Aim ANET1553 Series, Руководство пользователя

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4. Structure of the ANET1553
ANET1553-x
User’s Manual
34
The following figure shows the MILBus output amplitude (on a 70
Ω Bus Termination)
over the different amplitude settings. The Amplitude can be controlled by the user via
the Software API Function (ApiCmd….).
Figure 4.4-2 Diagram MILBus output amplitude versus amplitude settings
The X-Axis (
→) is the setting of the voltage (0…255), whereas the Y-Axis (↑) is the
voltage amplitude [V
PP
] of the MILBus (0…20V
PP
). This are typical values, the exact
settings might differ.
4.5 ASP Section
The low power onboard Application Support Processor (ASP) is based on a
System-On-Chip (SOC) hardware and running under an embedded LINUX Operating
System. The SOC hardware offers a built-in Ethernet interface, which is used for the
implementation of the host connection via a Standard Ethernet RJ-45 connector.
Furthermore, the also SOC built-in USB interface has been made available to the user
for mounting external mass data storage devices or e.g. a WLAN stick for wireless.
4.6 Discrete I/Os
The ANET1553 module provides eight user programmable Discrete-I/O signals.
Discrete input signals are always active whereas the discrete output signals are per
default inactive. An open collector circuitry is used for the discrete output with
approximately 4V provided by default. An external voltage from 0 to 35V can be
supplied externally for switching higher voltages.
Note:
The discrete outputs don’t provide a series resistor for over current protection.
In case a discrete input is used, make sure that the output-mode for that discrete is
disabled, before connecting an external voltage, otherwise a high short circuit current to
GND can damage the output transistor.
0
5
10
15
20
0 50 100 150 200 250