PC104-AD16
Page 4
2.2
Digital Channels
The PC/104 card features 2 digital ports with 16 digital lines each. The
direction of the digital interface can be changed in groups of eight via
software.
The digital channels are not protected! Check for correct poling to
prevent the card from being damages!
The connections for the digital lines are designed as two 26-way pin
connectors (P1, P2) on the left side of the board (see Figure 1). The pin
assignment is shown in the following table and figures on the right.
Pin 17-24 and pin 26 are not connected (n. c.).
Assignment
26-way pin connector (P1/P2)
Digital port A, bit 1..8
P1/1, P1/2, ... , P1/8
Digital port A, bit 9..16
P2/1, P2/2, ... , P2/8
Digital port B, bit 1..8
P1/9, P1/10, ... , P1/16
Digital port B, bit 9..16
P2/9, P2/10, ... , P2/16
Digital ground (DGND)
P1/25, P2/25
2.3
Power supply
Power supply of the PC104-AD16 with 5V is provided via the PC/104 system connector (P7/P8, see Figure
1). The pin assignment of the PC/104 system connector corresponds to the PC/104 standard. For further in-
formation visit
1U
www.pc104.org
.
