GEM3NFC Hardware Manual Version 1.0 August 31, 2020 NORTH POLE ENGINEERING INTELLECTUAL PROPERTY THIS DOCUMENT IS INTENDED FOR USE BY APPLICATION DEVELOPERS TO CREATE APPLICATIONS COMPATIBLE WITH THE NORTH POLE ENGINEERING GEM MODULE. USE OF THE TECHNICAL INFORMATION CONTAINED IN THIS DOCUMENT TO CREATE COMPETING HARDWARE TO THE NORTH POLE ENGINEERING GEM MODULE IS STRICTLY PROHIBITED. North Pole Engineering 221 N 1st St, Minneapolis, MN 55401 www.npe-inc.com 612.305.0440 © North Pole Engineering Inc.
Revision History Version Revision Date Change History 0.1 October 2, 2019 Initial draft 0.2 October 30, 2019 Added mechanical drawing 0.3 April 13, 2020 Added UART connection note, added power consumption data for different modes 1.
Table of Contents Revision History ...................................................................................................................................... 2 Overview and Key Features ................................................................................................................ 4 Features ................................................................................................................................................................ 4 Specification .............
GEM3NFC Hardware Manual Overview and Key Features The GEM3NFC module is been designed to allow OEMs to easily add Bluetooth, ANT+, Apple GymKit, Samsung Galaxy Active/Active 2 and NFC reader connectivity in their product offering. The GEM3NFC module is based on Nordic Semicondutor’s nRF52840 multi-protocol Bluetooth and ANT+ chipset and integrates NXP’s PN7150X NFC reader controller. There is also space on the board for the Apple authentication 3.
• Integrated NFC tap to pair support for wearables including Apple Watch through GymKit and Samsung Galaxy Active/Active2 Watches. North Pole Engineering 221 N 1st St, Minneapolis, MN 55401 www.npe-inc.com 612.305.0440 © North Pole Engineering Inc.
Specification Specification Summary Category Feature Implementation RF Bluetooth 5.0 Single Mode Peripheral and Central ANT+ Broadcaster and receiver Frequency 2.402-2.480 GHz Maximum Transmit Power +2dBm Minimum Transmit Power -20dBm Receive Sensitivity -95dBm Range up to 360m line of sight Reader Tag Type 1,2,3,4,5 Frequency 13.
Software Diagram
GEM3NFC Overview Overview The following picture provides an overview of the various hardware elements of GEM3NFC board. NFC Tag Board Connector NFC Antenna GEM3 NFC Reader Data, Power & I/O Data, power, & I/O connector The data, power, and I/O connector provides a means to connect a supply voltage of 3.3V to the GEM3NFC module as well as UART TX and RX lines for serial communications between the GEM3NFC module and the fitness equipment console MCU.
NFC Tag Board Connection The GEM3NFC module includes an additional connector to support connection of an NFC tag board using I2C communications. Pinout of the I2C interface is shown below: NFC TAG P2 TP3 TP4 TP5 TAG_I2C_SCL TAG_FD TAG_I2C_SDA 1 2 3 4 5 V3R3 C4 4.7uF GND GND NFC Reader The GEM3NFC module incorporates an NFC reader chip allowing for decoding of compatible NFC tags for user identification for example.
Power Consumption Power Mode Average (mA) Peak (mA) Standby 0.890 1 NFC Polling 7 135 NFC Read & Connection 37 228 Watch Connected 2 14 BLE Only 1.5 7 ANT+ Only 1 4 North Pole Engineering 221 N 1st St, Minneapolis, MN 55401 www.npe-inc.com 612.305.0440 © North Pole Engineering Inc.
GEM3NFC Considerations 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 a keepout area of 53mm x 20mm from the GEM3NFC module edge. Antenna Characteristics The GEM3NFC module includes an integrated monopole chip antenna. Antenna performance will depend on host PCB layout. The following plots show antenna radiation pattern of the GEM3NFC antenna.
Mechanical Information Dimensions (in mm) Connecting GEM3NFC to Console MCU The GEM3NFC is designed for connection to fitness equipment console MCUs through its Serial interface. The GEM3NFC serial interface has a TX line and RX line that are 3.3V tolerant and operate at 115.2Kpbs. North Pole Engineering 221 N 1st St, Minneapolis, MN 55401 www.npe-inc.com 612.305.0440 © North Pole Engineering Inc.
GEM3NFC Host Protocol The GEM3NFC supports North Pole Engineering’s GEMHCI protocol for communication between the GEM3NFC board and the console MCU using the GEM3NFC module’s serial host connection. The GEMHCI protocol supports a port speed of 115.2Kbps. The GEMHCI protocol is a binary protocol and is used to configure the GEM3NFC operation as well as pass fitness equipment related data to the GEM3NFC for broadcasting to connection applications using its Bluetooth/ANT+ radio.
ISO/IEC 14443B card mode Regulatory & Standards Information FCC & Industry Canada The GEM3NFC module has modular approval for the United States and Canada. To ensure compliance when using the GEM3NFC module in a design, the OEM is required to adhere to the implementation considerations supplied in this hardware integration guide. Federal Communication Commission (FCC) Radiation Exposure Statement: This device is in compliance with SAR for general population/uncontrolled exposure limits in ANSI/IEEE C95.
FCC Labeling Requirements WARNING: The OEM must ensure that FCC labeling requirements are met. This includes a clearly visible label on the outside of the OEM enclosure specifying the appropriate FCC identifier is visible. Contains FCC ID: XRH-NPE109 IC: 11922A-NPE109 If OEM device is larger than 8x10cm, the following FCC part 15.19 statement has to be visible on outside of device: The enclosed device complies with Part 15 of the FCC Rules.
CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION. Industry Canada (IC) Warning: This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate Canadian authorization. NOTE IMPORTANTE: Dans le cas où ces conditions ne peuvent être satisfaites (par exemple pour certaines configurations d'ordinateur portable ou de certaines co-localisation avec un autre émetteur), l'autorisation du Canada n'est plus considéré comme valide et l'ID IC ne peut pas être utilisé sur le produit final.
CE The GEM3NFC 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 GEM3NFC 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 V2.2.1 in accordance with EN 301 489-1 V1.9.2 Radio Frequency Radiated Emissions: EN300 328 V1.9.
You can find more details on the Bluetooth SIG listing process at the following webpage: https://www.bluetooth.org/en-us/test-qualification/qualification-overview Ordering Details Part Number Trays GEMNFC0301 100 pieces Shipping Weight MOQ 100 Multiple 100 Further Assistance Please contact North Pole Engineering at 1-612-305-0440 or via email at sales@npeinc.com if additional help is needed.
