About the module Multiplexed GPIO
ConnectCore for i.MX51 Hardware Reference Manual
49
GPIO Mode Pad On module default as
GPIO3_7 ALT4 DISPB2_SER_CLK Camera 2 Reset
ALT3 NANDF_WP_B NANDF_WP_B
GPIO3_8 ALT4 DISPB2_SER_RS USB Host Reset signal
ALT3 NANDF_RB0 NANDF_RB0
GPIO3_9 ALT3 NANDF_RB1 GPIO / User LED2
GPIO3_10 ALT3 NANDF_RB2 GPIO / User LED1
GPIO3_11 ALT3 NANDF_RB3 GPIO
GPIO3_12 ALT3 CSI1_D8 Not used
ALT0 GPIO_NAND Card Detect input SD Card
GPIO3_13 ALT3 CSI1_D9 Camera 1 Reset
GPIO3_14 ALT3 CSI1_VSYNC CSI1_VSYNC
GPIO3_15 ALT3 CSI1_HSYNC CSI1_HSYNC
GPIO3_16 ALT3 NANDF_CS0 NANDF_CS0
GPIO3_17 ALT3 NANDF_CS1 SD Card write protect
GPIO3_18 ALT3 NANDF_CS2 GPIO
GPIO3_19 ALT3 NANDF_CS3 Not used
GPIO3_20 ALT3 NANDF_CS4 GPIO
GPIO3_21 ALT3 NANDF_CS5 GPIO
GPIO3_22 ALT3 NANDF_CS6 GPIO
GPIO3_23 ALT3 NANDF_CS7 SD3_CLK
GPIO3_24 ALT3 NANDF_RDY_INT SD3_CMD#
GPIO3_25 ALT3 NANDF_D15 SD3_DATA7
GPIO3_26 ALT3 NANDF_D14 SD3_DATA6
GPIO3_27 ALT3 NANDF_D13 SD3_DATA5
GPIO3_28 ALT3 NANDF_D12 SD3_DATA4
GPIO3_29 ALT3 NANDF_D11 SD3_DATA3
GPIO3_30 ALT3 NANDF_D10 SD3_DATA2
GPIO3_31 ALT3 NANDF_D9 SD3_DATA1
GPIO4_0 ALT3 NANDF_D8 SD3_DATA0
GPIO4_1 ALT3 NANDF_D7 NANDF_D7
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