 tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. IC Radiation Exposure Statement This device is in compliance with SAR for general population/uncontrolled exposure limits in IC RSS‐102 and had been tested in accordance with the measurement methods and procedures specified in IEEE 1528.
GEM 2 Module Hardware Integration Guide Version 0.1 CE The GEM 2 Module has been tested against the appropriate regulatory standards for European market. OEMs should consult a qualified test house to ensure their product meets all regulatory requirements. The GEM Module Declaration of Conformities is below. Test reports are available upon request. Health and Safety – EN60950‐1: 2006+A11:2009+A1:2010+A12:2011 Electromagnetic compatibility – EN301489‐17 Vx.x.x in accordance with EN 301 489‐1 V1.8.
GEM 2 Module Hardware Integration Guide Version 0.1 Bluetooth Qualification The GEM 2 module has been listed with the Bluetooth Special Interest Group (SIG) as a qualified an End Product. The Wahoo Fitness Declaration ID is: TBD The Bluetooth SIG requires every product implementing Bluetooth technology to have a Declaration ID even though the end product references a Bluetooth design with its own Declaration ID. An over of the Bluetooth SIG Qualification Process is as follows: 1.
