5GHUB M.2 HAT User Manual

: June 6, 2024
: 5GHUB

M.2 ATTACHED ON TOP (HAT)
FOR RASPERRY PI
M.2 HAT Technical Specifications & User Manual

Purpose of the Document

The purpose of this document is to explain the technical specifications and manual for using the M.2 HAT for Raspberry PI .

Document History

Version	Author	Date	Description
A	5G HUB	04.02.2021	Initial Document

Package Content

M.2 HAT for Raspberry P Form Factor:

Raspberry PI HAT for M.2 form factor.

General Description

Overview

The Raspberry Pi (RP) model B+ can be used with add-on boards called HAT (Hardware Attached on Top). A HAT is an add-on board for RP model B+ that conforms to a specific set of rules that will make life easier for users and enable use of different M.2 form factor and hardware LTE Cat 6/Cat 8/Cat 12 chipsets (EM06, EM12) with raspberry PI.

The RP HAT is a rectangular board (65x56mm) that has four mounting holes in the (nicely rounded) corners that align with the mounting holes on the RP B+, has a 40W GPIO header and supports the special autoconfiguration system that allows automatic GPIO setup and driver setup. The automatic configuration is achieved using 2 dedicated pins (ID_SD and ID_SC) on the 40W B+ GPIO header that are reserved for an I2C EEPROM. The EEPROM holds the board manufacturer information, GPIO setup and a thing called a “device tree” fragment – basically a description of the attached hardware that allows Linux to automatically load the required drivers.

via the GPIO connector the HAT can supply a minimum of 1.3A continuously to the Pi.

Key Features

The HAT has following features:

Has M.2 interface can be used with LTE Cat 6/Cat 8/Cat 12 modules (EM06/EM12)
Fully compatible with Raspberry Pi models that have the 40-pin GPIO header (4, 3, 2, B+, A+, Zero)
Easy-to-use, simple setup, plug-and-play
QMI and PPP are supported
Clip-in M.2 socket compatible with worldwide LTE/UMTS/HSPA+ and GSM/GPRS/EDGE coverage with regional or global modules which work with different frequencies & carriers
With the 4G/LTE module (e.g Quectel EM06 and EM12) you can reach 600Mbps downlink and 150Mbps uplink data rates.
With 4G/LTE modules that supports Carrier Aggregation (CA)
Dual nano USIM card sockets can easily reachable on the upside and downside of the HAT and switching between the two SIM cards.
Can be used standalone with PC/Laptop over micro USB, without stacking with Raspberry Pi
The HAT can be powered from an external 5V source by exposed power pins, directly from Raspberry Pi 5V GPIO headers, via micro USB, or optional JST connector on the bottom of the board
HAT can provide adjustable 3.3V or 3. V to the M.2 socket.
M.2 socket and GPIO support I2C.
The power of the whole board electronics can be disabled for low-power consumption use cases
The modules (EM06, EM12) have built-in GNSS(GPS/GLONASS) receiver for geo-location applications
Uses a GPIO connector that spaces the HAT at least 8mm from the Pi (i.e. uses spacers 8mm or larger)
Conforms to the RP HAT requirements
Conforms to the HAT mechanical specification

Interfaces

M.2 interface
USB 2.0 with High Speed up to 480Mbps
Dual nano USIM card slot
40W GPIO to the raspberry PI

Software Features

The HAT does not need or has a driver. Rather The host computer (such as RPi) needs the driver of the compatible module that will be used with the HAT. For example, if you are using Quectel EM06/EM12 with the HAT, then your host device should have the driver for Quectel modules. Nowadays, most of the Linux kernel comes with the required drivers installed as a result the modules are recognized. The HAT is compatible with the following boards. Note that the HAT can be connected to these board via the USB.

Raspberry Pi 4, 3, 2, B+, A+, Zero
Asus Tinker Board
Rock 64*
Orange Pi*
Samsung ARTIK’s Eagleye board
Latte Panda

General Features

Temperature Range: -40°C ~ +80°C
Dimensions: 65 mm x 56 mm x 9 mm
Weight: Approx. 12g
Supply Voltage: 3.3V – 5V.

