3.3V support for GPIO and ALT functions

Technical Support
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1

Does the following pins in verdin imx8mplus SOM support 3.3V
Pin no Signal name Ball name
15 PWM_1 SPDIF_EXT_CLK
17 GPIO_9_DSI SAI2_TXC
19 PWM_3_DSI SAI5_RXC
21 GPIO_10_DSI SAI3_RXFS

129 UART_1_RXD UART1_RXD
131 UART_1_TXD UART1_TXD

12 I2C_1_SDA I2C4_SDA
14 I2C_1_SCL I2C4_SCL
16 PWM_2 GPIO1_IO11

196 SPI_1_CLK ECSPI1_SCLK
198 SPI_1_MISO ECSPI1_MISO
200 SPI_1_MOSI ECSPI1_MOSI
202 SPI_1_CS ECSPI1_SS0

216 GPIO_5_CSI GPIO1_IO07
218 GPIO_6_CSI GPIO1_IO08

2

The Verdin family of SoMs supports a 1.8V I/O voltage level only. Some pins like SD card interface, CTRL_RESET_MOCI# and CTRL_FORCE_OFF_MOCI# are 3.3V tolerant. Please check the Verdin iMX8M Plus V1.1 Datasheet

3

Yes. After seeing the Dhalia carrier board, i realized that all GPIO’s are 1.8V

Thanks