Connect Tech M.2 Gps Gnss Receiver User Guide

User Guide
M.2 GPS
CTIM-000454 Revision 0.01 2021-03-01

PREFACE

Disclaimer

The information contained within this user’s guide, including but not limited to any product specification, is subject to change without notice.
Connect Tech assumes no liability for any damages incurred directly or indirectly from any technical or typographical errors or omissions contained herein or for discrepancies between the product and the user’s guide.

Customer Support Overview

If you experience difficulties after reading the manual and/or using the product, contact the Connect Tech reseller from which you purchased the product. In most cases, the reseller can help you with product installation and difficulties.

In the event that the reseller is unable to resolve your problem, our highly qualified support staff can assist you. Our support section is available 24 hours a day, 7 days a week on our website at: https://connecttech.com/support/resource-center/. See the contact information section below for more information on how to contact us directly. Our technical support is always free.

Contact Information

Limited Product Warranty

Connect Tech Inc. provides a 2-year Warranty for this product. Should this product, in Connect Tech Inc.’s opinion, fail to be in good working order during the warranty period, Connect Tech Inc. will, at its option, repair or replace this product at no charge, provided that the product has not been subjected to abuse, misuse, accident, disaster or non-Connect Tech Inc. authorized modification or repair.
You may obtain warranty service by delivering this product to an authorized Connect Tech Inc. business partner or to Connect Tech Inc. along with proof of purchase. The product returned to Connect Tech Inc.
must be pre-authorized by Connect Tech Inc. with an RMA (Return Material Authorization) number marked on the outside of the package and sent prepaid, insured and packaged for safe shipment.
Connect Tech Inc. will return this product by prepaid ground shipment service.

The Connect Tech Inc. Limited Warranty is only valid over the serviceable life of the product. This is defined as the period during which all components are available. Should the product prove to be irreparable, Connect Tech Inc. reserves the right to substitute an equivalent product if available or to retract the Warranty if no replacement is available.

The above warranty is the only warranty authorized by Connect Tech Inc. Under no circumstances will Connect Tech Inc. be liable in any way for any damages, including any lost profits, lost savings or other incidental or consequential damages arising out of the use of, or inability to use, such product.

Copyright Notice

The information contained in this document is subject to change without notice. Connect Tech Inc. shall not be liable for errors contained herein or for incidental consequential damages in connection with the furnishing, performance, or use of this material. This document contains proprietary information that is protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Connect Tech, Inc.

Copyright © 2021 by Connect Tech, Inc.

Trademark Acknowledgment

Connect Tech, Inc. acknowledges all trademarks, registered trademarks, and/or copyrights referred to in this document as the property of their respective owners. Not listing all possible trademarks or copyright acknowledgments does not constitute a lack of acknowledgment to the rightful owners of the trademarks and copyrights mentioned in this document.

ESD Warning

Electronic components and circuits are sensitive to ElectroStatic Discharge (ESD). When handling any circuit board assemblies including Connect Tech COM Express carrier assemblies, it is recommended that ESD safety precautions be observed. ESD safe best practices include, but are not limited to:

• Leaving circuit boards in their antistatic packaging until they are ready to be installed.
• Using a grounded wrist strap when handling circuit boards, at a minimum you should touch a grounded metal object to dissipate any static charge that may be present on you.
• Only handling circuit boards in ESD safe areas, which may include ESD floor and table mats, wrist strap stations, and ESD safe lab coats.
• Avoid handling circuit boards in carpeted areas.
• Try to handle the board by the edges, avoiding contact with components.

REVISION HISTORY

INTRODUCTION

Connect Tech’s M.2 GPS is a GNSS receiver based on the very small industry-standard M.2 Type-2242-S3B form factor. Using the USB bus, the M.2 GPS provides global positioning and time-stamp information, while taking up little space and power within a system. Also considering the existing support for Windows and Linux, the M.2 GPS can be easily integrated into any existing system, as well as easily implemented into new systems.

Product Features and Specifications

Part Numbers / Ordering Information

PRODUCT OVERVIEW

Block Diagram

Interface Pin-outs

M.2 Edge Connector
The M.2 GPS pin-out is compliant with the M.2 Socket 2 with B Key. This module uses only +3.3V for input power and all I/O is +3.3V signaling.

Function	M.2 Card Edge Connector
Location	P3
Pinout	Signal	Pin	Pin	Signal
	NC	1	2	+3.3V
	GND	3	4	+3.3V
	GND	5	6	NC
	USB_D+	7	8	W_DISABLE1#
	USB_D-	9	10	NC
	GND	11	12	Connector Key
	Connector Key	13	14	Connector Key
	Connector Key	15	16	Connector Key
	Connector Key	17	18	Connector Key
	Connector Key	19	20	NC
	CONFIG_O (GND)	21	22	NC
	NC	23	24	NC
	NC	25	26	NC
	GND	27	28	NC
	NC	29	30	NC
	NC	31	32	NC
	GND	33	34	NC
	NC	35	36	NC
	NC	37	38	NC
	GND	39	40	M.2 GNSS SCL
	NC	41	42	M.2 GNSS SDA
	NC	43	44	M.2 GNSS IRAQ
	GND	45	46	NC
	NC	47	48	NC
	NC	49	50	RESET#
	GND	51	52	NC
	NC	53	54	NC
	NC	55	56	NC
	GND	57	58	NC
	NC	59	60	NC
	NC	61	62	NC
	NC	63	64	NC
	NC	65	66	NC
	NC	67	68	NC
	CONFIG_1 (GND)	69	70	+3.3V
	GND	71	72	+3.3V

External I/O Connector

Function	External I/O Connector
Location	P2
Connector PN	501568-0507 – Manufacturer: Molex
Mating Connector PN	501330-0500 – Manufacturer: Molex CTI Cable #: CBG162
Pinout	Pin	Signal	Description
		EXT_INT / WHEELTICK	External Interrupt Input or Speed pulse input
	2	TIMEPULSE	Time pulse Output
	3	FWD	Forward/Reverse indicator
	4	GND	Digital Ground
	5	EXT_BAT	External Battery Input

The pinout for the I/O connector is outlined in the table below.

