Acrosser AR-B1565 - Manual (Page 28)

AR-B1565/1565A User’s Guide
27
1 6
Composite Video and S-video
3.2.28 General Purpose I/O (CN2)
3.2.29 GPIO Address Select (JP7)
1
2
3
4
Users could test GPIO function under ‘Debug’ program as
follow:
C:>debug
! O 78 01H
Generally, the CN2 Pin2 will be High Level, others output pin
are Low Level.
! I 78
FC
Generally, suppose that CN2’s Pin1 and Pin3 are High Level
then will show “FC”
PIN ASSIGNMENT
1 LUMINANCE
2 CHROMINANCE
3 COMPOSITE
4 GND
5 GND
6 GND
PIN ASSIGNMENT PIN ASSIGNMENT
1 GPI0 6 GPO2
2 GPO0 7 GPI3
3 GPI1 8 GPO3
4 GPO1 9 +5V
5 GPI2 10 GND
SELECT ADDRESS SELECT ADDRESS
1-2 ON
3-4 ON
215H
(Factory Preset)
1-2 OFF
3-4 ON
216H
1-2 ON
3-4 OFF
77H
1-2 OFF
3-4 OFF
78H
1 9
2 10