Microchip Technology G2M5477 Wi-Fi Module User Manual G2C547 Data Sheet

Microchip Technology Inc. Wi-Fi Module G2C547 Data Sheet

UserManual.wiki >

Microchip Technology >

G2M5477 User Manual HTML Version

Users Manual

G2M5477

Preliminary Data Sheet

Document Version 0.14a

G2M5477 Preliminary Data Sheet

Disclaimer

While the information provided in this document is

believed to be accurate, it is under development and G2

Microsystems reserves the right to make changes without

further notice to the product described herein to improve

reliability, function, or design, and makes no guarantee or

warranty concerning the accuracy of said information, nor

shall it be responsible for any loss or damage of whatever

nature resulting from the use of, or reliance upon, such

information. G2 Microsystems makes no warranties of any

kind, whether express, implied or arising by custom or

course of trade or performance, and specifically disclaims

the implied warranties of title, non infringement, merchant-

ability, or of fitness for a particular purpose.

No part of this document may be copied, reproduced,

stored in a retrieval system, or transmitted, in any form or

by any means, electronic, mechanical, photographic, or

otherwise, or used as the basis for manufacture or sale of

any items without the prior written consent of G2 Micro-

systems.

Trademarks

G2 Microsystems and the G2 logo are trademarks of G2

Microsystems. Wi-Fi, WMM and Wi-Fi Alliance are regis-

tered trademarks of the Wi-Fi Alliance. G2 Microsystems

is a member of the Wi-Fi alliance. Other trademarks in this

document belong to their respective companies.

Document Number: DS-0008

Icon Version: 0.1.0

Release Date: February 2009.

Contacting us

Via email: info@g2microsystems.com

Via the web: www.g2microsystems.com

About this Data Sheet

This document is intended for:

zIcon developers planning to use a host processor

to communicate with the G2M5477 Icon software

over a serial interface.

zG2M5477 developers planning to develop custom

applications for the module.

This document provides preliminary information on the

G2M5477 Module from G2 Microsystems. Separate

documents should be read in conjunction with this data

sheet.

Icon developers should read the Icon Programmer's

Reference Manual [1] and the Icon API Reference, [2].

G2M5477 developers should read the G2C547

Programmer's Reference Manual [3], and G2C547 Appli-

cation Programming Interface Reference [4] documents.

See Chapter 13, References, for details of reference

documents.

Organization

This data sheet is organized into the following chapters:

zChapter 1, General Description – overview

zChapter 2, Features – features and benefits

zChapter 3, Block Diagram

system-level description

zChapter 4, Functional Description

zChapter 5, Interface, Connections and Mechanical

zChapter 6, Electrical Specifications – absolute

maximum ratings, operating conditions, power con-

sumption, and package thermal data

zChapter 7, RF Performance

zChapter 8, Firmware Features

zChapter 9, Application Information

zChapter 10, Qualification

zChapter 11, Design Guidelines

zChapter 12, Development Kit

zChapter 13, References

zChapter 15, Revision History and Glossary

document history, and acronyms, abbreviations,

and units of measure used in this data sheet

G2M5477 Preliminary Data Sheet

Contents

1 General Description ............................. 4

2 Features ................................................ 5

2.1 Benefits ................................................................5

3 Block Diagram ...................................... 6

3.1 Power ..................................................................7

3.2 System Power States ..........................................7

3.2.1 Asleep (low-power) ............................................................. 7

3.2.2 Awake ................................................................................. 7

3.2.3 Dozing ................................................................................. 7

3.2.4 Waking Up ........................................................................... 7

3.2.5 Force Awake ....................................................................... 7

3.3 Module Resets .....................................................7

3.3.1 Brownout Detection ............................................................. 8

3.3.2 EMC Resilience (IEC 61000-4-2) ........................................ 8

4 Functional Description ........................ 9

4.1 PMU and NVM .....................................................9

4.2 The CPU ..............................................................9

4.2.1 General Purpose I/O ........................................................... 9

4.3 Wi-Fi Network Interface .......................................9

4.3.1 Wi-Fi MAC/PHY ................................................................ 10

4.3.2 Cryptographic Accelerator ................................................. 10

4.3.3 2.4 GHz Radio ................................................................... 10

4.4 Sensor Interface ................................................10

4.5 Magnetic Receiver .............................................10

4.6 RFID (EPC) Transceiver ....................................10

4.7 Serial Interfaces .................................................11

4.7.1 User UART ........................................................................ 11

4.7.2 DMA UART ....................................................................... 11

4.7.3 SPI Master ........................................................................ 11

4.7.4 SDIO Client ....................................................................... 11

4.8 Power Supplies ..................................................11

4.8.1 3.3V Voltage Regulation ................................................... 11

4.8.2 Use with Supercapacitors ................................................. 12

5 Interface, Connections and Mechanical

5.1 Pin Types ...........................................................13

5.2 G2M5477 Module Pins ......................................13

5.3 Pin Grouping ......................................................15

5.4 Physical Dimensions ......................................... 17

6 Electrical Specifications .....................18

6.1 Absolute Maximum Ratings .............................. 18

6.2 Recommended Operating Conditions ............... 18

6.3 Package Thermal Specifications ....................... 18

6.4 Digital Pin Parameters ...................................... 19

6.5 Control Signal Parameters ................................ 19

6.6 Power Consumption .......................................... 19

6.6.1 Asleep ............................................................................... 19

6.6.2 Awake ............................................................................... 20

6.6.3 Wakeup Timing and Energy Considerations ..................... 20

6.7 Sensor Interface ................................................ 20

6.8 External Power Supplies ................................... 20

7 RF Performance ..................................21

7.1 2.4 GHz Radio ................................................... 21

7.1.1 2.4 GHz Synthesizer .......................................................... 21

7.1.2 Wi-Fi Receiver ................................................................... 21

7.1.3 Wi-Fi Transmitter ............................................................... 21

8 Firmware Features ..............................22

9 Application Information ......................23

10 Qualification ........................................24

11 Design Guidelines ...............................25

12 Development Kit ..................................26

13 References ...........................................27

13.1 Icon Developers ................................................ 27

13.2 G2M5477 Developers ....................................... 27

13.3 MDK Users ........................................................ 27

13.4 Standards and Excellence ................................ 27

14 Compliance ..........................................29

14.1 FCC Compliance ............................................... 29

14.1.1 Troubleshooting ................................................................ 29

14.1.2 Conditions ......................................................................... 29

14.1.3 Markings ............................................................................ 29

14.1.4 FCC Warning .................................................................... 29

15 Revision History and Glossary ..........30

General Description

G2M5477 Preliminary Data Sheet

1 General Description

The G2M5477 is a complete Wi-Fi and networking

solution incorporating an RF power amplifier and antenna,

a 32-bit CPU, operating system, TCP/IP network stack,

crypto accelerator, power management subsystem, real-

time clock and versatile sensor interface. The module

enables designers to rapidly embed Wi-Fi and networking

functionality into virtually any device. It is compatible with

standard pick-and-place equipment.

Ultra-low power usage and flexible power management

maximize lifetime in battery-operated devices. A wide

operating temperature range allows use in indoor and

outdoor environments.

G2M5477 developers have access to feature-rich analog

and digital interfaces that allow for straightforward

connection of environmental sensors and external control.

