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GS2101M Low Power Wi-Fi Module Hardware User Guide
1VV0301395 Rev 3.0
Page
33
of
53
2017-11-13
Pins
Name
Voltage
Domain
Internal Bias
after
Hardware
Reset
Drive
Strength
(mA)
Signal State
Description
16
GPIO10/PWM0
(see
Note 3)
VIN_3V3
Pull-down
4
Digital
Input/Output
GPIO/Pulse
Width
Modulator 0
17
GPIO9/I2C_CLK
(see Note 3 and
Note 5)
VIN_3V3
Pull-down
12
Digital
Input/Output
GPIO/Inter-
Integrated
Circuit Clock
18
GPIO8/I2C_DATA
(see Note 3 and
Note 5)
VIN_3V3
Pull-down
12
Digital
Input/Output
GPIO/Inter-
Integrated
Circuit Data
19
GPIO32/SDIO_DA
T2/
UART1_TX (see
Note 3)
VIN_3V3
Pull-down
4
Digital
Input/Output
GPIO/SDIO_D
ATA Bit
2/UART1
Transmitter
Output
20
GPIO33/SDIO_DA
T3/
SPI0_CS_n_0
(see Note 3)
VIN_3V3
Pull-up
4
Digital
Input/Output
GPIO/SDIO
Data Bit
3/SPI0 Chip
Select Input 0
from the
HOST (Active
Low)
21
GPIO34/SDIO_CM
D/
SPI0_DIN (see
Note 3)
VIN_3V3
Pull-down
4
Digital
Input/Output
GPIO/SDIO
Command
Input/SPI0
Receive
Data Input
22
GPIO35/SDIO_CL
K/
SPI0_CLK (see
Note 3)
VIN_3V3
Pull-down
4
Digital
Input/Output
GPIO/SDIO
Clock/SPI0
Clock Input
from the HOST
23
GPIO36/SDIO_DA
T0/
SPI0_DOUT (see
Note
3) (see Errata E-1)
VIN_3V3
Pull-down
4
Digital
Input/Output
GPIO/SD
IO Data
Bit
0/SPI0
Transmit
Data
Output to
the
HOST
24
GPIO37/
SDIO_DAT1_INT
(see Note 3 and
Note 8)
VIN_3V3
Pull-down
4
Digital
Input/Output
GPIO/4-bit
SDIO DATA Bit
1/SDIO SPI
Mode Interrupt
Tab. 5 GS2101Mxx Module Pin Signal Description (Continued)