User's Manual
Table Of Contents
GTI_MW300_LApplications
WLANMicrocontrollerIEEE802.11b/g/n(Rev1.0)
1.GeneralDescription
The GTI‐MW300L is a high performance, low‐power WLAN WiFi Module with highly integrated System‐on‐Chip (SoC)
solution designed for a broad array of smart devices for Internet of Things (IoT),
Machine‐to‐Machine (M2M), home automation, and Smart Ener
gy applica
tions. A high degree of integration enables
verylowsystemcostsrequiringonlyasingle3.3Vpowerinput,a38.4MHzcrystal,andSPIFlash.IthasbeenIntegrated
with on board sheet metal stamping antenna and another U.FL connector optional for external antenna. The SoC
includes a full‐fe
atured W LAN subsy
stem powered by proven and mature IEEE 802.11n/g/b Marvell technology. The
WLAN subs ystem integrates a WLAN MAC, baseband, and direct‐conversion RF radio with integrated PA, LNA, and
transmit/receiveswitch.Italsointegratesa CPUsubsystemwith integratedmemorytorun MarvellWLANfirmware to
handle re
al time WLAN pr
otocol processing to off‐load many WLAN functions from the main application CPU. The
88MW300 application subsyst em is powered by an ARM Cortex‐M4F CPU that operates up to 200 MHz. The device
supports an integrated 512 KB SRAM, 128 KB mask ROM, and a QSPI interface to ex
ternal Flash. An in
tegrated Flash
Controllerwitha32KBSRAMcacheenablesexecuteInPlace(XIP)supportforfirmwarefromFlash.TheSoCisdesigned
for low‐power operation and includes sever al low‐power states and fast wake‐up times. Multiple power domains and
clockscanbeindividuallyshutdo
wntosav
epower.TheSoCalsohasahigh‐efficiencyinternalPAthatcanbeoperatedin
low‐power mode to save power. The microcontroller and WLAN subsystems can be placed into low‐power states,
independently,supportingavariety ofapplicationuse cases.AninternalDC‐DC regulatorprovidesthe 1.8Vra
il forthe
WLAN subs
ystem. The SoC provides a full array of peripheralinterfacesincluding SSP/SPI/I2S (3x), UART (3x), I2C (2x),
GeneralPurposeTimersandPWM,ADC,DAC,AnalogComparator,andGPIOs.Italsoincludesahardwarecryptographic
engine,RTC,and WatchdogTimer.The 88MW300includesa highspeed USBOn‐The‐Go(O
TG
)interfacetoenable USB
audio, video, and other applications. A complete set of digital and analog interfaces enable direct interfacing for I/O
avoiding the need for external chips. The application CPU can be used to support custom application development
avoidingtheneedforanothermicrocontrollerorpr
ocessor.
Figure
1BlockDiagram