The G2M5477 is suitable for applications in areas such as:

zReal Time Locating Systems (RTLS)

zWireless Audio

zIndustrial and Home Automation

zHealth and Fitness Monitoring

zTel e me try

zSecurity

As the module is capable of independently maintaining a

low-power wireless network connection, the G2M5477 is

suitable for Wi-Fi enabled remote controls, headphones,

portable Internet radios, toys and other battery-operated

devices. Even in mains-powered devices, the G2M5477

provides cost and time-to-market benefits as a self-

contained Internet-enabling solution. It can communicate

data over any existing Wi-Fi infrastructure using industry

standard protocols. The G2M5477 has an operating

temperature range from -30°C to +85°C.

The G2M5477 comes pre-programmed with Icon, a full-

featured application that provides a host microcontroller

with access to Wi-Fi and networking functionality via a

serial communication interface. G2 provides the complete

source for a host driver. With a few simple API calls to the

driver, a host microcontroller can use the module to

connect to a Wi-Fi network and communicate data via

standard internet protocols.

Alternatively, G2M5477 developers can build applications

using the G2C547 API, which provides lower level access

to the RFID and sensor capabilities of the module.

At the core of the module is the G2C547 SoC, which

includes a SPARC V8 processor, and on-board ROM

containing the eCos operating system, LWIP TCP/IP

protocol suite, security software and hardware drivers.

The module includes 8Mbits of flash memory. On reset,

the G2C547 loads an application from flash memory into

on-board RAM and executes the program. G2M5477

developers are provided with at least 64Kbytes of RAM for

application code and supporting data structures.

The host to module UART interface runs at 115200 bps by

default. Ten GPIO ports provide general purpose digital

input and output. The GPIO ports can be driven by the

CPU or mapped for other purposes. Eight sensor pins

provide analog input and output, allowing the connection

of external sensors and outputs from internal sources

such as the auxiliary DAC.

The module provides an internal Wi-Fi antenna and

provides a U.FL connection for an external antenna.

When in low-power sleep mode the module minimizes

battery usage, but is still able to respond to certain events,

including internal timers and events on the sensor and

RFID interfaces. Applications that make efficient use of

the sleep state can extend battery life to multiple years.

When awake, the module can run multi-threaded eCos

applications and exchange data via the Wi-Fi interface.

The G2M5477 can interface to an inexpensive 8- or 16-bit

microprocessor, reducing the system cost of applications

with moderate processing requirements.

The G2M5477 is ideal for the vast range of applications

that require long battery life, moderate processing power,

moderate data throughput and occasional Wi-Fi connec-

tivity.

The G2M5477 is certifiable for FCC modular approval for

use in the Unites States, and CE approval for use in

Europe and other countries (certification expected by

February 2009).

The G2M5477 module has been designed to provide

designers with a simple Wi-Fi solution: ease of integration

and programming, vastly reduced development time,

minimum system cost, long battery life and maximum

value in a range of applications.

Features

G2M5477 Preliminary Data Sheet

2 Features

Wi-Fi

• Complete 2.4 GHz IEEE 802.11b/g Wi-Fi transceiver

• 802.11i security suite with WEP-40, WEP-104, WPAv1-PSK,

WPA2-PSK, and WPA transitional modes

• High throughput - 4 Mbit/s sustained TCP/IP with WPA2

• Wi-Fi certifiable with support for WPA2 Enterprise, WMM QoS

and WMM Power Save

CPU

• User-programmable 32-bit SPARC V8 clocked at 44 MHz

• On-board ROM contains eCos operating system, LWIP

TCP/IP suite, security software and drivers

Interfaces

• Up to 10 general-purpose I/Os (GPIOs)

• SPI master, SDIO client (with SD-SPI slave mode), and UART

interfaces

EMC Resilient

• IEC-61000-4-2: unattended recovery from EMC shocks in

hostile electromagnetic environments

RFID (EPC) and RTLS

• EPCglobal Class 1 Generation-2 transceiver, with both read

and write capability

• ISO 24730-2 compliant 2.4GHz DSSS transmitter and FSK

magnetic receiver

Protocols

• Supports Cisco CCX-tag protocols

• Supports Internet protocols including UDP, TCP and HTTP via

the included LWIP stack

Sensor Interface

• 14-bit ADC offering 35us conversion time with 0.01% linearity

for analog transducers such as temperature and humidity

sensors

• Auxiliary 8-bit DAC

• Low-power interface for monitoring push-buttons, accelerom-

eters, security seals and motion sensors

Power Usage and Management

• Ultra-low-power sleep state, in which a range of wake reasons

can be detected

• Keep alive doze state with instant transition to wake state

• On-board power regulators operate from alkaline, lithium

manganese, lithium iron disulphide and other battery types

• Transitions from asleep to CPU-active in 1.7ms; CPU active to

network connection in less than 35ms (typ)

• Consumes 4uA current when asleep, 90mW power with Wi-Fi

enabled

Physical

• Operates from -30°C to +85°C

• Available in trays suitable for standard pick-and-place

machines

• Physical dimensions: 20mm x 37mm x 3.7 mm

Software

• Includes Icon software providing a serial-API UART interface

to a wide range of functions, including secure Wi-Fi authenti-

cation and network operations such as DHCP, DNS, UDP and

TCP/IP.

2.1 Benefits

• Multi-year battery life

• Industry-leading Wi-Fi power consumption

• Design is complete, avoiding RF design and layout issues

• Ships pre-calibrated and pre-tested, avoiding expensive NRE

for calibration and production test procedures

• Uses existing Wi-Fi and EPC RFID infrastructure for low TCO

• Hosted architecture - For G2M5477 developers, a full network

stack on-board enables development of a low system-cost

wireless internet product

• Supports a client architecture with an external 8- or 16-bit host

microcontroller for shortest development time and lowest

system cost

• Pre-loaded with Icon software offering simple Wi-Fi connec-

tivity

Block Diagram

G2M5477 Preliminary Data Sheet

3 Block Diagram

Figure 3-1: G2M5477 Architecture

The core of the G2M5477 module is the G2C547 chip,

designed with three separate power domains to provide

lower power consumption and flexible power

management. A single battery, via on-board voltage

regulation, supplies power to the three parts of the chip as

shown in Figure 3-1:

1. The Always On (“AO”) domain is continuously

powered, and provides a small number of essential

functions which are always available.

2. The 1.3V domain is powered as required from a buck

regulator, and provides the core functionality of the

G2M5477.

3. The 3.3V domain is powered as required, from a boost

regulator or directly from the battery, and supplies the

I/O pins, supply outputs and the 2.4GHz power

amplifier.

When only the AO is powered, the module is asleep.

When the 1.3V domain is also powered, the module is

awake. The 3.3V domain is enabled only when the module

is awake.

For more details of the chip architecture, see the G2C547

Datasheet, [5].

2.4GHz Tx

(802.11)

Sensors: optional

external

components for

motion detection,

temperature

measurement,

magnetic receiver,

etc.

