nanoX-BASE
User’s Manual
Page 30
CN38:
Carrier GPIO
GPIOs of CN38 come from
the NXP PCA9535 I/O Port
onboard the nanoX-BASE
(enabled/disabled by JP19).
Pin
Signal
Pin
Signal
1
GPI0
2
GPO0
3
GPI1
4
GPO1
5
GPI2
6
GPO2
7
GPI3
8
GPO3
1
2
7
8
S1: Carrier GPIO Address
SD Card Enable Switch
Default: all "On".
Pin On
Off
Description
1
Low
High
GPIO address A0
2
Low
High
GPIO address A1
3
Low
High
GPIO address A2
4
Enabled
Disabled
SD card enable
6.21
GPIO
1 2 3 4
ON DIP
CN39:
Module GPIO
GPIOs of CN39 come from
the COM Express module.
Pin
Signal
Pin
Signal
1
GPI0
2
GPO0
3
GPI1
4
GPO1
5
GPI2
6
GPO2
7
GPI3
8
GPO3
1
2
7
8
Pins 1-3 of the S1 switch set the device address of the NXP PCA9535 I/O Port.
R/W
0
1
0
0
A2
A1
A0
programmable
slave address
fixed
JP19:
Onboard GPIO
Enables/disables the GPIO onboard
the nanoX-BASE carrier.
Jumper
Status
1-2
Enable
<<<<
2-3
Disable
1
2
3
Note:
<<<< indicates default setting
