41112627 AirPrime BX3100-BX3105 Hardware Integration Guide r3

FCC ID: N7NBX31A

Users Manual

Download: PDF

FCCID_4001999

Hardware Integration Guide

Important Due to the nature of wireless communications, transmission and reception of data can
Notice never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally
lost. Although significant delays or losses of data are rare when wireless devices such
as the Sierra Wireless modem are used in a normal manner with a well-constructed
network, the Sierra Wireless modem should not be used in situations where failure to
transmit or receive data could result in damage of any kind to the user or any other
party, including but not limited to personal injury, death, or loss of property. Sierra
Wireless accepts no responsibility for damages of any kind resulting from delays or
errors in data transmitted or received using the Sierra Wireless modem, or for failure
of the Sierra Wireless modem to transmit or receive such data.

Safety and Do not operate the Sierra Wireless modem in areas where blasting is in progress,
Hazards where explosive atmospheres may be present, near medical equipment, near life
support equipment, or any equipment which may be susceptible to any form of radio
interference. In such areas, the Sierra Wireless modem MUST BE IN AIRPLANE
MODE OR POWERED OFF. The Sierra Wireless modem can transmit signals that
could interfere with this equipment.
Do not operate the Sierra Wireless modem in any aircraft, whether the aircraft is on
the ground or in flight. In aircraft, the Sierra Wireless modem MUST BE IN
AIRPLANE MODE OR POWERED OFF. When operating, the Sierra Wireless modem
can transmit signals that could interfere with various onboard systems.

Note: Some airlines may permit the use of cellular phones while the aircraft is on the ground
and the door is open. Sierra Wireless modems may be used at this time.

The driver or operator of any vehicle should not operate the Sierra Wireless modem
while in control of a vehicle. Doing so will detract from the driver or operator's control
and operation of that vehicle. In some states and provinces, operating such
communications devices while in control of a vehicle is an offence.

Limitation of The information in this manual is subject to change without notice and does not
Liability represent a commitment on the part of Sierra Wireless. SIERRA WIRELESS AND ITS
AFFILIATES SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL DIRECT,
INDIRECT, SPECIAL, GENERAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR
EXEMPLARY DAMAGES INCLUDING, BUT NOT LIMITED TO, LOSS OF PROFITS
OR REVENUE OR ANTICIPATED PROFITS OR REVENUE ARISING OUT OF THE
USE OR INABILITY TO USE ANY SIERRA WIRELESS PRODUCT, EVEN IF
SIERRA WIRELESS AND/OR ITS AFFILIATES HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES OR THEY ARE FORESEEABLE OR FOR
CLAIMS BY ANY THIRD PARTY.
Notwithstanding the foregoing, in no event shall Sierra Wireless and/or its affiliates
aggregate liability arising under or in connection with the Sierra Wireless product,
regardless of the number of events, occurrences, or claims giving rise to liability, be in
excess of the price paid by the purchaser for the Sierra Wireless product.

Rev 3 Sep.18 2 41112607

Contents
1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.1 Module Variants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.2 General RF/Software Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.2.1 Wi-Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.2.2 Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.2.3 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.2.4 Configuration Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.3 General Hardware Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.3.1 Physical Dimensions and Connection Interface . . . . . . . . . . . . . . . . . . . . . . . .7

2: Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3: Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Power Supply Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4 RF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4.1 Generic Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.4.2 Wi-Fi Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4.3 Bluetooth Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.5 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.5.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4: Interfaces Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3 ADC/Voltage Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4 I2C Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4.4.1 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.5 I2S Interface (Digital Audio) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.6 General Purpose Input/Output (GPIO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

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Contents

4.7 Bootstrap Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.8 SPI Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.9 Secure Digital IO (SDIO) Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.10 Module Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.11 PWM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5: General Layout Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6: Regulatory Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.1 United States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2 Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

7: Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.1 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.2 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

8: References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.1 Web Site Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.2 Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

9: Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

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Introduction

1.2.3 Interfaces
The AirPrime BX310x provides the following interfaces and peripheral connectivity:
• Power supply—See Power Supply Ratings on page 11.
• RF—See RF on page 12.
• UART serial link—See UART on page 15.
• ADC/Voltage measurement—See ADC/Voltage Measurement on page 16.
• I2C—See I2C Interface on page 17.
• Digital audio (I2S)—See I2S Interface (Digital Audio) on page 18.
• GPIOs—See General Purpose Input/Output (GPIO) on page 18.
• SPI bus—See SPI Bus on page 20.
• SDIO—See Secure Digital IO (SDIO) Interface on page 21.
• Module enable—See Module Enable on page 22.
• PWM—See PWM on page 22.

