Auxiliary I/O Interface; Matrox Opto-Coupling Module - Matrox 4Sight-II Installation And Hardware Reference

Auxiliary I/O interface

• 16 independent auxiliary I/O bits, used to connect LVTTL devices.
• Both input and output low-voltage TTL (LVTTL) signals have interrupt
generation capabilities.
• Electrical specifications:
- Input signals:
Voltage range, logical "1": 2.0 - 5.5 V.
➠
Voltage range, logical "0": 0 - 0.8 V.
➠
- Output signals:
Minimum voltage, logical "1": 2.4 V.
➠
Maximum voltage, logical "0": 0.5
➠

Matrox opto-coupling module

• Connects non-LVTTL devices to the auxiliary I/O interface.
• Input signal electrical specifications
Input signal characteristic
1
Forward voltage, V
f
Rise-time (non-saturated), t
3
Fall-time, t
f
1. With I = 20 mA.
f
2. With I = 2 mA, V = 2 V, R
c ce
3. With I = 2 mA, V = 2 V, R
c ce
1. Note that the Matrox opto-coupling module integrates a 2490 Ω resistor on each
input pin.
1
:
2
r
Ω
= 100 .
L
Ω
= 100 .
L
Auxiliary I/O interface
Typical Maximum
1.2 V 1.5 V
2.4 µs 18 µs
2.4 µs 18 µs
155