Freescale Semiconductor TWR-WIFI-G1011MI User manual

Freescale Semiconductor Inc. TWRWIFIG1011MIUM
TWR-WIFI-G1011MI
User’s Manual
Rev. 1.0

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Contents
1 Overview ......................................................................................................................................................3
2 Reference Documents..............................................................................................................................4
3 Hardware Features...................................................................................................................................4
3.1 GS1011MIP Module ...........................................................................................................................................................4
3.2 System Power.......................................................................................................................................................................5
3.3 Special I/O, access headers, etc.....................................................................................................................................5
3.4 Elevator Connections........................................................................................................................................................6
4 Jumper Table ..............................................................................................................................................8
Revision History
Revision
Date
Changes
1.0
Dec 2010
Initial Release

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1Overview
The GainSpan Wi-Fi Tower Module (TWR-WIFI-G1011MI) is a low-cost evaluation, demonstration and
development board that features an 802.11b solution from GainSpan. The following list summarizes
the features of the TWR-WIFI-G1011MI:
GainSpan GS1011MIP Wi-Fi module
oCompliant to 802.11b and operates with standard 802.11 b/g/n access points at speeds
up to 11 Mbps
Supports Infrastructure or Adhoc mode
oUART and SPI interfaces
Up to 3 MHz in SPI Slave Mode
Up to 921.6 kbps baud rate on UART
oFull Wi-Fi stack including WPS and optional networking stack and services
o802.11i Security
WEP, WPA, WPA2-PSK, Enterprise
oEmbedded Web Server for Provisioning
oCertified RF Module: FCC/IC, ETSI, RoHS, Compliant with JAPAN regulatory
A block diagram for the TWR-WIFI-G1011MI is shown in the figure below.
SPI_HOST_WAKEUP GPIO28
DB9 Connector
(For Programming)
UART
SPI/UART LED
LED
Elevator Connector
SPI/UART
Freescale
MCU/MPU
GainSpan
GS1011MIP
Low Power
Wi-Fi Module
RS232
XCVR
3.3V
Antenna
Figure 1. TWR-WIFI-G1011MI Block Diagram

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2Reference Documents
The documents listed below should be referenced for more information on the Freescale Tower
system and the TWR-WIFI-G1011MI. Refer to http://www.freesale.com/tower for the latest revision of
all Tower documentation.
TWR-WIFI-G1011MI Quick Start Guide
TWR-WIFI-G1011MI Lab Tutorial
TWR-WIFI-G1011MI Schematics
GainSpan IP to Wi-Fi Adapter Guide
GainSpan TWR Wi-Fi Driver Guide
For technical documents on the GainSpan Wi-Fi module refer to http://www.gainspan.com
3Hardware Features
This section provides more details about the features and functionality of the TWR-WIFI-G1011MI.
3.1 GS1011MIP Module
GS1011MIP module is a highly integrated ultra low power Wi-Fi module that contains the following:
GainSpan’s GS1011 Wireless SoC, which contains media access controller (MAC), baseband
processor, on-chip flash memory and SRAM, and a network processor in a single package.
Built in certified PCB trace antenna or external Antenna Options and onboard 32 KHz & 44 MHz
crystal circuitries.
oThe GS1011MIP has a capability of +8 dBm (typical) output power at the antenna
Module includes a variety of I/O interfaces:
oTwo UART with optional hardware flow control support
oTwo SPI block with Master or Slave Operation
oI2C with Master or slave operation
oTwo low-power 10-bit ADC capable of running at up to 32 Ksamples/Sec.
oGPIO’s, and LED Drivers/GPIO with 20mA capabilities, JTAG
The Module carries onboard single supply monitor for under voltage supply and onboard 1.8V
regulator with enable/disable capabilities for power critical applications. For additional details refer to
the GS1011M data sheet available from GainSpan. Below is a high level block diagram of the
GS1011MIP module. Other pin-compatible variations of the module are also available. Please refer to
the GainSpan GS1011M Module datasheet.