Flash

memory

1.3V Domain

CPU

RAM

Crypto

accelerator

ROM

AO Domain 3.3V Domain

Crystal Oscillator 1.3V Power Supply 3.3V Power

Supply

40 MHz Oscillator

2.4 GHz Radio 2.4 GHz

PMU

G2C547

ISO 24730-2

2KB NVM

2.4GHz Rx (802.11)

ADC

Mag Rx

Timers

32.768 kHz Xtal 40 MHz Xtal

Battery

GPIO

I/O

EPC/RFID

Sensor

Interface

SDIO

SPI

G2M5477

GPIO

inc

User

UART

3V3 Boost

Enable

On-board

antenna

Optional external antenna

through U.FL connector

3V3 Boost

Regulator

1V3 Buck

Regulator

Sensor

power

DMA_

UART_TX

DMA_

UART_RX

SPI-

master

interface

802.11b/g

MAC/PHY

Block Diagram

G2M5477 Preliminary Data Sheet

3.1 Power

The G2M5477 can be powered by an external regulator or

a range of batteries. The module includes a 3.3V Boost

Regulator, for use with batteries that supply a voltage

lower than 3.0V.

3.2 System Power States

The G2M5477 operates in one of two main power states:

asleep, in which the module has limited functionality

(enough to detect wake events) but very low battery drain,

and awake, in which all of the functionality of the module

is available (in particular the operating system, eCos, is

running) and battery drain is higher. Additionally, while

awake the CPU can put itself into a doze state, where the

1.3V domain stays up, but the CPU clock is suspended

(until a wake event happens).

3.2.1 Asleep (low-power)

When asleep, only the AO domain is powered, and the

PMU controls operation. This is the low-power state of the

G2M5477, in which it draws only microwatts of power. The

CPU and all other components of the 1.3V domain are

unavailable (and do not maintain their internal state).

Within the AO domain, the RFID and Magnetic receivers

can be enabled as required, at the expense of increased

power consumption.

The functions available when asleep are simple - mostly

detecting reasons to wake the CPU:

zdecrement timers and detect expiry

zdetect state change of the switch sensors

zmonitor the sampled comparator and detect when

external parameters pass preset thresholds

zdetect motion via the motion sensor

zreceive and act on magnetic receiver data

zreceive and act on RFID reader commands

zrespond to assertion of the FORCE_AWAKE pin

zrespond to battery brownout (low voltage)

zrespond to IEC-61000-4-2 EMC events

3.2.2 Awake

When awake, the 1.3V domain is powered (as well as the

AO domain), and the 40 MHz oscillator runs. On waking,

the module boots the eCos operating system from ROM,

after which the CPU loads and executes a user application

from Flash memory. At this point all functionality of the

module is available, in addition to that available when

asleep. The module can:

zLoad and execute programs from flash memory

zUse the Wi-Fi radio

zRead and write flash memory

zRead and write NVM

zEncrypt and decrypt data

zGo to sleep

zTransmit ISO 24730-2 data (DSSS and FSK/OOK)

zTake measurements using the sensor interface

zUse the GPIO, SPI, SDIO, and UART interfaces

zConfigure PMU: RFID, mag receiver, sensors, etc.

3.2.3 Dozing

When awake, the module may doze - in which the 1.3V

domain remains powered but the CPU is not clocked. The

module uses less power in this state than when awake,

and can respond very quickly to interrupt sources (the

module wakes from doze in 45ns, compared to milli-

seconds to wake from sleep). All memory and register

contents are preserved while the module is dozing.

Section 6.6, Power Consumption shows the power used

by the module in each of these states.

3.2.4 Waking Up

A wake event received when the module is asleep wakes

the module. When a wake event occurs, the CPU boots

the eCos operating system from ROM, loads an appli-

cation from flash memory and executes it.

3.2.5 Force Awake

For debugging and development, the G2M5477 may be

‘forced awake’ by asserting the FORCE_AWAKE pin for at

least 245us. This generates a non-maskable wake-event.

While the FORCE_AWAKE pin remains asserted the

module is prevented from sleeping or dozing.

3.3 Module Resets

The G2M5477 is reset by any of the following events:

• An internal power-on reset, generated automatically when

power is supplied. This is intended for initializing the module

when a new battery is connected;

• An external power-on reset, generated by pulling the

RESET_L pin low;

Block Diagram

G2M5477 Preliminary Data Sheet

• A software power-on reset, generated from software; or

• A reset triggered by a critical event, which can be:

— a brownout, generated if the supply voltage drops below the

minimum operating voltage; or

— an IEC-61000 EMC consistency failure.

3.3.1 Brownout Detection

The G2M5477 includes a brownout detector to hold the

module in reset if the battery voltage falls below the

minimum operating voltage.

When the G2M5477 wakes from a brownout-induced

shutdown, the cause of the shutdown is indicated to the

CPU. The application can then select the appropriate

response.

3.3.2 EMC Resilience (IEC 61000-4-2)

The G2M5477 protects a number of critical internal config-

uration registers with logic to detect corruption from an

EMC event. If such an internal inconsistency is detected,

a non-maskable critical event resets the module.

Functional Description

G2M5477 Preliminary Data Sheet

4 Functional Description

The subsystems of the G2M5477 are:

• The Power Management Unit (PMU), which controls the

module when asleep and aggregates all interrupts and wake

reasons to the CPU whether awake or asleep. The NVM

provides always-on memory that is accessible by both the

PMU and (when awake) the CPU.

• The CPU, which executes the operating system and user

applications, from which the rest of the module is configured

and controlled, including the PMU.

• The Wi-Fi interface, including the ISO 24730-2 transmitter

• The cryptographic accelerator

• The ISO 24730-2 magnetic receiver

• The RFID transceiver

• The sensor interface

• The digital interfaces - SPI, SDIO client, User and DMA UART

• Oscillators and power supplies

• IEC-61000-4-2 EMC recovery, and brownout detector

4.1 PMU and NVM

The PMU manages the oscillators and power supplies,

controls the G2M5477 when asleep, and aggregates all

interrupts to the CPU whether awake or asleep. When

asleep, the interrupts collected by the PMU also act as

potential wake events - waking the module from sleep.

The PMU monitors wake events from the AO timers, the

sensor interface, RFID and the ISO 24730-2 magnetic

receiver. Current loop sensors can be used to wake on

voltage changes on SDIO or User UART lines. Although

the PMU controls the G2M5477 while asleep, and

manages the power state transitions between asleep,

awake, and doze, its configuration comes from the CPU.

The term NVM is used in this context to refer to memory in

the Always On domain. Memory contents are lost when

power is disconnected.

An NVM backup is maintained in flash memory and loaded

automatically on power-up.

4.2 The CPU

The CPU is a SPARC V8 32-bit design, clocked at 44 MHz.

On waking, the CPU boots the eCos operating system

from ROM. The boot code then loads an application from

external flash memory into RAM and executes it.

Developers writing applications for the module are

provided with the ability to debug applications, program

the flash, and control the module with the DMA UART. The

DMA UART connects to the G2C547 Debug UART. See

the G2C547 PRM, [3], for further details on the G2C547

Debug UART.

4.2.1 General Purpose I/O

The module has ten GPIO pins, each of which can be

driven by the CPU, or from a secondary function such as

the SDIO client or User UART. Pins GPIO_10 and

GPIO_11 are used for the User UART, as indicated in

Table 5-2. Up to four GPIO pins can be configured as

edge or level-sensitive interrupt sources. These are active

only when the CPU is awake.

