| GPIO0 |
GPIO0 |
download button control, default to high, when starting, low to enter download mode |
| GPIO1 |
UART_TX0 |
used for debugging serial port output |
| GPIO2 |
TP3 |
reserve JTAG testing points |
| GPIO3 |
UART_RX0 |
used for debugging serial port input |
| GPIO4 |
GPIO4 |
NC |
| GPIO5 |
PHY_RESET |
MAC phy reset control |
| GPIO6 |
PSRAM_CLK |
psram clock signal |
| GPIO7 |
PSRAM SDO/SD0 |
psram data signal SDO/SD0 |
| GPIO8 |
PSRAM SDI/SD1 |
psram data signal SDI/SD1 |
| GPIO9 |
PSRAM SHD/SD2 |
psram data signal SHD/SD2 |
| GPIO10 |
PSRAM SWP/SD3 |
psram data signal SWP/SD3 |
| GPIO11 |
GPIO11 |
NC |
| GPIO12 |
BT LED |
ble led control, pull down to light up |
| GPIO13 |
I2C_CLK |
I2C clock signal |
| GPIO14 |
POWER_LED |
power led control |
| GPIO15 |
I2C_DATA |
I2C data signal |
| GPIO16 |
PSRAM_CE |
psram control signal |
| GPIO17 |
PHY_CLK |
phy chip clock signal |
| GPIO18 |
MDIO |
phy chip control signal MDIO |
| GPIO19 |
RMII_TXD0 |
RMII interface TX data TXD0 |
| GPIO21 |
RMII_TXEN |
RMII interface TX enable TXEN |
| GPIO22 |
RMII_TXD1 |
RMII interface TX data TXD1 |
| GPIO23 |
MDC |
phy chip control signal MDC |
| GPIO25 |
RMII_RXD0 |
RMII interface RX data RXD0 |
| GPIO26 |
RMII_RXD1 |
RMII interface RX data RXD1 |
| GPIO27 |
RMII_CS_DV |
RMII interface collision detection signal CS_DV |
| GPIO32 |
NETWORK LED |
network led control |
| GPIO33 |
BUTTON |
button input |
| GPIO34 |
GPIO34 |
NC |
| GPIO35 |
GPIO35 |
NC |
| GPIO36 |
GPIO36 |
NC |
| GPIO39 |
GPIO39 |
NC |