NOTE: WHEELTICK is only available on M2G205 and M2G206, otherwise this signal is EXT_INT
NOTE: FWD is only available on M2G205 and M2G206, otherwise it is not connected and should be left floating

Active Antenna Connector

Function	Active Antenna Connector
Location	J2
Connector PN	MM4829-2702RA4 – Manufacturer: Murata
Mating Connector PN	HSC – MHF4 Socket Standard CTI Cable #: CBG214

DETAILED FEATURE DESCRIPTION

USB

The M.2 GPS uses a USB 2.0 Full Speed (12Mb/s) interface as the primary communication bus. The USB interface is connected between the GPS receiver and the M.2 card edge connector (pins 7/9).

TIMEPULSE

The TIMEPULSE output is a buffered and ESD-protected signal from the GPS receiver. This signal connects to pin 2 of the External I/O Connector. It also drives the TIMEPULSE LED. By default, when satellites are not fixed this signal is High (3.3V). When satellites are fixed, this signal pulses at 1 pulse per second (1Hz) with a 20% duty cycle (200ms High, 800ms Low). For more information see the Receiver Description Including Protocol Specification document for your GPS receiver found in the Software Support section of this document.

W_DISABLE1#

The W_DISABLE# input from the M.2 card edge connector (pin 8) can be used to enable and disable power to the M.2 GPS module. When W_DISABLE1# is low, the module is disabled and no power is applied to the M.2 GPS. When W_DISABLE1# is High, the module is enabled and powered on. This signal is locally pulled up to 3.3V through a 100K ohm resistor.

External Interrupt Input/WHEELTICK

Input The external interrupt/WHEELTICK input is an ESD-protected input signal from the external I/O connector to the GPS receiver. On modules that do not support Automotive Dead Reckoning, this signal will always be an External Interrupt input, and this input can be used for control of the GPS receiver or for aid. On modules that support Automotive Dead Reckoning (M2G205/M2G206), this signal is by default used as the WHEELTICK input and is used to provide speed pulse information to the module. If the speed pulse information is available from the host processor, then the information can be provided using software messages in the UBX protocol. If using software messages to provide speed pulse information, this signal can be configured as an external interrupt input. See the Receiver Description Including the Protocol Specification document for your GPS receiver found in the Software Support section of this document. If this signal is not used, it should be left floating. Do not exceed 3.6V on this signal.

FWD

The forward/reverse signal is an ESD-protected input used on modules that support Automotive Dead Reckoning. This signal is used to indicate the moving direction of the module. An active high indicates moving forward and a low for moving backward. If the forward/reverse information is available from a host processor, then this information can be provided to the module using software messages in the UBX protocol. For more information see the Receiver Description Including Protocol Specification document for your GPS receiver found in the Software Support section of this document. On modules that do not support Automotive Dead Reckoning, this signal should be left floating. Do not exceed 3.6V on this signal.

External Battery

The external battery input in an ESD protected input from the External I/O Connector to the backup voltage supply of the GPS receiver. The purpose of a battery signal is to power internal memory for GPS almanac, ephemeris, and last position retention through power cycles. The voltage on this input signal should be greater than 2.0V and less than 3.6V. The supply of this signal should be able to provide at least 20uA continuous at room temperature, and 50uA at +85 degrees Celsius.

Local Battery and BAT_EN Header

There is a local battery supply on the M.2 GPS. The purpose of a battery signal is to power internal memory for GPS almanac, ephemeris, and last position retention through power cycles. The design includes an MS621 rechargeable battery that recharges itself when the unit is powered on. When power is removed from the unit the GPS receiver will typically consume 15uA on its battery supply input at room temperature and 24uA at 85 degrees Celsius.

On-Board Indicator LEDs

Software Support for the NEO-7 and NEO-M8 GPS Receivers

The USB drivers for the NEO-7 and NEO-M8 GPS Receivers can be found on the u-Blox website: https://www.u-blox.com/en/productresources?f[0]=property_file_product_filter%3A2668&f[1]=field_file_category%3A221
For configuration and setting options for the NEO-7 GPS receiver, please refer to the u-Blox 7 Receiver Description Including Protocol Specification V14 found on the u-Blox website: https://www.u-blox.com/en/product-resources?f[0]=field_file_category%3A209
For configuration and setting options for the NEO-M8N GPS receiver, please refer to the u-Blox M8 Receiver Description Including Protocol Specification found on the u-Blox website: https://www.u-blox.com/en/product-resources?f[0]=field_file_category%3A209
Changing the configuring of the NEO modules is best accomplished using the u-center application provided by u-Blox. To get the u-center application for windows, please see the link below: https://www.u-blox.com/en/product/u-center-windows

CABLES

CBG162 – External I/O Cable

CBG214 – Murata HSC to SMA Female Cable

Document: CTIM-000454
Revision: 0.01
Date: 2021-03-01

CONNECT TECH
www.connecttech.com
[email protected]
CONNECT TECH INC. 142 ARROW ROAD, GUELPH, ON N1K 1S6 CANADA I TEL: +1.519.836.1291 I TOLL: 800.426.8979

References

• Connect Tech Inc., Embedded Computing Experts
• Resource Center - Connect Tech Inc.
• Product resources | u-blox
• u-center | u-blox