Key Applications

Environmental sensing and monitoring
Traffic monitoring
Video/Music Streaming
Large Data Downloads and Uploads
LTE Dongle/Router
Mobile Internet Hotspot
GPS Tracking
Security & Asset tracking
Smart city, smart building, smart transportation, and smart agriculture.
Smart Parking

Overview Diagrams

5GHUB M.2 HAT - Overview Figure 1. HAT Top View.
5GHUB M.2 HAT -Overview - Figure 2. HAT Bottom View.

M.2 HAT and GPIO Interface to RASPBERRY PI

5GHUB M.2 HAT -RASPBERRY Figure 3. M.2 HAT Top View. 5GHUB M.2 HAT -Bottom View Figure 4. M.2 HAT Bottom View.

M.2 HAT Pin Diagram and Assignment

The HAT has M.2 socket. The physical connections and signal levels of the M.2 socket complies with M.2 card electromechanical specification and has the following interfaces:

Power supply
Dual (U)SIM interface
USB interface
PCM and I2C interfaces
40 Pin GPIOs for Raspberry Interface

The M.2 socket accepts M.2 cards and has the following signals:

5GHUB M.2 HAT -Assignment

M.2 Pin Description

Table 1: PIN Assignments

Pin #

| Pin Name| Pin Direction| Pin Functionality
---|---|---|---

1

| NC| |

2

| VCC 3V3
–| 1| 3.0V-4.4V, typically 3.3V DC supply

3

| GND| |
4| VCC| I|

Mini card ground

5| GND| |

6

| FULL CARD POWER OFF#| I| VCC
7| USB DP| 10|

USB differential data (+)

8

10

|

USB differential data (-)

10

| WWAN_LED#| OD| LED signal for indicating the network status of the module
11| GND| |

12-19

10

| PCM clock signal

21

| NC| |

22

| PCM IN| 1| PCM data input
23| NC|

OD

|

24

| PCM OUT| 0| PCM data output
25| DPR|

DI

|

Dynamic power reduction.High level by default.

26

| NC| DI|

27

| GND| |
28| PCM_SYNC| 10|

PCM data frame synchronization signal

29

| NC| |

30

| USIM1 RESET| 10|

(U)SIM1 card reset

31| NC| |

32

| DO| (U)SIM1 card
clock|
33| GND| GND|

34

| USIM1 DATA| 10| (U)SIM1 card data

35

| NC| |
36| USIM1 VDD| PO|

Power supply for (U)SIM1 card

37

| NC| |

38

| NC| |
30| GND| |

40

| NC| |

41

| NC| |
42|

USIM2 DATA

|

10

|

(U)SIM2 card data

43

| NC| |

44

| USIM2 CLK| DO| (U)SIM2 card clock

45

| GND| |

46| USIM2 RESET| DO|

(U)SIM2 card reset

47| NC| |

48

| USIM2 VDD| PO| Power supply for (U)SIM2 card
---|---|---|---
49| NC| |

50

| NC| |

51

|

GND

| |
52|

NC

| |

53

| NC| |
54|

NC

| |

55

| NC| |
56|

I2C SDA

—

| 10|

12C serial data. Used for external codec

57

| GND| |
58| 12C SCL

—

|

DO

|

12C serial clock. Used for external codec

59

| NC| |

60

|

RESERVED

| |
61|

NC

| |
62|

RESERVED

| |

63

| NC| |
64|

RESERVED

| |

65

| NC| |

66

|

NC

| |
67|

RESET#

| DI| System reset. Active low.

68

| NC| |
69|

NC

| |

70

| VCC| |

71

| GND| |
72|

VCC

| |

73

| GND| |
74|

VCC

| |

75

|

NC

| |

Switching between Two SIM Card

The M.2 HAT has dual SIM card slots which provides great benefits to use two SIM cards fromdifferent mobile operator networks to connect to the cellular network. To switch or use one of the SIM card, use the following AT commands on the EM06 and EM12 modules.

Table 2: AT Command for Dual SIM operations (EM06 module). 5GHUB M.2 HAT - AT
Command for-table 2 5GHUB M.2 HAT - AT Command
for Table 3: AT Command for Dual SIM operations (EM12 module). 5GHUB M.2
HAT -Table 3