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LEDs
GS1011M
Wi-Fi Module
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
Pin #
Name
B1
5V
B2
GND
B3
3.3V
B4
ELE_PS_SENSE
B5
GND
B6
GND
SPI1_CLK / SDHC1_CLK
B7
SPI1_CS1 / SDHC1_CS1
B8
SPI1_CS0 / SDHC1_CS0
B9
SPI1_MOSI / SDHC1_CMD
B10
SPI1_MISO / SDHC1_D0
B11
ETH_COL
B12
TWRWIFIG1011MIUM
Secondary Connector
Program
Switch
TWR-WIFI-G1011MI Primary Connector
Side B
Usage
Used
Ground
X
3.3V Power
X
Ground
X
Ground
X
MSPI_CLK
MSPI_CSx
MSPI_CSx
MSPI_DIN
MSPI_DOUT
Mechanical Key
TWR-WIFI-G1011MI User's Manual
Primary Connector
Pin #
Jmp
Name
A1
5V
A2
GND
A3
3.3V
A4
3.3V
A5
GND
A6
GND
SCL0
A7
SDA0
A8
A9
GPIO9 / CTS1
A10
GPIO8 / SDHC_D2
A11
GPIO7 / SD_WP_DET
ETH_CRS
A12
RS232 DB9
Connector for
Programming
Module
Power Switch
Side A
Usage
Used
Jmp
Ground
X
3.3V Power
X
3.3V Power
X
Ground
X
Ground
X
EXT_RESET
X
Page 6 of 9
X
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