AVT MAGIC AC1 XIP/XIP RM, Hardware & Software Manual

Page: 78 / 176

PAGE 78
W i n d o w s P C S o f t w a r e
TT Pin as Output
FIG. 50 TTL-PIN AS OUTPUT
If an TTL Pin is configured as an
Output
, the event is signalled when the
voltage at the TTL Pin changes from 0V to +5V.
Under
Positive edge
you can select the following
Function Codes
:
–
Fixed Low (0V)
: The TTL Pin is fixed to 0V.
–
Fixed High (5V)
: The TTL Pin is fixed to +5V.
–
PC Controlled
: Special function for projects.
–
Connection State
: Via this function you can signal the connection state of
a line. Please select the desired connection state under
Connection State.
The following options are available:
–
Disconnect
–
Call Out
–
Call In
–
Connect
–
Call Setup
Under
Line
(only in the operation mode ISDN ) you can select the line
which connection state you want to signal. Besides line
1
and line
2
you
can monitor the connection status of both lines if you select
All
. As soon as
one of the two lines meets the criteria, the signal is triggered at the TTL Pin.
–
Information Base Entry
: Special function for projects.
ATTENTION Please note that the maximum switching current is 10 mA and the maximum
switching voltage is 5Vper TTL output.
!