Upgrade
Update port for video chipset
GPIO
CON4: general input and output with power supply
PIN1-6 from left to right have the following definition.
NO.
DEFINATION DESCRIPTION
1
GND
GND
2
3.3V
3.3V
3
GPIO
GPIOX0
4
GPIO
GPIOX1
5
GPIO
GPIOX2
6
GPIO
GPIOX3
Serial port
3.5mm RS-232 Serial Port
IR
BrightSign infrared remote-control input
SPK L
Amplified audio L output to 3W speaker
SPK R
Amplified audio R output to 3W speaker