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ConnectCore ? f or ? i .M X 5 1 ?
Multiplexed GPIO
GPIO Multiplexing Table
The ConnectCore for i.MX51 has four GPIO banks. Each bank provides 32 bidirectional general
purpose input and output signals.
The GPIO pins are multiplexed with other functions on the module. For each pin there are up
to 8 muxing options (called ALT modes). By default all GPIO pins are configured to their
respective GPIO signals. Since different modules require different pin settings (like pull up,
keeper, etc) the i.MX51 has an IOMUX controller to configure the pin settings.
The table below shows the ALT mode for each GPIO signal, the name of the Pad and the
default use on the module. For a detailed description of all the muxing options for each pin,
refer to the i.MX51 Hardware Reference Manual.
GPIO
GPIO1_0
GPIO1_1
GPIO1_2
GPIO1_3
GPIO1_4
GPIO1_5
GPIO1_6
GPIO1_7
GPIO1_8
GPIO1_9
GPIO1_10
GPIO1_11
GPIO1_12
GPIO1_13
GPIO1_14
GPIO1_15
GPIO1_16
GPIO1_17
GPIO1_18
GPIO1_19
GPIO1_20
GPIO1_21
? ? 2011 ? Digi ? International, ? Inc.
Mode
ALT1
ALT1
ALT0
ALT0
ALT0
ALT0
ALT0
ALT0
ALT0
ALT0
ALT7
ALT2
ALT2
ALT2
ALT2
ALT2
ALT2
ALT2
ALT2
ALT5
ALT3
ALT3
Pad
GPIO1_0
GPIO1_1
GPIO1_2
GPIO1_3
GPIO1_4
GPIO1_5
GPIO1_6
GPIO1_7
GPIO1_8
GPIO1_9
DISP2_DAT11
USBH1_DATA0
USBH1_DATA1
USBH1_DATA2
USBH1_DATA3
USBH1_DATA4
USBH1_DATA5
USBH1_DATA6
USBH1_DATA7
DISP2_DAT6
UART2_RXD
UART2_TXD
On module default as
HDMI Interrupt
User Button 2
I2C2_SCL
I2C2_SDA
Watchdog reset
MC13892 Interrupt
Accelerometer Interrupt 2
Accelerometer Interrupt 1
USB Power enable
Ethernet 2 Interrupt
Ethernet 1
USB Host
USB Host
USB Host
USB Host
USB Host
USB Host
USB Host
USB Host
Ethernet 1
UART2_RXD
UART2_TXD
???? ? 35
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