1.2.4 Configuration Utility
The AirPrime BX310x includes a browser-based utility for device configuration. For
usage details, refer to [1] AirPrime BX310x AT Command Reference available at
source.sierrawireless.com.

1.3 General Hardware Features

1.3.1 Physical Dimensions and Connection
Interface
AirPrime BX310x modules are compact, robust, fully shielded and laser-marked
modules with the dimensions noted in Table 1-2.
Table 1-2: AirPrime BX310x Dimensions a
Nominal

Parameter BX3100 b BX3105 Tolerance Units

Length 11.5 13.5 ±0.10 mm

Width 9.5 11.5 ±0.10 mm

Thickness 2.4 2.4 ±0.20 mm

Weight 0.56 0.65 ±0.10 g

a. Dimensions are accurate as of the release date of this document.
b. BX3100 is a CF3 xSmall module, which belongs to the Common Flexible Form Factor (CF3)
family of WWAN modules

The AirPrime BX310x module is an LGA form factor device. All electrical and
mechanical connections are made through the 70 Land Grid Array (LGA) pads on the
bottom side of the PCB. (See Figure 7-1 on page 28 for details.)

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Hardware Integration Guide

The LGA pads have the following distribution:

Table 1-3: LGA Pad Types
Pad Type / Quantity Dimensions Pitch

Signal Pads 54 outer pads 0.75x0.35 mm 0.65 mm

Ground Pads 16 inner pads 1.0x1.0 mm 1.83 mm/1.48 mm

Rev 3 Sep.18 8 41112607

2
2: Functional Specifications
2.1 Features
Table 2-1 summarizes the AirPrime BX310x module’s RF (Wi-Fi and Bluetooth),
Power, software, and hardware capabilities.

Note: Table contents are preliminary and subject to change.

Table 2-1: AirPrime BX310x Capabilities
Feature Description

• Secure boot
• Secure update
Module • FOTA (Firmware update Over The Air)
• Sierra Wireless AirVantage support
• CF3-compliant footprint (BX3100)

• Protocols:
· 802.11 b/g/n/e/i
· 802.11 n (2.4 GHz), up to 150 Mbps; MCS0-7 in 20/40 MHz bandwidths
· Receiving STBC (Space-time Block Code) 2x1
· 802.11 e: QoS for wireless multimedia technology
· Additional 802.11i security features (pre-authentication, TSN, etc.)
· WMM-PS, UAPSD
· A-MPDU, A-MSDU aggregation
· Block ACK (RTS/CTS/ACK/BA)
· Fragmentation/defragmentation
· CCMP (CBC-MAC, counter model), TKIP (MIC, RC4), WAPI (SMS4), WEP
(RC4), CRC
· Frame encapsulation (802.11h/RFC 1042)
· Pre-authentication, TSN
Wi-Fi
• Supported channels—1–14
• Data transfer (HTTP, HTTPS, MQTT, TCP/UDP)
• Autoconnection—After device reset, automatically connects to available AP
based on previous configuration
• Infrastructure BSS Station mode/SoftAP mode: AP mode, STA mode,
concurrent AP/STA mode
• Up to 8a simultaneous Wi-Fi clients
• IP configuration—IP address in STA mode via DHCP or static assignment
• Authentication (security) modes: WPA, WPA2, WPA/WPA2, WPA2 Enterprise
• UMA-compliant and certified
• Open interface for various upper layer authentication schemes over EAP (e.g.
TLS, PEAP, LEAP, SIM, AKA, customer-specific)
• Adaptive rate fallback algorithm
• Automatic retransmission/response on slow hosts

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3
3: Technical Specifications
3.1 Environmental
The environmental specifications for operation and storage of the AirPrime BX310x
are defined in Table 3-1.

