User`s guide

6 SPECIFICATIONS
6.1 PCI-DIO24
Digital Input / Output
Digital Type (Digital I/O connector) 82C55
Configuration 2 banks of 8, 2 banks of 4, program-
mable by bank as input or output
Number of channels 24 I/O
Output High 3.7 volts min @ -2.5mA
Output Low 0.4 volts max @ 2.5mA
Input High 2.2 volts min, VCC + .3 volts abso-
lute max
Input Low 0.8 volts max, -0.3 volts absolute
min
Power-up / reset state Input mode (high impedance)
Interrupts INTA# - mapped to IRQn via PCI
BIOS at boot-time
Interrupt enable External source - polarity program-
mable through PCI9050-1.
Interrupt sources External source, polarity program-
mable through PCI9050-1; 1 =
active high, 0 = active low
Power consumption
+5V Operating 240 typical, 350 max
+12V and -12V Not used, but provided to the user
at the I/O connector
Environmental
Operating temperature range 0 to 50 °C
Storage temperature range -20 to 70 °C
Humidity 0 to 90% non-condensing
16
3 I/O CONNECTIONS
3.1 CABLES AND SCREW TERMINAL BOARDS
The PCI-DIO24 connector is accessible through the computer’s expansion bracket.
The connector is a standard 37 pin male connector. The I/O connections can be
brought out to easy to use screw terminals by purchasing a CFF37-series cable and a
CIO-MINI37 screw terminal accessory board.
A mating female connector may be purchased from Radio Shack and most other elec-
tronic supply outlets.
3.2 CONNECTOR DIAGRAM - PCI-DI O24, -24H &
-
24H/CTR3
The PCI-DIO24 I/O connector is a 37
pin D type connector accessible from
the rear of the PC through the expan-
sion backplate. The signals available
are direct connections to an 82C55
digital I/O chip as well as the PC’s
internal power supplies. The pin-out is
identical to the CIO-DIO24 except
that -5VDC is not brought out.
The PCI-DIO24H/CTR3 adds the sig-
nals for an 82C55 counter chip in
place of the PC power connections.
The connector accepts female 37 D
type connectors, such as those on the
C37FF-2, 2 foot cable.
If frequent changes to signal connec-
tions or signal conditioning is
required, please refer to the informa-
tion on the PCI-MINI37 or PCI-
SPADE50 screw terminal boards.
5
GND 19
+5V 18
GND 17
+12V 16
GND 15
-12V 14
GND 13
NC 12
GND 11
PORT B 0 10
PORT B 1 9
PORT B 2 8
PORT B 3 7
PORT B 4 6
PORT B 5 5
PORT B 6 4
PORT B 7 3
IR ENABLE 2
IR INPUT 1
37 PORT A 0
36 PORT A 1
35 PORT A 2
34 PORT A 3
33 PORT A 4
32 PORT A 5
31 PORT A 6
30 PORT A 7
29 PORT C 0
28 PORT C 1
27 PORT C 2
26 PORT C 3
25 PORT C 4
24 PORT C 5
23 PORT C 6
22 PORT C 7
21 GND
20 +5V
24/CTR3 24 & 24H
CLK 0
GATE 0
OUT 0
CLK 1
GATE 1
OUT 1
CLK 2
GATE 2
OUT 2
NC - NO CONNECTION