As of release 0.0.1 of the Icon software, only GPIO_10

and GPIO_11 are available for use as a User UART

interface. Future versions of Icon will provide general read

and write access to GPIO pins.

G2M5477 developers have unlimited access to GPIO

functionality.

4.3 Wi-Fi Network Interface

The Wi-Fi Network Interface provides all functions

necessary to connect to, and communicate with, a

standard 802.11b/g Wi-Fi network. The Wi-Fi interface

consists of:

• A firmware API in ROM that includes functions for channel

scan, connection, communications, and PHY layer

management.

• An 802.11b/g MAC and baseband PHY.

• A 2.4GHz radio transceiver.

• A cryptographic accelerator to assist with Wi-Fi security.

• An ISO-24730-2 2.4GHz transmitter. Although not part of Wi-

Fi, the ISO-24730-2 transmitter shares the Wi-Fi 2.4GHz

Transmit radio path.

Icon developers have access to the Wi-Fi Network

Interface via a high-level API that issues commands over

the serial interface. Example API functions include

g2_start_scan, g2_set_ssid, g2_conn_connect,

g2_conn_send, g2_conn_receive, etc. Refer to the Icon

Programmer's Reference Manual, [1], for further infor-

mation.

G2M5477 developers have access to lower level functions

in the G2C547 ROM via a firmware API. Refer to the

G2C547 PRM, [3], for further details.

Functional Description

G2M5477 Preliminary Data Sheet

4.3.1 Wi-Fi MAC/PHY

The G2M5477 Wi-Fi MAC/PHY plus API provides a

complete solution for Wi-Fi compliant 802.11b/g

operation. It supports DCF and peer-to-peer operation,

with a wide range of security suites - including WEP, TKIP,

WPA1, and WPA2-PSK. See the G2C547 Programmer’s

Reference Manual, [3], for details of the Wi-Fi API.

4.3.2 Cryptographic Accelerator

The cryptographic subsystem provides hardware acceler-

ation for AES-128, RC4, MD5, SHA-1, CRC-32, and TKIP

‘Michael’.

The AES-128 block provides 128-bit AES encryption in

Electronic Code Book (ECB), Counter, and Cipher-Block

Chaining (CBC) modes. All other common AES modes

can be created using ECB mode.

For further information on the use of the cryptographic

accelerator, see the G2C547 Programmer’s Reference

Manual, [3].

4.3.3 2.4 GHz Radio

A 2.4 GHz radio transceiver that includes a 2.4 GHz

synthesizer is used for Wi-Fi and ISO 24730-2 operation.

The reference for the synthesizer is the on-board 40 MHz

crystal.

4.4 Sensor Interface

The sensor interface provides:

zfour switch sensors

za motion sensor for use with external ball-in-tube

za pulsed comparator

zan auxiliary DAC

zan ADC - the Sampled Measurement Unit (SMU)

za current generator, for measurement purposes

The switch sensors, motion sensor, and pulsed

comparator are all in the AO domain, and available when

awake or asleep; the SMU ADC is in the 1.3V domain and

available only when awake. The sensor elements share

the eight sensor interface pins.

When asleep, the sensor interface can be used to detect

events such as a switch opening or closing, motion, or an

analog voltage moving outside a preset window. When

awake, the SMU can digitize analog signals (e.g. audio)

and make high-precision analog measurements.

As of release 0.0.1, Icon support for the sensor interface

is limited to using SENSOR_0 to generate a wake-on-

serial event to wake the module from low-power sleep

mode. To enable this functionality, a resistive-divider

should be externally connected as shown below.

Figure 4-1: SENSOR_0 resistive divider

G2M5477 developers are provided with access via API

calls to the entire sensor interface functionality.

4.5 Magnetic Receiver

The magnetic receiver receives and decodes ISO-24730-

2-encoded data. It supports up to three axes, automati-

cally searching for an axis that provides valid data.

The receiver can be configured to wake the module in a

variety of different ways. These options simplify software

design and reduce power consumption to extend battery

life.

To use the magnetic receiver, G2M5477 developers must

purchase a software development kit from G2 Micro-

systems.

4.6 RFID (EPC) Transceiver

The AO domain contains an EPCglobal Generation-2

Class-1 RFID transceiver. This transceiver can receive

and decode the full set of EPC Generation 2 Class 1

mandatory commands, in North American, European and

Asian radio frequency bands (860-960MHz). The RFID

interface can be used to read from and write to NVM. It

supports one or two external antennas.

To use the RFID EPC transceiver, G2M5477 developers

must purchase a software development kit from G2 Micro-

systems.

USER_UART_RX

10k

22k

SENSOR_0

Functional Description

G2M5477 Preliminary Data Sheet

4.7 Serial Interfaces

The G2M5477 has four serial interfaces:

• A standard User UART.

• A high-speed DMA UART (also referred to as the Debug

UART in G2C547 documentation)

• A SPI master

• An SDIO client including a SPI-slave

4.7.1 User UART

The User UART interface can support 2 and 4-line UART

protocols. The G2M5477 logic levels do not match those

of the RS232 standard, so external-level translators are

required to meet the RS-232 UART standard. Hardware

support is included for RTS, CTS, SRX, and STX

functions.

The UART interface supports baud rates of 2400, 4800,

9600, 19200, 38400, 115200 & 230400 bit/s.

A note for developers interfacing with Icon: the User UART

is the only serial interface supported by Icon version 0.1.0.

The Icon-supported configuration for the UART is 2-wire

115200 bit/s, 8-N-1. Refer to the Icon Programmer's

Reference Manual, [1], for further information.

4.7.2 DMA UART

The DMA_UART_TX and DMA_UART_RX pins provide a

high-speed DMA UART interface to the G2M5477 and a

debug interface to the G2C547 CPU.

The high-speed DMA UART interface will be available for

use in a future release of the Icon software.

G2M5477 developers typically do not connect the DMA

UART Interface in the final product. Rather, this interface

is the primary debug interface during development. The

DMA UART interface is described in greater detail in the

G2C547 Programmer’s Reference Manual, [3], where it is

referred to as the CPU Debug interface.

4.7.3 SPI Master

The SPI master interface is used principally to access on

board flash memory. It can also be used to drive additional

SPI devices. The dedicated SPI chip-select output is

connected only to the on-board flash memory and is

controlled directly from hardware. A secondary hardware

controlled SPI chip select output can be mapped to any

one of the module GPIO pins. Further SPI devices can be

supported by using GPIO pins as chip-selects under

software control.

The SPI interface features:

• Full-duplex synchronous serial data transfer

• Variable length of transfer word up to 128 bits

• MSB first data transfer

• Rx and Tx on rising or falling edge of serial clock indepen-

dently

• SPI clock speed configurable from 86kHz to 44MHz

Note that the 3.3V supply powers the SPI I/O pins. The

cautions in Section 6.1 regarding external drive to the

GPIO pins apply to the SPI pins.

To use the SPI master interface to control external SPI-

slave devices, G2M5477 developers must purchase a

software development kit from G2 Microsystems.

4.7.4 SDIO Client

An SDIO client interface supporting SD-SPI, SD-1 and

SD-4 modes provides a high speed data interface to the

G2M5477, operating at up to 100Mbit/s. The SDIO client

supports a single function - “Function 1” - a memory

interface. The interface is overlaid on GPIO-4 through

GPIO-9. A FIFO provides buffering between an external

device and G2M5477 system RAM.

