ConnectCore
f or
i.MX51
©
2011
Digi
International,
Inc.
74
Digital I/O Connector, X45
The development board provides a 3.81mm green terminal block, X45, for accessing eight on
chip digital GPIOs of the i.MX51 CPU.
On the development board, GPIO3_6 is connected to USER_KEY1. When using this signal as
digital I/O, the USER_KEY1 should not be used.
Note:
The digital I/O interface is not protected against ESD, over voltage or inverse polarity.
Care must be taken when using these signals.
Pin
Signal
Voltage Level
1
GPIO3_11/SPI2_MISO/NANDF_RB3
+3.15V
2
GPIO3_18/NANDF_CS2#
+3.15V
3
GPIO3_9/SPI2_RDY/USER_LED2/NANDF_RB1
+3.15V
4
GPIO3_10/SPI2_SCLK/USER_LED1/NANDF_RB2
+3.15V
5
GPIO3_20/NANDF_CS4#
+3.15V
6
GPIO3_21/NANDF_CS5#
+3.15V
7
GPIO3_22/NANDF_CS6#
+3.15V
8
GPIO3_6/DISPB2_SER_DIO/USER_KEY1
+2.775
9
GND
0V
electronic components distributor