Acrosser AR-B1690 - Manual (Page 19)

AR-B1690 User’s Guide
19
2.2.27 D.O.C Socket (U1)
DOC: 32 pin Disk-on-chip Socket
2.2.28 DOC Address Select (J11)
The J11 jumper is used to choose DOC address.
1
2
J11
JUMPER ADDRESS NOTE
ON D000:0000 Factory Preset
OFF D200:0000
2.2.29 GPIO Connector (J2)
Users could test GPIO function under ‘Debug’ program as follow:
10
9
2
1
1.GPI 3
3.GPI 2
5.GPI 1
7.GPI 0
2.GPO 3 (MSB)
4.GPO 2
6.GPO 1
9.GND
8.GPO 0 (LSB)
10.VCC
! Users could test GPIO function under ‘Debug’ program as follow:
C:>debug
# O 215 01H
Generally, the J2’s Pin8 will be High Level, others output pin are Low Level.
# I 215
FC
Generally, suppose that J2’s Pin1 and Pin3 are High Level then will show “FC”