AR-B1476 User
’
s Guide
3-9
3.2.7
Keyboard Connector (CN9 & J9)
CN9 is a Mini-DIN 6-pin connector. This keyboard connector is a PS/2 type keyboard connector. This connector is
also for a standard IBM-compatible keyboard with the keyboard adapter cable. J9 provides another way of
connecting a keyboard to the AR-B1476.
1 DATA
3 GND
2 Not Used
6 Not Used
4 VCC
1
2
3
4
5
6
5 CLOCK
CN9 (Front View)
Figure 3-18 CN9: Keyboard Connector
2 DATA
4 GND
1 CLOCK
5 VCC
3 Not Used
J9
Figure 3-19 J9: AUX. Keyboard Connector
3.2.8 External Speaker Header (J2)
Besides the onboard buzzer, you can use an external speaker by connecting to the J2 header.
1
2 Speaker-
3 Speaker-
4 Speaker-
1
2
3
4
Figure 3-20 J2: Speaker Header
3.2.9 Power Connector (J10)
J10 is an 8-pin power connector. You can directly connect the power supply to the onboard power connector for
stand-alone applications.
1
2
3
4
+5 VDC
GND
GND
+12 VDC
5
6
7
8
GND
-12 VDC
+5 VDC
-5 VDC
Figure 3-21 J10: Power Connector
