GEM3 Dual Band Bluetooth and ANT+ Module Hardware Integration Guide Version 0.1 January 9, 20 North Pole Engineering 221 N 1st St, Minneapolis, MN 55401 www.npe-inc.com 612.305.0440 © North Pole Engineering Inc.
GEM3 Module Hardware Integration Guide Version 0.1 Revision History Version 0.1 North Pole Engineering 221 N 1st St, Minneapolis, MN 55401 www.npe-inc.com 612.305.
GEM3 Module Hardware Integration Guide Version 0.1 CONTENTS 1 OVERVIEW AND KEY FEATURES ..................................................................................................... 4 1.1 FEATURES.............................................................................................................................................. 4 2 SPECIFICATION .................................................................................................................................... 5 2.
GEM3 Module Hardware Integration Guide Version 0.1 1 OVERVIEW AND KEY FEATURES The GEM3 module has been designed to allow OEMs to easily add Bluetooth and ANT+ wireless connectivity in their product offering. The GEM3 module incorporates North Pole Engineering software specifically designed to enable fitness machines such as treadmills, exercise bikes, ellipticals, rowers, stair climbers and step machines, etc.
GEM3 Module Hardware Integration Guide Version 0.1 2 SPECIFICATION 2.1 SPECIFICATION SUMMARY Category RF RF Range Peripherals Feature Bluetooth Implementation 4.2 Single Mode Peripheral ANT+ Broadcast Frequency 2.402-2.480 GHz Maximum Transmit Power +8dBm Minimum Transmit Power -20dBm Receive Sensitivity -103dBm 0 dBm, 1M Phy, 1.82m ht. 0 dBm, Coded Phy, 1.82m ht. Up to 240m line of sight Up to 320m line of sight +8 dBm, 1M Phy, 1.82m ht. +8 dBm, Coded Phy, 1.82m ht.
GEM3 Module Hardware Integration Guide Version 0.1 3.2 PIN DEFINITIONS Pin Number 1 2 3 4 5 Pin Name Function Comment GND P0.03/AIN1 P0.28/AIN4 P0.29/AIN5 P0.02/AIN0 GND Host configurable I/O Host configurable I/O Host configurable I/O Host configurable I/O Connect to GND Plane Low Speed GPIO Low Speed GPIO Low Speed GPIO Low Speed GPIO 6 7 8 9 10 11 12 13 14 15 16 17 18 19 P0.31/AIN7 P0.30/AIN6 P0.05/AIN3 P0.27 P0.07/TRC_CLK P0.26 P0.04/AIN2 P0.06 GND P0.08 P0.11/TRC_D2 P0.12/TRC_D1 P0.00/XL1 P0.
GEM3 Module Hardware Integration Guide 31 32 33 34 35 P0.21/QSPI P0.23/QSPI P0.25 P0.24 P0.22/QSPI Host configurable I/O Host configurable I/O Host configurable I/O Host configurable I/O Host configurable I/O 36 SWDIO SWD Programmer I/O 37 SWDCLK SWD Programmer Clock 38 39 40 41 42 43 44 45 46 47 48 49 50 51 P0.09/NFC1 P0.10/NFC2 GND P1.06 P1.04 P1.07 P1.05 P1.00/TRC_D0 P1.02 P1.01 GND P0.13 P0.15 P0.
GEM3 Module Hardware Integration Guide Version 0.1 3.3 ELECTRICAL SPECIFICATIONS 3.3.1 Absolute Maximum ratings Parameter VDD_nRF VDD_HV VBUS VIO, VDD_nRF <= 3.6V VIO, VDD_nRF > 3.6V Storage Temperature Min -0.3V -0.3V -0.3V -0.3V -0.3V -40C 3.3.2 Recommended Operating Parameters Parameter Min VDD_nRF 1.7V VDD_nRF maximum ripple VDD_nRF Rise time Operating Temperature -40C Max +3.9V +5.8V +5.8V VDD+0.3V 3.9V +85C Typical 3.0V Max 3.
GEM3 Module Hardware Integration Guide Version 0.1 Serial Wire Debug Interface 4.1.3 UART Host The UART is required for communicating between the GEM3 module and fitness machine console using the GEMSAFE or HCI command protocol. Pins 20 and 21 of the GEM3 module have been configured as the UART interface. Pin 20 is the GEM3 module TX line that connects to the Host RX line. Pin 21 is the GEM3 module RX line that connects to the Host TX line. UART Host 4.1.
GEM3 Module Hardware Integration Guide Version 0.1 USB 4.1.5 NFC The GEM3 contains a 13.56 MHz AM receiver and a 13.56 MHz load modulator compatible with the NFC-A listen mode operation defined in the NFC Forum with 106 kbps data rate. The GEM3’s NFC-A support allows for Out-of-Band (OOB) pairing simplifying pairing between two Bluetooth devices by exchanging authentication information over an NFC link. NFC 4.1.6 Reset The GEM3 module can be reset by holding PIN 25 low for 0.5us.
GEM3 Module Hardware Integration Guide Version 0.1 Example Reset Circuit 5 MODULE LAYOUT CONSIDERATIONS 1. Good: Place the module antenna side as close as possible to the board edge. Better: Allow the module antenna area to overhang the edge of the board by ~6.0mm. North Pole Engineering 221 N 1st St, Minneapolis, MN 55401 www.npe-inc.com 612.305.
GEM3 Module Hardware Integration Guide Version 0.1 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. Mechanical items (especially metal) should be kept as far as possible from the module antenna in all directions, including above and below the board surface. If possible, move mechanical items out and away from the keepout area. 4. Bottom layer ground plane under the module strongly recommended.
GEM3 Module Hardware Integration Guide Version 0.1 6 MECHANICAL INFORMATION 7 SOLDERING GUIDELINES See the Stencil pattern above for solder paste application. Recommended Stencil thickness is 120um. 8 REGULATORY & STANDARDS INFORMATION 8.1 FCC & INDUSTRY CANADA The GEM3 module has modular approval for the United States and Canada. To ensure compliance when using the GEM3 module in a design, the OEM is required to adhere to the implementation considerations supplied in this hardware integration guide. 8.
GEM3 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 GEM3 module could void the OEM’s authority to operate the equipment.
GEM3 Module Hardware Integration Guide Version 0.1 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.
GEM3 Module Hardware Integration Guide Version 0.1 Health and Safety – EN60950-1: 2006+A11:2009+A1:2010+A12:2011 Electromagnetic compatibility – EN301489-17 V3.1.1 in accordance with EN 301 489-1 V2.1.1 Radio Frequency Radiated Emissions: EN300 328 V2.1.
GEM3 Module Hardware Integration Guide Version 0.1 8.3 BLUETOOTH QUALIFICATION The GEM3 module has been listed with the Bluetooth Special Interest Group (SIG) as a qualified an End Product. 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. Register as a member of the Bluetooth SIG – www.bluetooth.org 2.
FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. End users must follow the specific operating instructions for satisfying RF exposure compliance. Note 1: This module certified that complies with RF exposure requirement under mobile or fixed condition, this module is to be installed only in mobile or fixed applications.
Cet appareil et son antenne (s) ne doit pas être co-localisés ou fonctionnement en association avec une autre antenne ou transmetteur. This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. Cet équipement est conforme aux limites d'exposition aux rayonnements IC établies pour un environnement non contrôlé.