To use the SDIO interface to communicate with an

external microprocessor, G2M5477 developers must

purchase a software development kit from G2 Micro-

systems.

4.8 Power Supplies

The G2M5477 is designed to operate from a wide range

of batteries including alkaline, lithium manganese dioxide,

lithium-thionyl chloride, nickel-metal hydride, nickel-

cadmium and lithium iron disulphide (Energizer Lithium

AA-size 1.5V: http://data.energizer.com/PDFs/l91.pdf).

The AO domain is powered continuously by on-board

linear regulation of the battery voltage, which must remain

in the range 2.0 V to 3.7 V.

4.8.1 3.3V Voltage Regulation

The 3.3V voltage regulation topology depends on the

battery chemistry and arrangement used to power the

G2M5477. A battery that provides less than 3.0 V over its

lifetime requires the module boost regulator to be enabled

by shorting the 3V3_REG_CTRL_IN and

3V3_REG_CTRL_OUT pins, as shown in the circuit of

Figure 4-2.

Warning: The boost regulator must not be operated

above 3.3 V. Figure 4-2 is not suitable for a battery with

output voltage greater than 3.3 V

Functional Description

G2M5477 Preliminary Data Sheet

A battery that supplies a voltage greater than 3.0V over its

lifetime can drive the module directly, as in Figure 4-3.

Figure 4-2: Power Supply for Battery 2.0 V to 3.3 V

Figure 4-3: Power Supply for Battery 3.0 V to 3.7 V

4.8.2 Use with Supercapacitors

The G2M5477 can be powered by a lithium coin cell. Coin

cells are unable to provide the high currents required

when the module is awake, so a suitable supercapacitor

must be used to provide these currents. Some superca-

pacitors use two lower-voltage supercapacitors in series.

The G2M5477 provides a SUPERCAP_BALANCE pin to

share the balance across these capacitors. This pin

divides the supply voltage to avoid damaging stresses to

the supercapacitor. The pin consumes a lower quiescent

current than would be consumed by a pair of resistors.

The Icon software imposes a power requirement that

cannot be met by a lithium coin cell and supercapacitor.

To use a lithium coin cell and supercapacitor power

supply, G2M5477 developers must purchase a software

development kit from G2 Microsystems and develop a

custom application that does not exceed the power limita-

tions of the supply.

SL12

Schottky 20 uF

1 uH

3V3_REG_CTRL_IN (18)

VDD_BATT (20)

VDD_3V3_IN (21)

Siliconix

Si2312DS

Battery

2.0 to 3.3V

3V3_REG_CTRL_OUT (17)

Short to

enable Boost

Regulator

Inside

G2M5477

Module

Outside

G2M5477

Module

Boost Regulator

3V3_REG_CTRL_OUT (17)

VDD_BATT (20)

VDD_3V3_IN (21)

Battery

3.0 to 3.7V

Inside

G2M5477

Module

Outside

G2M5477

Module

3V3_REG_CTRL_IN (18)

Interface, Connections and Mechanical

G2M5477 Preliminary Data Sheet

5 Interface, Connections and Mechanical

The following sections discuss pin groupings, pin types, and pin descriptions. Connections with G2C547 pins are

provided for G2M5477 developers only.

5.1 Pin Types

Table 5-1 introduces the types of pins of the G2M5477.

There are several kinds of pins:

• The pins of the general-purpose inputs and outputs GPIO[0..14], the SPI bus interface (SPI_MOSI etc.), and the DMA UART

(referred to as the “digital” pins).

• RESET_L (referenced to VDD_BATT).

• FORCE_AWAKE (a control input to the AO domain).

• The sensor interface pins (SENSOR_IF[0..7] and the RFID antenna pins

• RF connector.

• Power

5.2 G2M5477 Module Pins

Table 5-1: Pin Types

Type Description Reset

State

Gnd Ground.

I Digital input with ~83K pull-down. 3.3V tolerant Pull-down

I/O Digital input/output (bidirectional) 8mA drive, ~83K pull-down. 3.3V tolerant Pull-down

I/O-24 Digital input/output (bidirectional) 24mA drive, no pull-down. 3.3V tolerant Z

O Digital output, 8mA drive, ~83K pull-down. 3.3V tolerant Pull-down

T Digital output, 8mA drive, no pull-down. 3.3V tolerant Z

P Power. Power pins are used to supply power and to control the power supply configuration

A-1v2 Analog. 1.2V tolerant.

A-3v3 Analog, 3.3V tolerant

RF RF input and output. Impedance 50 Ohms

C Control input. 3.3V tolerant

Table 5-2: G2M5477 Module Pins

Pin Name Function Type, Voltage Icon

Support

G2C547 Pin Connection

44-

Ground Gnd, 0V Power GND_SLUG

35 NC - - - -

34 SENSOR_0 Sensor interface. Icon supports

SENSOR_0 for wake-on-serial

A-1v2, 1.2V max Yes SENSOR_IF0

33 SENSOR_POWER Voltage output from module for pow-

ering external sensors

A-3v3, 1.2-3.3V NocPOWER_SENSORS

32 SENSOR_3 Sensor interface A-1v2, 1.2V max NoaSENSOR_IF3

Interface, Connections and Mechanical

G2M5477 Preliminary Data Sheet

31 SENSOR_2 Sensor interface A-1v2, 1.2V max NoaSENSOR_IF2

30 SENSOR_1 Sensor interface A-1v2, 1.2V max NoaSENSOR_IF1

29 GPIO_4 GPIO I/O-24, 3.3V NobGPIO_4

28 GPIO_5 GPIO I/O-24, 3.3V NobGPIO_5

27 GPIO_6 GPIO I/O-24, 3.3V NobGPIO_6

26 GPIO_7 GPIO I/O-24, 3.3V NobGPIO_7

25 GPIO_8 GPIO I/O-24, 3.3V NobGPIO_8

24 GPIO_9 GPIO I/O, 3.3V NobGPIO_9

23 DMA_UART_RX DMA Serial UART RX I, 3.3V NocCPU_DEBUG_RX

22 DMA_UART_TX DMA Serial UART TX T, 3.3V NocCPU_DEBUG_TX

21 VDD_3V3_IN 3.3V power P

Do not connect when boost regulator is in

use.

Input, 3.0-3.7V when boost regulator is not

used.

Power VDD_3V3_RING

20 VDD_BATT Battery input

voltage

2.0-3.3V when boost regulator is in use.

3.0-3.7V when boost regulator is not used.

