Users Manual

RF-WM-10AFB1
www.szrfstar.com V1.0 - Jan., 2020
Shenzhen RF-star Technology Co., Ltd. Page 11 of 25
2.4 Pin Multiplexing
Table 3. Pin Multiplexing of RF-WM-11AFB1
Pin name
JTAG
SDIO
UART Group
I2C Group
SPI Group
I2S Group
PCM Group
Wl_LED
PWM
ETE
WKDT
GPIO INT
Default State
SCHMT
GPIO_A0
SD_D2
UART2_IN
SPI1_MISO
GPIO_INT
PH
O
GPIO_A1
SD_D3
UART2_CTS
SPI1_MOSI
GPIO_INT
HI
GPIO_A2
SD_CMD
UART2_RTS
SPI1_CLK
PH
O
GPIO_A3
SD_CLK
PH
O
GPIO_A4
SD_D0
UART2_OUT
SPI1_CS
PH
GPIO_A5
SD_D1
D_SBY0
PH
GPIO_B0
UART_LOG_OUT
ETE0
HI
GPIO_B1
UART_LOG_IN
WL_LED0
ETE1
D_SLP0
PH
GPIO_B2
I2C3_SCL
ETE2
HI
O
GPIO_B3
I2C3_SDA
ETE3
GPIO_INT
PH
GPIO_C0
UART0_IN
SPI0_CS0
I2S1_WS
PCM1_SYNC
PWM0
ETE0
HI
GPIO_C1
UART0_CTS
SPI0_CLK
I2S1_CLK
PCM1_CLK
PWM1
ETE1
GPIO_INT
HI
O
GPIO_C2
UART0_RTS
SPI0_MOSI
I2S1_SD_TX
PCM1_OUT
PWM2
ETE2
HI
GPIO_C3
UART0_OUT
SPI0_MISO
I2S1_MCK
PCM1_IN
PWM3
ETE3
GPIO_INT
HI
O
GPIO_C4
I2C1_SDA
SPI0_CS1
I2S1_SD_RX
GPIO_INT
HI
GPIO_C5
I2C1_SCL
SPI0_CS2
GPIO_INT
HI
O
GPIO_E0
JTAG_TRST
UART0_OUT
I2C2_SCL
SPI0_CS0
PCM0_SYNC
PWM0
PH
O
GPIO_E1
JTAG_TDI
UART0_RTS
I2C2_SDA
SPI0_CLK
PCM0_CLK
PWM1
GPIO_INT
PH
O
GPIO_E2
JTAG_TDO
UART0_CTS
I2C3_SCL
SPI0_MOSI
PCM0_OUT
PWM2
GPIO_INT
PH
O
GPIO_E3
JTAG_TMS
UART0_IN
I2C3_SDA
SPI0_MISO
PCM0_IN
PWM3
GPIO_INT
PH
O
GPIO_E4
JTAG_CLK
SPI0_CS1
PH
O
Note: PH = Pull-High, HI = High-Impedance