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The TWR-WIFI-G1011MI module connects to the Freescale Tower platform using the SPI or UART
interface and uses the TCP/IP stack of the Freescale MQX system. The module firmware supports basic
AT command set and the MQX driver for the GS1011MIP communicate using these AT command sets.
By default the SPI interface is used.
3.2 System Power
The TWR-WiFi-G1011MI is powered by 3.3V from the Primary Elevator connector.
3.3 Special I/O, access headers, etc.
The firmware on the GainSpan GS1011MIP runs directly from the on-board flash on the GS1011 SoC.
To allow for updating of the program on the flash, the TWR-WIFI-G1011MI incorporates a UART serial
interface for programming purposes. This interface is brought out to a standard RS232 DB9 connector
via a RS232 transceiver. There are 3 buttons on the board which are currently reserved for future use.
The TWR-WiFi-G1011MI also has LED’s connected to the module. These LED’s are connected to GPIO
pins of the module and can be toggled using the serial AT commands to indicate activity. Table below
indicates the connection and functionality of the LEDs.
ELEVATOR Connection
GS1011MIP Connection
Description
D1
+3.3V
VIN_3V3
Indicates Active Power to Module
D2
GPIO30_LED1
LED indication via GPIO30 of GS1011MIP
D3
GPIO31_LED2
LED indication via GPIO31 of GS1011MIP
D4
+3.3V
Indicates Active Power on Tower System
For further details refer to the TWR-WIFI-G1011MI schematics.

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Power Switch
Secondary Connector
GS1011M
Wi-Fi Module
Program
Switch
RS232 DB9
Connector for
Programming
Module
Primary Connector
LEDs
3.4 Elevator Connections
The TWR-WIFI-G1011MI features two expansion card-edge connectors that interface to Elevator
boards in a Tower system: the Primary and Secondary Elevator connectors. The Primary Elevator
connector, comprised of sides A and B, is utilized by the TWR-WIFI-G1011MI, while the Secondary
Elevator connector only makes connections to ground (GND). Table 1 provides the pinout for the
Primary Elevator Connector. An “X” in the “Used” column indicates that there is a connection from the
TWR-WIFI-G1011MI to that pin on the Elevator connector. An “X” in the “Jmp” column indicates that a
jumper is available that can configure or isolate the connection from the Elevator connector.
Table 1. TWR-WIFI-G1011MIPrimary Elevator Connector Pin-out
TWR-WIFI-G1011MI Primary Connector
Side B
Side A
Pin #
Name
Usage
Used
Jmp
Pin #
Name
Usage
Used
Jmp
B1
5V
A1
5V
B2
GND
Ground
X
A2
GND
Ground
X
B3
3.3V
3.3V Power
X
A3
3.3V
3.3V Power
X
B4
ELE_PS_SENSE
A4
3.3V
3.3V Power
X
B5
GND
Ground
X
A5
GND
Ground
X
B6
GND
Ground
X
A6
GND
Ground
X
B7
SPI1_CLK / SDHC1_CLK
MSPI_CLK
A7
SCL0
B8
SPI1_CS1 / SDHC1_CS1
MSPI_CSx
A8
SDA0
B9
SPI1_CS0 / SDHC1_CS0
MSPI_CSx
A9
GPIO9 / CTS1
EXT_RESET
X
X
B10
SPI1_MOSI / SDHC1_CMD
MSPI_DIN
A10
GPIO8 / SDHC_D2
B11
SPI1_MISO / SDHC1_D0
MSPI_DOUT
A11
GPIO7 / SD_WP_DET
Mechanical Key
B12
ETH_COL
A12
ETH_CRS