Power VDD_BATT_DIRTY

19 GND Ground Gnd, 0V Power -

18 3V3_REG_CTRL_

3V3 boost regulator switch control

input

C, Connect to 3V3_REG_CTRL_OUT to

enable boost regulator

Connect to GND to disable boost regulator

Power -

17 3V3_REG_CTRL_

OUT

3V3 boost regulator switch control

output

A-1v2, Connect to 3V3_REG_CTRL_IN to

enable boost regulator

Leave unconnected to disable boost regu-

lator

Power SREG_3V3_CTRL

16 SPI_MISO SPI master data in I, 3V3 NocSPI_MISO

15 SPI_SCLK SPI clock O, 3V3 NocSPI_SCLK

14 SPI_MOSI SPI master data out O, 3V3 NocSPI_MOSI

13 USER_UART_TX User UART Tx (GPIO_10) I/O, 3.3V Yes GPIO_10

12 USER_UART_RX User UART Rx (GPIO_11) I/O, 3.3V Yes GPIO_11

11 GPIO_12 GPIO I/O, 3.3V NobGPIO_12

10 GPIO_13 GPIO I/O, 3.3V NobGPIO_13

9 FORCE_AWAKE Force the CPU to wake C, 3.3V NoaFORCE_AWAKE

8 SUPERCAP_

BALANCE

Balance the centre pin voltage on

stacked supercaps

A-3v3, 3.3V NocSUPERCAP_

BALANCE

7 EPC_ANT_B EPC port B A-1v2, 1.2V max NocRFID_ANT_B

6 EPC_ANT_A EPC port A A-1v2, 1.2V max NocRFID_ANT_A

5 RESET_L Module reset. Active low C, 3.3V Yes POWERONRESET_L

4 SENSOR_7 Sensor interface A-1v2, 1.2V max NoaSENSOR_IF7

3 SENSOR_5 Sensor interface A-1v2, 1.2V max NoaSENSOR_IF5

2 SENSOR_4 Sensor interface A-1v2, 1.2V max NoaSENSOR_IF4

Table 5-2: G2M5477 Module Pins

Pin Name Function Type, Voltage Icon

Support

G2C547 Pin Connection

Interface, Connections and Mechanical

G2M5477 Preliminary Data Sheet

5.3 Pin Grouping

The interfaces to the G2M5477 consist of:

zPower Supply Generation: The G2M5477 supports

a wide range of battery types and 2 power supply

configurations.

zSPI master: connected to the on-board flash mem-

ory, the SPI master interface can be used to control

additional SPI-slave devices.

zDebug: reset, control, and DMA UART for high-

speed serial and software debug.

zSensors: to external sensors for measuring analog

parameters (e.g. temperature, humidity, shock),

and sensing security seals, motion and other

parameters.

zGPIO: to general-purpose digital devices. GPIO

can also control switches, or provide a user UART

and SDIO.

zRFID Antennas: up to two ~900MHz antenna for

emulating EPCglobal Generation-2 RFID tags.

zRF: to external antennas, Wi-Fi Tx/Rx and ISO

24730-2 Tx.

1 SENSOR_6 Sensor interface A-1v2, 1.2V max NoaSENSOR_IF6

H1 EXTERNAL

ANTENNA

CONNECTOR

U.FL connector RF Yes

A1 INTERNAL

ANTENNA

SMT PCB-style Antenna:

antenova Rufa Right: 3030A5887-01

www.antenova.com/?id=744

Yes

a. Connect to signal ground directly

b. Connect to signal ground via a 10k pulldown resistor

c. Leave disconnected

Table 5-2: G2M5477 Module Pins

Pin Name Function Type, Voltage Icon

Support

G2C547 Pin Connection

Interface, Connections and Mechanical

G2M5477 Preliminary Data Sheet

Figure 5-1: Pin Logical Grouping

SPI Master

Debug/

High-

speed

Serial

Sensors

GPIO

2.4 GHz

RFID

Power Supply Generation

Not

connected

Power Outputs

External Antenna Connector

(U.FL)

Internal Antenna

(SMT PCB-Style Antenna)

6 EPC_ANTENNA_A

7 EPC_ANTENNA_B

35 NC

SUPERCAP_BALANCE 8

3V3_REG_CTRL_IN 18

3V3_REG_CTRL_OUT 17

VDD_BATT 20

VDD_3V3 21

SENSOR_POWER 33

SPI_MISO 16

SPI_MOSI 14

SPI_SCLK 15

RESET_L 5

FORCE_AWAKE 9

DMA_UART_TX 22

DMA_UART_RX 23

GND 19,

36-44

34 SENSOR_0

30 SENSOR_1

31 SENSOR_2

32 SENSOR_3

2 SENSOR_4

3 SENSOR_5

1 SENSOR_6

4 SENSOR_7

29 GPIO[4] / SD_CMD

28 GPIO[5] / SD_D0

27 GPIO[6] / SD_D1

26 GPIO[7] / SD_D2

25 GPIO[8] / SD_D3

24 GPIO[9] / SD_CLK

13 GPIO[10]/USER_UART_TX

12 GPIO[11]/USER_UART_RX

11 GPIO[12]

10 GPIO[13]

G2M5477

Reset

GPIO/SDIO

Interface, Connections and Mechanical

G2M5477 Preliminary Data Sheet

5.4 Physical Dimensions

Figure 5-2: Physical Dimensions

d1 B

PIN 1 IDENTIFIER

PIN 1

SYMBOL MIN NOM MAX NOTE

A1.2

A1 2.25

C0.2

C1 0.4

D37

D1 28.05 28.1 28.15

E20

E1 18.65 18.7 18.5

d1 2.5

Common Dimensions

(Units of measure = mm)

Electrical Specifications

G2M5477 Preliminary Data Sheet

6 Electrical Specifications

6.1 Absolute Maximum Ratings

Warning: I/O voltages must adhere to Table 6-1 to avoid damage and to Table 6-4 or Table 6.5 as appropriate for correct

operation.

6.2 Recommended Operating Conditions

6.3 Package Thermal Specifications

Table 6-1: Absolute Maximum Ratings

Parameter Min. Typ. Max. Units Test Conditions/Comments

Vbatt 2.0 3.7 V

Rfmax – Maximum RF input 10 dBm To U.FL connector.

VHBM – ESD tolerance, human body model 2 kV

Input voltage for pins types:

Analog 3V3

Power 3V3

O, T, I, I/O, I/O-24

-0.3 See note V Note: The voltage should not exceed 3.7V, and

should be no more than 0.3V greater than the volt-

age on the VDD_3V3_IN pin. Note that this voltage

changes depending on the state of the module.

Refer to Section 4.8, Power Supplies for a discus-

sion of power supply operation.

Input voltage for analog pin type:

Analog 1V2

See note V TBD

Input voltage for analog pin type:

0 0 V This pad is an RF input or output, and is a DC short

to ground. No voltage should be placed on it.

Input voltage on control pins

FORCE_AWAKE and RESET_L

-0.3 3.7 V

Table 6-2: Recommended Operating Conditions

Parameter Min. Typ. Max. Units Test Conditions/Comments

Vbatt – Battery voltage (1) 2.0 3.3 V Using power supply configuration of Figure 4-2.

Vbatt – Battery voltage (2) 3.0 3.7 V Using power supply configuration of Figure 4-3.

Operating temperature -30 +85 C Applies to all specifications unless otherwise

noted.

Table 6-3: Thermal Specifications

Parameter Min. Typ. Max. Units Test Conditions/Comments

Package + enclosure thermal resistance 20 °C/W

Electrical Specifications

G2M5477 Preliminary Data Sheet

6.4 Digital Pin Parameters

6.5 Control Signal Parameters

6.6 Power Consumption

6.6.1 Asleep

Table 6-4: Digital Input, Output, Input/Output or Tristate Pin Parameters

Parameter Min. Typ. Max. Units Test Conditions/Comments

IOH – DC pin current output - high

Digital I/O 8mA drive

8 mA Output voltage = VDD_3V3_IN – 0.4V.