Table 3-1: Environmental Specifications
Parameter Range

Ambient Operating Temperature -40°C to +85°C

-40°C to +105°C
Ambient Storage Temperature
(Recommended)

3.2 Power Supply Ratings
DC power is supplied via the pins described in Table 3-2 on page 11.

Note: Operation above the maximum specified operating voltage (see Table 3-8 on page 14) is
not recommended, and specified typical performance or functional operation of the device is
neither implied nor guaranteed.

Table 3-2: Power Supply Pins
Pin Name Voltage Direction Function

Supply voltage reference for
33 VGPIO 3.3V Output
secondary I2C interface (pins 53/54)

50 VDD_3V3_RF 2.3–3.6V Input RF/Analog signal power supply

51 VDD_3V3_PA 2.3–3.6V Input Internal Power Amplifier power supply

52 VDD_PADS_BB 2.7–3.6V Input Baseband/Digital I/O power supply

3.3 Power Management
The AirPrime BX310x switches between several power modes to minimize current
consumption.
Light Sleep and Deep Sleep modes are enabled via AT commands from the host.
Refer to [1] AirPrime BX310x AT Command Reference for details.

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Hardware Integration Guide

Table 3-3 describes the AirPrime BX310x’s supported power modes.

Table 3-3: Power Modes — Descriptions
Wi-Fi / BT
radio / ULP co-
Power Mode CPU baseband RTC processor Notes

Active On On On On Fully functional

Radio offa On Off On On

Light sleepa Pause Off On On Wake up events will wake the module.
a
Deep sleep Off Off On On/Off Connection data stored in RTC memory

Only RTC timer or specific RTC GPIOs
Hibernatea Off Off Off Off
can wake the module.

a. Available in future firmware release.

3.4 RF

3.4.1 Generic Radio
Measurements conducted at 25C ambient temperature.

Table 3-4: Generic Radio Characteristics
Description Min Typ Max Unit

BX3100 RF Port Impedance 50 

Frequency Band 2.4 2.45 2.485 GHz

BX3105 Antenna Gain 0 dBi

3.4.2 Wi-Fi Radio
Measurements conducted at 25C ambient temperature.

Table 3-5: Generic Radio Characteristics
Description Min Typ Max Unit

Transmit 802.11b, CCK 1 Mbps, Conducted Tx Power, EVM and Mask Compliant 14 15.5 17 dBm

Transmit 802.11g, OFDM 6 Mbps, Conducted Tx Power, EVM and Mask Compliant 14a 15.5a 17a dBm

Transmit 802.11n, MCS0 HT20 6.5 Mbps, Conducted Tx Power, EVM and Mask Compliant 14b 15.5b 17b dBm

Transmit 802.11n, MCS0 HT40 13.5 Mbps, Conducted Tx Power, EVM and Mask Compliant 14c 15.5c 17c dBm

Conducted Receiver Sensitivity 11b DSSS, 1 Mbps -98 -95 -93 dBm

Conducted Receiver Sensitivity 11b CCK, 11 Mbps -90 -87 -84 dBm

Conducted Receiver Sensitivity 11g OFDM, 6 Mbps -94 -91 -88 dBm

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Technical Specifications

Table 3-5: Generic Radio Characteristics (Continued)
Description Min Typ Max Unit

Conducted Receiver Sensitivity 11g OFDM, 54 Mbps -73 -71.5 -70 dBm

Conducted Receiver Sensitivity 11n HT20 OFDM, 72.2 Mbps -73 -71 -69 dBm

Conducted Receiver Sensitivity 11n HT40 OFDM, 135 Mbps -73 -71 -69 dBm

Conducted Harmonics 2F0 - -42 -39 dBm

Conducted Harmonics 3F0 - -54 -51 dBm

a. Channel 1&11 power is automatically reduced for FCC 15.205 band edge compliance, reduction is 2 dB.
b. Channel 1&11 power is automatically reduced for FCC 15.205 band edge compliance, reduction is 2.5 dB.
c. Channel 1&11 typical power is automatically reduced for FCC 15.205 band edge compliance, reduction is 3 dB.