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B13
ETH_RXER
A13
ETH_MDC
B14
ETH_TXCLK
A14
ETH_MDIO
B15
ETH_TXEN
A15
ETH_RXCLK
B16
ETH_TXER
A16
ETH_RXDV
B17
ETH_TXD3
A17
ETH_RXD3
B18
ETH_TXD2
A18
ETH_RXD2
B19
ETH_TXD1
A19
ETH_RXD1
B20
ETH_TXD0
A20
ETH_RXD0
ipB21
GPIO1
GPIO_RST
X
X
A21
SSI_MCLK
B22
GPIO2
GPIO29
A22
SSI_BCLK
B23
GPIO3
GPIO19
A23
SSI_FS
B24
CLKIN0
A24
SSI_RXD
B25
CLKOUT1
A25
SSI_TXD
B26
GND
Ground
X
A26
GND
Ground
X
B27
AN7
A27
AN3
B28
AN6
A28
AN2
B29
AN5
A29
AN1
B30
AN4
A30
AN0
B31
GND
Ground
X
A31
GND
Ground
X
B32
DAC1
A32
DAC0
B33
TMR3
A33
TMR1
B34
TMR2
A34
TMR0
B35
GPIO4
DC_DC_CNTL
A35
GPIO6
ALARM2
B36
3.3V
3.3V Power
X
A36
3.3V
3.3V Power
X
B37
PWM7
A37
PWM3
B38
PWM6
A38
PWM2
B39
PWM5
A39
PWM1
B40
PWM4
A40
PWM0
B41
CANRX
A41
RXD0
UART0_TX
X
B42
CANTX
A42
TXD0
TWR_UART0
X
X
B43
1WIRE
A43
RXD1
B44
SPI0_MISO
SSPI_DOUT
X
A44
TXD1
B45
SPI0_MOSI
SSPI_DIN
X
A45
GPIO
B46
SPI0_CS0
SSPI_CS
X
X
A46
GPIO
B47
SPI0_CS1
SSPI_CS
X
X
A47
GPIO
B48
SPI0_CLK
SSPI_CLK
X
A48
GPIO
B49
GND
Ground
X
A49
GND
Ground
X
B50
SCL1
I2C_CLK
A50
GPIO
B51
SDA1
I2C_DATA
A51
GPIO
B52
GPIO5
ALARM1
X
A52
GPIO
B53
USB_DP_PDOWN
A53
GPIO
B54
USB_DM_PDOWN
A54
USB_DM
B55
IRQ_H
A55
USB_DP
B56
IRQ_G
GPIO28
X
X
A56
USB_ID
B57
IRQ_F
A57
USB_VBUS
B58
IRQ_E
GPIO28
X
X
A58
TMR7
B59
IRQ_D
A59
TMR6
B60
IRQ_C
GPIO28
X
X
A60
TMR5
B61
IRQ_B
A61
TMR4
B62
IRQ_A
GPIO28
X
X
A62
RSTIN_b

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B63
FB_ALE/FB_CS1_b
A63
RSTOUT_b
EXT_RESET
X
X
B64
FB_CS0_b
A64
CLKOUT0
B65
GND
Ground
X
A65
GND
Ground
X
B66
FB_AD15
A66
FB_AD14
B67
FB_AD16
A67
FB_AD13
B68
FB_AD17
A68
FB_AD12
B69
FB_AD18
A69
FB_AD11
B70
FB_AD19
A70
FB_AD10
B71
FB_R/W_b
A71
FB_AD9
B72
FB_OE_b
A72
FB_AD8
B73
FB_D7
A73
FB_AD7
B74
FB_D6
A74
FB_AD6
B75
FB_D5
A75
FB_AD5
B76
FB_D4
A76
FB_AD4
B77
FB_D3
A77
FB_AD3
B78
FB_D2
A78
FB_AD2
B79
FB_D1
A79
FB_AD1
B80
FB_D0
A80
FB_AD0
B81
GND
Ground
X
A81
GND
Ground
X
B82
3.3V
3.3V Power
X
A82
3.3V
3.3V Power
X
4Jumper Table
There are several jumpers provided for isolation, configuration, and feature selection. Refer to the
following table for details. The default installed jumper settings are shown in bold.
Table 2. TWR-WIFI-G1011MI Jumper Table

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Jumper
Option
Setting
Description
SW1
Power Supply
Input
TOWER
Power from Tower System 3.3V
DC POWER JACK
Power from DC power jack (J2)
SW2
Mode Selection
RUN
GS1011MI in standard "run" mode
PROGRAM
GS1011MI in program mode
J3
UART Routing
Selection
1-2
Connect GS1011MI UART0 to on-board RS232/DB9
2-3
Connect GS1011MI UART0 to Tower System
J6
Serial Interface
Selection
1-2
Enable SPI interface from Tower to GS1011MI
2-3
Enable UART interface from Tower to GS1011MI
J7
Master SPI Port
CS Selection
1-2
Connect Tower SPI1_CS1 to master SPI CS on GS1011MI
3-4
Connect Tower SPI1_CS0 to master SPI CS on GS1011MI
J9
Slave SPI Port CS
Selection
1-2
Connect Tower SPI0_CS0 to slave SPI CS on GS1011MI
3-4
Connect Tower SPI0_CS1 to slave SPI CS on GS1011MI
J10
Interrupt
Selection
1-2
Connect GS1011MI interrupt to Tower IRQ_G (B56)
3-4
Connect GS1011MI interrupt to Tower IRQ_E (B58)
5-6
Connect GS1011MI interrupt to Tower IRQ_C (B60)
7-8
Connect GS1011MI interrupt to Tower IRQ_A (B62)
J11
GS1011MI Reset
Selection
1-2
Connect GS1011MI Reset to Tower GPIO9 (A9)
2-3
No connection
J12
1-2
Connect GS1011MI Reset to Tower RSTOUT (A63)
2-3
Connect GS1011MI Reset to Tower GPIO1 (B21)