VDD_3V3_IN = 3.0V to 3.7V.

IOL – DC pin current output - low

Digital I/O 8mA drive

8 mA Output voltage = 0.4V.

VDD_3V3_IN = 3.0V to 3.7V.

IOH – DC pin high current output - high

Digital I/O 24mA drive

24 mA Output voltage = VDD_3V3_IN – 0.4V.

VDD_3V3_IN = 3.0V to 3.7V.

IOL – DC pin high current output - low

Digital I/O 24mA drive

24 mA Output voltage = 0.4V.

VDD_3V3_IN = 3.0V to 3.7V.

VIH – DC pin input logic level - high 2.3 V VDD_3V3_IN = 3V3

VIL – DC pin input logic level - low 1.0 V VDD_3V3_IN = 3V3

RGPIO– Pull-down resistance on GPIO 8mA pins 83 k Ohms

ICR – Maximum crowbar current on current loop

sensor inputs

2 uA Input voltage 0-1.2V

Timing skew on pins GPIO[0..14] ns

Table 6-5: Control Signal Parameters

Parameter Min. Typ. Max. Units Test Conditions/Comments

treset 160 us Min pulse width for reset assertion

tforce_awake 31 us Min pulse width for force_awake assertion

Vil (RESET_L) 0.3 Vdd_batt

Vih (RESET_L) 0.5 Vdd_batt

Vil (FORCE_AWAKE) 0.15 0.5 V

Vih (FORCE_AWAKE) 0.6 1.0

Table 6-6: Power Consumption when ASLEEP (Vbatt=2.75V)

Parameter Min. Typ. Max. Units Test Conditions/Comments

Current consumption when asleep; room

temperature.

4 uA Temperature < 30°C.

RFID and magnetic receiver disabled. 32kHz crys-

tal oscillator disabled, all digital pins pulled to

ground.

Current consumption when asleep; full tem-

perature range.

uA Temperature < 85°C.

RFID and magnetic receiver disabled.

Supply current for magnetic receiver 190 uA When enabled. Note the magnetic receiver is

intended to operate with a 1% duty cycle.

Time for magnetic receiver to wake and check

if signal is present

5.4 ms

Electrical Specifications

G2M5477 Preliminary Data Sheet

6.6.2 Awake

6.6.3 Wakeup Timing and Energy Considerations

6.7 Sensor Interface

See the G2C547 Datasheet, [5], for details of the sensor interface.

6.8 External Power Supplies

SENSOR_POWER corresponds to G2C547 POWER_SENSORS. See the G2C547 Datasheet, [5], for details.

RFID incremental supply current per RFID

antenna.

2 uA No reader present, when in ‘listen’ state.

RFID incremental supply current 50 uA Reader present, RFID receiver in ‘on’ state.

Sampled comparator supply current 4 uA When enabled.

32768Hz crystal oscillator supply current 1 uA When enabled.

Table 6-6: Power Consumption when ASLEEP (Vbatt=2.75V)

Parameter Min. Typ. Max. Units Test Conditions/Comments

Table 6-7: Power Consumption when AWAKE (Vbatt=3.3V)

Parameter Min. Typ. Max. Units Test Conditions/Comments

Program load 70 mW Does not include power to flash memory.

Program execution 65 mW

Doze 50 mW

Wait for Rx 90 mW

Rx Wi-Fi with CCK/DSSS (1,2,5.5,11 Mbit/s) 125 mW Averaged over packet of 1023 bytes.

Rx Wi-Fi with OFDM (6, 9... 54 Mbit/s) 130 mW

Tx Wi-Fi at +18 dBm 700 mW 1, 2, 5.5, or 11 Mbit/s.

Tx ISO24730-2 DSSS at +18 dBm 700 mW

Table 6-8: Wakeup Timing and Energy Consumption

Parameter Min. Typ. Max. Units Test Conditions/Comments

Time from wakeup event to program load

start

ms Min without boost regulator, and “Fast Boot” mode

Max with boost regulator, and no “Fast Boot”

Energy consumed from wakeup event to pro-

gram load start

mJ This includes booting eCos.

Time to load program from flash 0.25 ms/Kbyte SPI clock = 44MHz.

RF Performance

G2M5477 Preliminary Data Sheet

7 RF Performance

The G2M5477 is pre-calibrated. No user calibration is required.

7.1 2.4 GHz Radio

7.1.1 2.4 GHz Synthesizer

7.1.2 Wi-Fi Receiver

7.1.3 Wi-Fi Transmitter

Table 7-1: Synthesizer Parametric Specifications

Parameter Value Test Conditions/Comments

Channels supported 1-14

ISO-24730 center frequency 2441.75 MHz

Table 7-2: Wi-Fi Receiver Performance Specifications

Parameter Min. Typ. Max. Units Condition

Receive sensitivity for 10% packet error rate

for 1000 byte packet, measured using a

cabled connection to port H1

-70 dBm 54 Mbit/s

-72 dBm 48Mbit/s

-77 dBm 36 Mbit/s

-79 dBm 24 Mbit/s

-82 dBm 18Mbit/s

-82 dBm 12Mbit/s

-87 dBm 9Mbit/s

-89 dBm 6Mbit/s

-84 dBm 11Mbit/s

-87 dBm 5.5Mbit/s

-89 dBm 2Mbit/s

-90 dBm 1Mbit/s

RSSI resolution 0.25 dB

RSSI variation over temperature and battery

voltage 2V0 - 3V7

3dB

Maximum input level for 10% PER -20 dBm 802.11b/g specification

Input return loss -12 dB Differential input from 2400 to 2500 MHz.

Table 7-3: Wi-Fi Transmitter Performance Specifications

Parameter Min. Typ. Max. Units Condition

Tx Power +18 dBm

Tx EVM -28 dB

Firmware Features

G2M5477 Preliminary Data Sheet

8 Firmware Features

The G2C547 firmware provides the infrastructure

required by an application program for a low-power

802.11b/g device.

API features include:

zan embedded operating system (eCos)

za TCP/IP stack (LWIP)

zstart-up code

zan application loader

zinterrupt handling

zpower saving features

zdevice drivers

The G2M5477 module comes pre-installed with the Icon

application, which provides a serial interface for

networking functions. For more details see Chapter 9,

Application Information.

Icon developers may fulfill all application requirements

using Icon commands. G2M5477 developers requiring

lower level access to the firmware functions should refer

to G2C547 Programmer’s Reference Manual (PRM), [3],

and G2C547 Application Programming Interface (API)

Reference [4].

Application Information

G2M5477 Preliminary Data Sheet

9 Application Information

The G2M5477 Module comes pre-installed with Icon, an

application that provides a command line interface to

module functions.

Icon uses the UART interface for communication with the

host controller.

Icon provides commands to handle wireless networking

procedures, including authentication and association,

security and encryption and data transfer using UDP and

TCP protocols.

Icon also provides access to the module high level event

interface, via the eCos operating system. This makes it

unnecessary to perform low-level polling to determine

when to respond to module state changes.

For more details, see Icon Programmer’s Reference

Manual (PRM), [1].