3.4.3 Bluetooth Radio
Measurements conducted at 25C ambient temperature.

Table 3-6: Generic Radio Characteristics
Description Min Typ Max Unit

Transmit Power BR 1 Mbps 7.5 9 10.5a dBm

Transmit Power EDR 2 Mbps 7.5 9 10.5 dBm

Transmit Power EDR 3 Mbps 7.5 9 10.5 dBm

Transmit Power LE 1 Mbps 2.5 4 5.5 dBm

Receiver Sensitivity BR 1 Mbps -89 -88 -87 dBm

Receiver Sensitivity EDR 2 Mbps -87 -86 -85 dBm

Receiver Sensitivity EDR 3 Mbps -81 -82.5 -84 dBm

Receiver Sensitivity LE 1 Mbps -92.5 -91 -89 dBm

Out-of-band blocking performance 30 MHz~2000 MHz - -10 - dBm

Out-of-band blocking performance 2000 MHz~2400 MHz - -27 - dBm

Out-of-band blocking performance 2500 MHz~3000 MHz - -27 - dBm

Out-of-band blocking performance 3000 MHz~12.5 GHz - -10 - dBm

a. Maximum Output power is restricted by compliance to FCC 15.205 band edge to 5.5 dBm Max.

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Hardware Integration Guide

3.5 Electrical Specifications

3.5.1 Absolute Maximum Ratings
Table 3-7: Absolute Maximum Ratings
Parameter Min Max Units

VIL Input low voltage -0.3 0.25VIO V

VIH Input high voltage 0.75VIO 3.6 V

IIL Input leakage current - 50 nA

VOL Output low voltage - 0.1VIO V

VOH Output high voltage 0.8VIO - V

Cpad Input pin capacitance - 2 pF

VIO VDD_PADS_BB 2.7 3.6 V

IMAX GPIO maximum drive capability - 12 mA

TSTR Storage temperature range -40 150 C

Table 3-8: Recommended Operating Conditions
Parameter Min Typ Max Units

VDD Supply voltage (VDD_3V3_PA, VDD_3V3_RF) 2.3 3.3 3.6 V

VIO I/O supply voltage (VDD_PADS_BB) 2.7 3.3 3.6 V

TOPR Operating temperature range -40 - 85 C

VIL CMOS low level input voltage 0 - 0.3VIO V

VIH CMOS high level input voltage 0.7VIO - VIO V

VTH CMOS threshold voltage - 0.5VIO - V

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4
4: Interfaces Specification
4.1 Overview
This section describes the interfaces supported by the AirPrime BX310x embedded
module and provides specific voltage, timing, and circuit recommendations for each
interface.

4.2 UART
The AirPrime BX310x provides one UART interface for asynchronous communication
between the AirPrime BX310x module and a host device (e.g. a PC or host
processor):
• UART0—4-wire, RS-232-compliant interface

Note: Up to two additional UART interfaces can be added by configuring GPIOs using AT
commands.

Flow control is managed using:
• RTS/CTS signals (This method is required for higher UART interface speeds.)
or
• Software XON/XOFF
Table 4-1 on page 15 describes the signals used for UART0.

Table 4-1: UART0 Pins a
Pin Interface Name Direction Function Voltage Level

2 UART0_RTS I Ready To Send, flow control

3 UART0_CTS O Clear To Send, flow control
UART0 VDD_PADS_BB
4 UART0_TXD I Transmit Data

5 UART0_RXD O Receive Data

a. If UART0 pins are not used, leave open.

Note: UART signals are named with respect to the HOST, and directions are listed with respect
to the module. For example, UART0_RXD is an output from the module to the host.

The UART interface is configurable via AT commands:
• Default configuration—115200 (baudrate), 8 bit, no parity, no handshaking
• Baudrate considerations:
· Maximum supported—5 Mbaud
· Maximum tested—3 Mbaud. This is the maximum baudrate supported by the
BX310x Dev Kit FTDI converter IC.
· HW handshaking is recommended above rates of 1 Mbaud and can be
enabled via AT command (AT&K3).

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Interfaces Specification

4.4 I2C Interface
The AirPrime BX310x module provides two I2C (Inter-Integrated Circuit) dedicated
serial ports (bus interface) based on [2] The I2C Bus Specification, Version 2.1,
January 2000 (Phillips Semiconductor document number 9398 393 40011).
The interfaces use the pins indicated in Table 4-4.

