Digi ConnectCore Hardware Reference Manual page 105

About the development board
The voltage level of the data, address and control signals provided by the module is +1.8V. A level
shifter is provided on the development board to buffer and change the voltage level of most peripheral
application signals on this header to +3.3V.
The Data bus signals D0 - D15 are connected to the i.MX51 data bus signals D16 - D31.
The Address bus signals A0 - A9 are connected to the i.MX51 data/address bus signals DA0 - DA9.
The BE2# signal is connected to the i.MX51 byte enable 2 (D16 - D23).
The BE3# signal is connected to the i.MX51 byte enable 3 (D24 - D31).
ConnectCore for i.MX51 Hardware Reference Manual
Pin Signal
3 D1
5 D3
7 D4
9 D6
11 GND
13 D9
15 D11
17 D12
19 D14
21 GND
23 GND
25 +3.3V
27 A1
29 A3
31 A4
33 A6
35 GND
37 A9
39 CS0#
41 WE#
2
43 I2C _SCL/GPIO1_2 44
45 +3.3V
47 BE2#
49 BCLK
Peripheral application header
Pin Signal
4 D2
6 GND
8 D5
10 D7
12 D8
14 D10
16 GND
18 D13
20 D15
22 8-bit / 16-bit (default)
24 +3.3V
26 A0
28 A2
30 GND
32 A5
34 A7
36 A8
38 GND
2
40 I2C _SDA/GPIO1_3
42 OE#
GPIO3_2
46 +3.3V
48 BE3#
50 GND
105