NOVA-7896/7896FW Socket 370 Celeron
TM
& Pentium III
®
Multimedia & Dual Ethernet ,IEEE1394, Embedded Board
82
Appendix E. Digital Input / Output
NOVA-7896/7896FW has 4-bit IN and 4-bit OUT built-in digital I/O
connector. An external power supply to the connector’s pin -9 and pin-10
is needed to activate the digital I/O circuit. The external power supply’s
DC output should be connected with NOVA-7896/7896FW’s power
supply at either 5V, 12V or GND to isolate NOVA-7896/7896FW main
system and the external I/O device.
In case that you cannot find any external power supply to activate the
digital I/O, the 5V or 12V of the system’s power supply can be used.
Under this condition, The digital I/O is not isolated.
•
Digital Input / Output Address
•
Read port 709 : Digital Input
Bit
Value
0 – 3
0 – F
•
Write port 708 : Digital Output
Bit
Value
4 – 7
0 – F
External Voltage Input : 0V – 20V
( CN11 Pin 10 )
External Power GND Pin
( CN11 PIN 9 )
Digital Input specifications
( If External Voltage is 5V )
Logic 0 Level : +1V Max
Logic 1 Level : +4V Min
Summary of Contents for NOVA-7896
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