Telit Wireless Solutions WE866Cx M.2 User manual

M
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d
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WE866Cx M.2 Interface
Adapter
HW User Guide
1VV0301533 Rev. 3 –2022-03-10
Telit Technical Documentation

WE866Cx M.2 Interface Adapter Hardware User Guide
1VV0301533 Rev. 3 Page 2of 21 2022-03-10
Not Subject to NDA
APPLICABILITY TABLE
PRODUCTS
WE866C3
WE866C6

WE866Cx M.2 Interface Adapter Hardware User Guide
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CONTENTS
APPLICABILITY TABLE 2
CONTENTS 3
1. INTRODUCTION 5
Scope 5
Audience 5
Contact Information, Support 5
Symbol Conventions 6
Related Documents 6
2. GENERAL DESCRIPTION 7
Pairing Information Exchange 7
Mounting Example on MT IFBD (MTB) 7
Detailed Description 8
2.3.1. M.2 Specification 8
2.3.2. WE866Cx M.2 Card 9
3. M.2 CARD PINOUT 10
4. COMPONENT ASSEMBLY DIAGRAM 13
Assembly Diagram 13
5. SCHEMATICS 14
6. PRODUCT AND SAFETY INFORMATION 15
Copyrights and Other Notices 15
6.1.1. Copyrights 15
6.1.2. Computer Software Copyrights 15
Usage and Disclosure Restrictions 16
6.2.1. License Agreements 16
6.2.2. Copyrighted Materials 16
6.2.3. High Risk Materials 16
6.2.4. Trademarks 17
6.2.5. 3rd Party Rights 17
6.2.6. Waiver of Liability 17

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Safety Recommendations 18
7. GLOSSARY 19
8. DOCUMENT HISTORY 20

WE866Cx M.2 Interface Adapter Hardware User Guide
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1. INTRODUCTION
Scope
The scope of this document is to describe the M.2 interface board, which is the basic form
of the WE866Cx Development platform.
Audience
This document is intended for Telit customers, especially system integrators, about to
implement their applications using the Telit WE866Cx module.
Contact Information, Support
For general contact, technical support services, technical questions and report of
documentation errors contact Telit Technical Support at:
• TS[email protected]
• TS[email protected]
• TS[email protected]
• TS[email protected]
• TS[email protected]
Alternatively, use:
https://www.telit.com/contact-us
For detailed information about where you can buy the Telit modules or for
recommendations on accessories and components visit:
https://www.telit.com
Our aim is to make this guide as helpful as possible. Keep us informed of your comments
and suggestions for improvements.
Telit appreciates the user feedback on our information.

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Symbol Conventions
Danger: This information MUST be followed, or catastrophic
equipment failure or personal injury may occur.
Warning: Alerts the user on important steps about the module
integration.
Note/Tip: Provides advice and suggestions that may be useful when
integrating the module.
Electro-static Discharge: Notifies the user to take proper grounding
precautions before handling the product.
Table 1: Symbol Conventions
All dates are in ISO 8601 format, that is YYYY-MM-DD.
Related Documents
•WE866C3 Hardware Design Guide, 1VV0301495
•WE866C6 Hardware Design Guide, 1VV0301658
•Telit Evaluation Board Hardware User Guide, 1VV0301249
•LE910Cx Multi Technology Interface Board TLB Hardware User Guide,
1VV0301508
•LE910Cx AT Command Reference Guide, 80502ST10950A

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2. GENERAL DESCRIPTION
The M.2 Card provides the customer, the means to evaluate the WE866Cx Wi-Fi module
capability, and an interface with the LE910Cx.
It is designed to interface the Telit LE910Cx module family on an IFBD with the Telit
Generic Evaluation Board (EVB) and thus forming a complete Development Kit of
LE910Cx.
Pairing Information Exchange
Figure 1, shows the top view of the M.2 Card mounted with WE866Cx module.
Figure 1: M.2 Card Top View
The card has no components on the bottom side.
Mounting Example on MT IFBD (MTB)
Figure 2, shows the M.2 plugged into the MTB.

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Figure 2: M.2 Plugged into MTB
Detailed Description
This section provides details about the M.2 card, its connections and specifications.
2.3.1. M.2 Specification
The M.2, formerly known as the Next Generation Form Factor (NGFF), is a specification
from 2013 for internally mounted computer expansion cards and associated connectors.
The Specification details the buses that can be exposed through the M.2 connector. The
buses are PCI Express 3.0, Serial ATA (SATA) 3.0, and USB 3.0, which is backward
compatible with USB 2.0. As a result, M.2 modules can integrate multiple functions,
including the following device classes: Wi-Fi, Bluetooth, satellite navigation, near field
communication (NFC), digital radio, Wireless Gigabit Alliance (WiGig), wireless WAN
(WWAN), and solid-state drives (SSDs).
An M.2 module is installed into a mating connector provided by the host's circuit board,
and a single mounting screw secures the module into place. Components may be
mounted on either side of the module, with the actual module type limiting how thick the
components can be; the maximum allowable thickness of components is 1.5 mm per side.
Different host-side connectors are used for single and double-sided M.2 modules,
providing different amounts of space between the M.2 expansion card and the host's PCB.
The PCB of an M.2 module provides a 75-position edge connector. Depending on the type
of module, certain pin positions are removed to present one or more keying notches.

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2.3.2. WE866Cx M.2 Card
The WE866Cx M.2 card follows the below M.2 specification:
•SDIO based Socket 1
•2230 size type
•Key type E
This form-factor card specification is intended to support Wireless Connectivity devices
including combinations of Wi-Fi, BT, NFC, and/or GNSS.
The card includes a U.FL miniature RF connector for connecting a compatible Wi-Fi
antenna.

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3. M.2 CARD PINOUT
Table 2, describes the connector pin naming as well as the mapping and usage of each
signal of the M.2 WIFI card.
M.2 Connector
Pin Number
M.2 Pin Name
M.2 Spec Description
WE866Cx Usage
1
GND
GND
GND
3
USB_D+
USB2.0
NC
5
USB_D-
NC
7
GND
GND
GND
9
SDIO CLK
WIFI_SDIO_CLK
WIFI_SDIO_CLK
11
SDIO CMD
WIFI_SDIO_CMD
WIFI_SDIO_CMD
13
SDIO DATA0
WIFI_SDIO DATA0
WIFI_SDIO DATA0
15
SDIO DATA1
WIFI_SDIO DATA1
WIFI_SDIO DATA1
17
SDIO DATA2
WIFI_SDIO DATA2
WIFI_SDIO DATA2
19
SDIO DATA3
WIFI_SDIO DATA3
WIFI_SDIO DATA3
21
SDIO WAKE#
WIFI_WAKEUP
WOW (O)
23
SDIO RESET#
WIFI_RESET
WL_EN (I) & BT_EN (I)
25
ADD-IN CARD KEY E
27
29
31
33
GND
GND
GND
35
PERp0
PCIe_RX0_P
NC
37
PERn0
PCIe_RX0_N
NC
39
GND
GND
GND
41
PETp0
PCIe_TX0_P
NC
43
PETn0
PCIe_TX0_N
NC
45
GND
GND
GND
47
REFCLKp0
PCIe_CLK0_P
NC
49
REFCLKn0
PCIe_CLK0_N
NC
51
GND
GND
GND
53
CLKREQ0#
CLOCK REQUEST FROM
CARD
NC
55
PEWAKE0#
PCIe WAKE#
NC