Qualification

G2M5477 Preliminary Data Sheet

10 Qualification

This section is to contain information on:

ztesting and quality assurance

zOperational temperature range qualification

zESD resilience

Certification information is separate.

More detail will be provided in a later revision of this

document.

Design Guidelines

G2M5477 Preliminary Data Sheet

11 Design Guidelines

This section is to provide guidelines for incorporating the

G2M5477 module in a customer-designed device. It

covers issues such as:

zPads

zLayout

zReflowing

zHow the internal antenna is affected by a nearby

ground plane

More detail will be provided in a later revision of this

document.

Development Kit

G2M5477 Preliminary Data Sheet

12 Development Kit

The G2M5477 Module Development Kit (MDK) provides a

hardware and software platform for testing and developing

G2M5477 applications.

For more information refer to Getting Started with the

G2M5477 MDK, [6].

References

G2M5477 Preliminary Data Sheet

13 References

Throughout this data sheet, references to other

documents are listed. The following documents provide

additional material:

13.1 Icon Developers

1. Icon Programmer’s Reference Manual (PRM)

G2 Microsystems 2008

2. Icon API Reference

G2 Microsystems 2008

13.2 G2M5477 Developers

3. G2C547 Programmer’s Reference Manual (PRM) -

G2 Microsystems 2008

4. G2C547 Application Programming Interface (API)

Reference - G2 Microsystems 2008

5. G2C547 Datasheet - G2 Microsystems 2008

13.3 MDK Users

6. Getting Started with the G2M5477 MDK

G2 Microsystems 2008

7. G2M5477 Users Guide

G2 Microsystems 2008

13.4 Standards and Excellence

8. EPCglobal - Class 1 Generation 2 UHF RFID Protocol

Version 1.09 -

http://www.epcglobalinc.org/standards

9. IEEE Std 802.11 - 2007 -

http://ieeexplore.ieee.org/xpl/standards.jsp

10. SPARC V8 Architecture Manual -

http://www.sparc.org/standards/V8.pdf

References

G2M5477 Preliminary Data Sheet

Compliance

G2M5477 Preliminary Data Sheet

14 Compliance

14.1 FCC Compliance

This equipment has been tested and found to comply with

the limits for a Class B digital device, pursuant to Part 15

of the FCC rules. These limits are designed to provide

reasonable protection against harmful interference in a

residential installation. This equipment generates, uses

and can radiate radio frequency energy and, if not

installed and used in accordance with the instructions,

may cause harmful interference to radio communications.

However, there is no guarantee that interference will not

occur in a particular installation.

14.1.1 Troubleshooting

If this equipment does cause harmful interference to radio

or television reception, which can be determined by

turning the equipment off and on, the user is encouraged

to try to correct the interference by one or more of the

following measures:

zReorient or relocate the receiving antenna.

zIncrease the separation between the equipment

and receiver.

zConnect the equipment to an outlet on a circuit dif-

ferent from that to which the receiver is connected.

zConsult the dealer or an experienced radio/TV

technician.

This device complies with Part 15 of the FCC Rules.

14.1.2 Conditions

Operation is subject to the following two conditions:

zThis device may not cause harmful interference

zThis device must accept any interference received,

including interference that may cause undesired

operation.

14.1.3 Markings

To satisfy FCC exterior labeling requirements, the

following text must be placed on the exterior of the end

product.

Any similar wording that expresses the same meaning

may be used.

14.1.4 FCC Warning

Modifications

Modifications not expressly approved by the manufacturer

could void the user’s authority to operate the equipment

under FCC Rules.

Radio Frequency Exposure

This equipment has been evaluated in accordance with

the FCC bulletin 56 “Hazards of radio frequency and

electromagnetic fields” and bulletin 65 “Human exposure

to radio frequency and electromagnetic fields”.

A distance greater than or equal to 20 cm from the

device should be maintained for safe operation in an

uncontrolled environment.

Contains Module FCC ID: U3O-G2M5477

Table 14-1: Radio Frequency Exposure

Property (Units of Measurement) Value

Antenna Gain (dBi) 2.0

Numeric Gain (numeric) 1.58

Max Allowable Peak Power (dBm) +23.76

Max Allowable Peak Power (mW) 237.7

Calculated Safe Distance at 1 mW/cm2 (cm) 5.5

Minimum Separation Distance 20a

a. Note: for mobile or fixed location transmitters the minimum sepa-

ration distance is 20cm, even if calculations indicate the MPE dis-

tance to be less,

Revision History and Glossary

G2M5477 Preliminary Data Sheet

15 Revision History and Glossary

Glossary

Table 15-1: Document Revision History

Version Date Description

0.01 October 2008 First draft

0.02-0.10 November 2008 Corrections and additions

0.11 December 2008 Release

0.12 December 2008 Corrections

Table 15-2: Acronyms and Abbreviations

Term Definition

ADC Analog-to-digital converter

AES Advanced encryption standard

AGC Automatic gain control

AO Always on

API Application programming interface

DAC Digital to Analog Converter.

DCF Distributed Coordination Function - see 802.11 specifi-

cation

DSSS Direct sequence spread spectrum

EPC Electronic product code

FET Field effect transistor

FSK Frequency shift keying

GPIO General-purpose input/output

IEEE

802.11b/g

The 802.11b/g standard for wireless local area networks

(WLANs) - often called Wi-Fi - is part of the 802.11

series of WLAN standards from the Institute of Electrical

and Electronics Engineers (IEEE). 802.11b/g is back-

ward compatible with 802.11.

The G2M5477 implements the IEEE 802.11b/g transmit

and receive functions.

MAC Medium access controller. Part of the 802.11 trans-

ceiver.

MDS Minimum detectable signal

MRM Mobile resource management

NRE Non-Recurring Engineering costs

NVM Always On Memory

OOK On-off keying

PCB Printed circuit board

PHY Physical layer processor. Part of the 802.11 transceiver.

PMU Power management unit. A section of the G2M5477 that

controls which parts of the module are active at any

time.

QFN Quad-flat no-lead package

RSSI Received signal strength indication. Measurement of

signal strength used by wireless systems to estimate

the location of the clients.

RTLS Real-time locating systems

Rx Receive

SHA Secure hash algorithm

SMU Sampled measurement unit

SoC System on a chip

SPI Serial peripheral interface. A standard serial interface

used for DRAMs and other components.

TCO Total Cost of Ownership

TCP/IP TCP/IP (transmission control protocol/internet protocol)

is the basic communication language or protocol of the

Internet.

Tx Transmit

WLAN Wireless local area network

WMM Wireless Multi-Media. “WMM” is a registered trademark

of the Multimedia Alliance, of which G2 is a member.

The Wireless Multimedia Alliance generates specifica-

tions and practices which, if followed, lead to greater

satisfaction with IEEE 802.11-compliant items.

Wi-Fi Wireless fidelity. A registered trademark of the Wi-Fi alli-

ance for certain types of wireless local area networks

(WLAN) that use specifications conforming to IEEE

802.11.

Table 15-2: Acronyms and Abbreviations (Cont.)

Term Definition

Microchip Technology G2M5477 Wi-Fi Module User Manual G2C547 Data Sheet

Microchip Technology Inc. Wi-Fi Module G2C547 Data Sheet

Users Manual

Navigation menu

Namespaces

Views

Navigation