
B Initial Configuration State of Expansion
Interfaces
The initial states of the signal pins and pad configuration of the CON9, CON11 (Armadillo-440 only) and CON14
expansion interfaces are shown below.
B.1 Signal State of Expansion Interfaces (After i.MX257 Reset)
Connector
Pin
Number
Signal Name
Signal State After Reset
On-
board
Pull-up
I/O
Pin
State
Open
Drain
Pull/
Keeper
CON14
3
EXT_IO22
In
-
Disable
100k製PD
[1]
-
4
EXT_IO23
In
-
Disable
Disable
-
CON9
1
EXT_IO0
Out
Low
Disable
Disable
-
2
EXT_IO1
Out
Low
Disable
Disable
-
3
EXT_IO2
In
-
Disable
100k製PU
[1]
-
4
EXT_IO3
In
-
Disable
Keeper
-
5
EXT_IO4
Out
Low
Disable
100k製PU
-
6
EXT_IO5
In
-
Disable
Keeper
-
11
EXT_IO6
In
-
Disable
100k製PU
-
12
EXT_IO7
In
-
Disable
Keeper
-
13
EXT_IO8
In
-
Disable
100k製PU
-
14
EXT_IO9
In
-
Disable
Keeper
-
15
EXT_IO10
In
-
Disable
Keeper
-
16
EXT_IO11
In
-
Disable
Keeper
-
17
EXT_IO12
In
-
Disable
Keeper
-
18
EXT_IO13
In
-
Disable
Keeper
-
21
EXT_IO14
Out
Low
Disable
Disable
-
22
EXT_IO15
In
-
Disable
Keeper
-
23
EXT_IO16
In
-
Disable
Keeper
-
24
EXT_IO17
In
-
Disable
Keeper
-
25
EXT_IO18
In
-
Disable
100k製PU
-
26
EXT_IO19
In
-
Disable
100k製PU
-
27
EXT_IO20
Out
Low
Disable
Disable
-
28
EXT_IO21
In
-
Disable
Disable
-
Armadillo-400 Series Hardware Manual
Initial Configuration State of Expansion Interfaces
53