Table 4-4: I 2 C Interface Pins a
Pin Signal name Direction Function Voltage Level

9 I2C1_SCL I/O Primary I2C interface
VDD_PADS_BB
17 I2C1_SDA I/O Primary I2C interface

53 I2C2_SDA I/O Secondary I2C interface
VGPIO
54 I2C2_SCL I/O Secondary I2C interface

a. Leave open any pins that are not used.

This implementation of the I2C interface includes the following characteristics:
• Supported voltage:
· Primary I2C (3.3 V, configurable)
· Secondary I2C (3.3 V)
• Standard-mode interface—Data transfer rates up to 100 kbit/s
• Fast-mode interface—Data transfer rates up to 400 kbit/s)
• Master mode operation
• Addressing modes—7-bit; 10-bit; Dual addressing mode
External 2.2 k pull-up resistors must be applied to I2C signals (see Figure 4-1 on
page 17).
For I2C bus details, including I2C bus waveform and timing details, refer to the
I2C Bus Specification.

4.4.1 Application
VDD_PADS_BB
AirPrime BX310x Customer
Wi-Fi/BT Module Application

I2C1_SCL 2.2K 2.2K

I2C1_SDA

VGPIO

I2C2_SDA 2.2K 2.2K
I2C2_SCL

Figure 4-1: Example of I2C Bus Application

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Interfaces Specification

Table 4-7: GPIO Pins (Alternate function) a
Pin Signal Name Direction Default State Function Voltage Level

9 GPIO(23) No pullb

16 GPIO(0) Pull highc

17 GPIO(25) No pullb

18 GPIO(34) No pullb

19 GPIO(35) No pullb

24 GPIO(32) No pullb

25 GPIO(33) No pullb

26 GPIO(18) No pullb

27 GPIO(26) No pullb

31 GPIO(36) No pullb

32 GPIO(37) I/O No pullb General purpose I/O VDD_PADS_BB

34 GPIO(38) No pullb

36 GPIO(39) No pullb

42 GPIO(15) Pull highc d

43 GPIO(12) Pull lowe

44 GPIO(14) Pull highc

45 GPIO(13) Pull highc

46 GPIO(2) Pull lowe

47 GPIO(4) Pull lowe

53 GPIO(16) No pullb

54 GPIO(17) No pullb

a. Leave open any pins that are not used.
b. Internal configuration—no internal pull-ups
c. Pulled high internally
d. GPIO(15) default state (pull HIGH) enables UART boot messaging. To disable UART boot mes-
sages, drive GPIO(15) LOW prior to boot.
e. Pulled low internally

4.7 Bootstrap Pins
The GPIOs listed in Table 4-8 are used as Bootstrap pins during start-up.

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6
6: Regulatory Compliance
Caution: Unauthorized modifications or changes not expressly approved by Sierra Wireless
could void compliance with regulatory rules, and thereby your authority to use this equipment.

The BX3100/BX3105 module is designed to meet the requirements of the following
regulatory bodies and regulations, where applicable:
• Federal Communications Commission (FCC) of the United States
• Innovation, Science and Economic Development Canada (ISED)
• Ministry of Internal Affairs and Communications (MIC) of Japan
• Radio Equipment Directive of the European Union
• Ministry of Industry and Information Technology (People’s Republic of China)
• The National Communications Commission (NCC) of Taiwan, Republic of China
• The National Telecommunications Agency (ANATEL)
• National Radio Research Agency (South Korea)

Note: To determine whether specific approvals have been received or to obtain the anticipated
schedule for approvals, please contact your Sierra Wireless account representative.

Upon commercial release, the following industry certification will have been obtained,
where applicable:
• Bluetooth SIG
Additional certifications and details on specific country approvals may be obtained
upon customer request — contact your Sierra Wireless account representative for
details.
Additional testing and certification may be required for the end product with an
embedded BX3100/BX3105 module and are the responsibility of the OEM. Sierra
Wireless offers professional services-based assistance to OEMs with the testing and
certification process, if required.

