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Contents
GPIOsEdit
DescriptionEdit
i.MX93 can handle external pins in many different ways and most of them can be configured as GPIOs. When a pin is set as a GPIO, it is possible to read its value, change its direction or change output value directly from the shell.
SignalsEdit
The following table describes some GPIOs signals available on J33 WIDE™ connector:
| Pin# | SOM Pin# | Pin name | GPIO index | Alternate function |
|---|---|---|---|---|
| 1 | J10.134 | SD1_STROBE | GPIO3_IO018 | SD1_STROBE |
| 2 | J10.179 | GPIO_IO00 | GPIO2_IO30 | SPI6_PCS0 |
| 3 | J10.136 | - | - | - |
| 4 | J10.181 | GPIO_IO03 | GPIO2_IO3 | SPI6_SCK |
| 5 | J10.138 | SD1_DATA0 | GPIO2_IO2 | SD1_DATA0 |
| 6 | J10.183 | GPIO_IO01 | GPIO2_IO01 | SPI6_SIN |
| 7 | J10.140 | SD1_DATA1 | GPIO2_IO3 | SD1_DATA1 |
| 8 | J10.195 | GPIO_IO13 | GPIO2_IO13 | SPI6_SOUT |
| 9 | J10.142 | SD1_DATA2 | GPIO2_IO4 | SD1_DATA2 |
| 11 | J10.144 | SD1_DATA3 | GPIO2_IO5 | SD1_DATA3 |
| 13 | J10.148 | SD1_DATA4 | GPIO2_IO6 | SD1_DATA4 |
| 15 | J10.150 | SD1_DATA5 | GPIO2_IO7 | SD1_DATA5 |
| 17 | J10.152 | SD1_DATA6 | GPIO2_IO8 | SD1_DATA6 |
| 18 | J10.38 | GPIO2_IO29 | GPIO5_IO18 | I2C3_SCL |
| 19 | J10.154 | SD1_DATA7 | GPIO2_IO9 | SD1_DATA7 |
| 20 | J10.48 | GPIO2_IO28 | GPIO5_IO19 | I2C3_SDA |
| 21 | J10.156 | ENET2_TD3 | GPIO4_IO16 | ENET1_RGMII_TD3 |
| 23 | J10.158 | ENET2_TD2 | GPIO4_IO17 | ENET1_RGMII_TD2 |
| 24 | J10.46 | GPIO_IO24 | GPIO2_IO24 | |
| 25 | J10.160 | ENET2_TD1 | GPIO4_IO18 | ENET1_RGMII_TD1 |
| 26 | J10.28 | WDOG_ANY | GPIO1_IO15 | - |
| 27 | J10.162 | ENET2_TD0 | GPIO4_IO19 | ENET1_RGMII_TD30
UART4_TX |
| 28 | J10.191 | GPIO_IO12 | GPIO2_IO12 | I2C8_SDA |
| 29 | J10.166 | ENET2_TXC | GPIO4_IO21 | ENET1_RGMI_TXC |
| 30 | J10.193 | GPIO_IO13 | GPIO2_IO13 | I2C8_SCL |
| 31 | J10.168 | ENET2_TX_CTL | GPIO4_IO220 | ENET1_RGMI_TX_CTL
UART4_DTR |
| 32 | J10.50 | CCM_CLK01 | GPIO3_IO26 | |
| 33 | J10.170 | ENET2_MDC | GPIO4_IO14 | ENET1_MDC
UART4_DCR |
| 34 | J10.40 | GPIO_IO07 | GPIO2_IO07 | |
| 35 | J10.172 | ENET2_MDIO | GPIO4_IO15 | ENET1_MDIO
UART4_RIN |
| 37 | J10.174 | ENET2_RX_CTL | GPIO4_IO22 | ENET1_RGMII_RX_CTL
UART4_DSR |
| 39 | J10.176 | ENET2_RD0 | GPIO4_IO24 | ENET1_RGMII_RD0
UART4_RX |
| 41 | J10.178 | ENET2_RD1 | GPIO4_IO25 | ENET1_RGMII_RD1 |
| 43 | J10.180 | ENET2_RD2 | GPIO4_IO26 | ENET1_RGMII_RD2
UART4_CTS |
| 45 | J10.182 | ENET2_RD3 | GPIO4_IO27 | ENET1_RGMII_RD3 |
| 47 | J10.184 | ENET2_RXC | GPIO4_IO23 | ENET1_RGMI_RXC |
| 49 | J10.124 | ENET1_MDC | GPIO4_IO00 | I3C2_SCL |
| 51 | J10.126 | ENET1_MDIO | GPIO4_IO01 | I3C2_SDA |
| 53 | J10.128 | SD1_CLK | GPIO3_IO08 | SD1_CLK |
| 55 | J10.130 | SD1_CMD | GPIO3_IO09 | SD1_CMD |
| 57 | J10.132 | ETH1_LED5 | - | - |
Device mappingEdit
GPIOs can be used directly on Linux kernel device driver or can be configured on the device tree.
Device usageEdit
See the GPIOs page on the DESK-MX9-L Software Manual.