Falcom GmbH FOX User Manual
FOX H
ARDWARE
M
ANUAL
- P
RELIMINARY
-
V
ERSION
1.0.0
5 FOX APPLICATION INTERFACE
5.1 Power supply
The power supply for the FOX unit has to be a single voltage source of V
+IN
= +10.8
V...+35.0 VDC. The operating voltage (V
+IN
) has to be permanently applied to the
FOX unit and able to provide sufficient current of up to 1.9 A.
The operating voltage (V
+IN
and GND) is protected
against voltage spikes and reverse
polarity, but not
against overvoltage.
NOTE: Operating voltage range must never be exceeded; care must be taken in
order to fulfill min/max voltage requirements.
5.1.1 Power supply pins (1 and 2) on the 8-pin connector
One +IN pin on the 8-pin connector is dedicated to connect the supply voltage,
and the GND pin for grounding.
Both +IN and GND pins serve for charging the internal Li-Polymer battery (option)
and powering the FOX device. FOX has
and the GND pin for grounding.
Both +IN and GND pins serve for charging the internal Li-Polymer battery (option)
and powering the FOX device. FOX has
an automatic power ON-function when
external power is applied. The power supply for the FOX is capable of utilizing
current ranging from V
current ranging from V
+IN
= +10.8 V ... +35.0 VDC designed for automotive
application.
Signal name
I/O
Parameter
Description
+IN
I
+10.8 V...+35.0 VDC. The
operating voltage must never
be exceeded.
operating voltage must never
be exceeded.
Positive operating voltage.
For security reason, it is recommended to integrate
externally a 2A fuse link between interconnection plug (8-
pin connector) and d.c.-power source (see Fig 14).
For security reason, it is recommended to integrate
externally a 2A fuse link between interconnection plug (8-
pin connector) and d.c.-power source (see Fig 14).
GND
-
0 V
Ground (should be isolated from the vehicle Grounds)
5.1.2 Automatic shutdown
Automatic shutdown takes effect if:
•
under voltage is detected when battery level runs low and external power
supply is disconnected .
The automatic shutdown procedure is equivalent to the initiated power-down,
i.e. FOX logs off from the network and the software enters a secure state
avoiding loss of data.
i.e. FOX logs off from the network and the software enters a secure state
avoiding loss of data.
5.2 Determining the External Equipment Type
Before you connect the serial port pins on the aforementioned terminals (DCE units)
to external equipment, you need to determine if the external hardware serial ports
are configured as DTE or DCE.
FOX is designed for use as a DCE device. Based on the aforementioned
conventions for DCE-DTE connections, it communicates with the customer
application (DTE) using the following signals:
to external equipment, you need to determine if the external hardware serial ports
are configured as DTE or DCE.
FOX is designed for use as a DCE device. Based on the aforementioned
conventions for DCE-DTE connections, it communicates with the customer
application (DTE) using the following signals:
FOX Terminal (DCE)
to
Application (DTE)
RxA
<----------
TXD
TxA
---------->
RXD
Table 4:
The signalling definitions between DTE and DCE.
This confidential document is a property of FALCOM and may not be copied or circulated without previous permission.
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