6.1 United States
FCC ID: N7NBX31A The BX3100/BX3105 module has been certified by the Federal Communications
Commission under FCC ID: N7NBX31A. The BX3105 module is certified with an
on-board antenna, while the BX3100 module is certified with an external antenna.
Integrators may use the BX3100/BX3105 modules in their end products without
additional FCC certification if they meet the following conditions. Otherwise, additional
FCC approval must be obtained.
1. Only antennas of the same type and with equal or less gains as shown in
Table 6-1 may be used. Other types of antennas and/or higher gain antennas
may require additional authorization for operation.
2. The end product integrating the BX3100 module must use the RF trace design
approved with the BX3100 module. Details of the trace design can be obtained
from Sierra Wireless upon request.
3. At least 6 cm separation distance between the antenna and the user’s body, or
2.5 cm separation distance when the end product is designed or intended for use

Rev 3 Sep.18 24 41112607

Regulatory Compliance

on extremities, or mainly operated in extremity-only exposure conditions, i.e.,
hands, wrists, feet and ankles, must be maintained at all times.
4. The regulatory label on the end product must include the text “Contains FCC ID:
N7NBX31A” and the following compliance statement:
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two 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.
5. A user manual with the end product must clearly indicate the operating require-
ments and conditions that must be observed to ensure compliance with current
FCC RF exposure guidelines.
6. End users must not be provided with access to configuration options to change
technical parameters of the BX3100/BX3105 module, except as permitted by the
FCC rules.
The end product with an embedded BX3100/BX3105 module may also need to meet
the requirements in FCC Part 15 Subpart B for unintentional radiators and be properly
authorized.

Table 6-1: Antenna Specifications
Module Antenna Type Maximum Gain

BX3105 Integrated PIFA -1.65 dBi

Monopole 0 dBi
BX3100
Dipole 2.5 dBi @ 2.4 GHz

6.2 Canada
IC: 2417C-BX31A This radio transmitter IC: 2417C-BX31A has been approved by Innovation, Science
and Economic Development Canada to operate with the antenna types listed below,
with the maximum permissable gain indicated. Antenna types not included in this list
that have a gain greater than the maximum gain indicated for any type listed are
strictly prohibited for use with this device.
Integrators may use the BX3100/BX3105 modules in their end products without
additional ISED certification if they meet the following conditions. Otherwise,
additional ISED approval must be obtained.
1. Only antennas of the same type and with equal or less gains as shown in
Table 6-1 may be used. Other types of antennas and/or higher gain antennas
may require additional authorization for operation.
2. The end product integrating the BX3100 module must use the RF trace design
approved with the BX3100 module. Details of the trace design can be obtained
from Sierra Wireless upon request.
3. At least 4.5 cm separation distance between the antenna and the user’s body, or
3 cm separation distance when the end product is designed or intended for use
on extremities, or mainly operated in extremity-only exposure conditions, i.e.,
hands, wrists, feet and ankles, must be maintained at all times.

Rev 3 Sep.18 25 41112607

7
7: Pinout
The system interface of the AirPrime BX310x is through the LGA pattern on the
bottom of the PCB.
AirPrime BX310x pins are divided into three functional categories:
• Core functions and associated pins—Cover all the mandatory features for M2M
connectivity and will be available by default across all CF3 family of modules.
These Core functions are always available and always at the same physical pin
locations. A customer platform using only these functions and associated pins is
guaranteed to be forward and/or backward compatible with the next generation of
CF3 modules.
• Extension functions and associated pins—Bring additional capabilities to the
customer. Whenever an Extension function is available on a module, it is always
at the same pin location.
• Custom functions and associated pins—These are module-specific and make
use of specific chipset functions and I/Os.

Warning: Custom features should be used with caution as there is no guarantee that the
custom functions available on a given module will be available on other CF3 modules.

Pins marked as "Leave open" or "Reserved" should not be used or connected.

Rev 3 Sep.18 27 41112607

8
8: References
8.1 Web Site Support
Check http://source.sierrawireless.com for the latest documentation available for the
AirPrime BX310x.

8.2 Reference Documents
[1] AirPrime BX310x AT Command Reference
Reference number: 41111445
[2] The I2C Bus Specification, Version 2.1, January 2000 (Phillips Semiconductor
document number 9398 393 40011)

Rev 3 Sep.18 32 41112607

Document Created: 2018-09-11 14:55:19
Document Modified: 2018-09-11 14:55:19

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