User's Manual

GS2100M Low Power WiFi Module Data Sheet Pin-out and Signal Description
GS2100Mxx Device Pin-out
GS2100M-DS-001212, Release 0.10 Confidential Preliminary 35
20
GPIO33/SDIO_DAT3/
SPI0_CS_n_0
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_CMD/
SPI0_DIN
VIN_3V3 Pull-down 4
Digital
Input/Output
GPIO/SDIO Command
Input/SPI0 Receive Data
Input
22
GPIO35/SDIO_CLK/
SPI0_CLK
VIN_3V3 Pull-down 4
Digital
Input/Output
GPIO/SDIO Clock/SPI0
Clock Input from the HOST
23
GPIO36/SDIO_DAT0/
SPI0_DOUT
VIN_3V3 Pull-down 4
Digital
Input/Output
GPIO/SDIO Data Bit
0/SPI0 Transmit Data
Output to the HOST
24
GPIO37/
SDIO_DAT1_INT
(see Note 8)
VIN_3V3 Pull-down 4
Digital
Input/Output
GPIO/4-bit SDIO DATA Bit
1/SDIO SPI Mode Interrupt
25 NC Not Connected
26 NC Not Connected
27 GPIO1/UART0_TX VIN_3V3 Pull-down 4
Digital
Input/Output
GPIO/UART0 Transmitter
Output. This pin is used for
Code Restore.
28
GPIO25/UART0_RTS
(see Note 6)
VIN_3V3 Pull-down 12
Digital
Input/Output
GPIO/UART0 Request to
Send Output. This pin is
used for Program Select.
29 GPIO0/UART0_RX VIN_3V3 Pull-down 4
Digital Input
Output
GPIO/UART0 Receive
Input
30
GPIO24/UART0_CTS
(see Note 6)
VIN_3V3 Pull-down 12
Digital
Input/Output
GPIO/UART0 Clear to
Send Input
31
GPIO31/PWM2
(see Note 4)
VIN_3V3 Pull-down 16
Digital
Input/Output
GPIO/Pulse Width
Modulation Output 2.
This pin is used for Program
Mode.
32 GPIO30/PWM1 VIN_3V3 Pull-down 16
Digital
Input/Output
GPIO/Pulse Width
Modulation Output 1
33 NC Not Connected
34
GPIO28/I2C_DATA
(see Note 5)
VIN_3V3 Pull-down 12
Digital
Input/Output
GPIO/Inter-Integrated
Circuit Data
35 JTAG_TCK VIN_3V3 Pull-up Digital Input JTAG Test Clock
36 JTAG_TDO VIN_3V3 Not Applicable Digital Output JTAG Test Data Out
Table 7 GS2100Mxx Module Pin Signal Description (Continued)
Pins Name Voltage
Domain
Internal Bias after
Hardware Reset
Drive
Strength
(mA)
Signal State Description