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i-modul ISDN HIX V4
Connections
2.2
Pin Layout Terminal Strip P1
Pin Type
Signal
Description
1
GND
Ground of supply voltage (ground)
2
Supply
VCC
5V DC supply voltage
3
GND
Ground of supply voltage (ground)
4
Input
TXD
Transmit signal from the terminal of the RS232 line; TTL
level
5
GND
Ground of supply voltage (ground)
6
Output
RXD
Receive signal from the RS232 line; TTL level
7
Output
ID-PIN2
Reserved for 2. ID PIN
8
Input
RTS~
Request to Send; TTL level (RS232 signal)
9
Output
ID-PIN1
VCC (internal pull-up 10 kOhm)
10
Output
CTS~
Clear To Send; TTL level (RS232 signal)
11
Input
RESET~
RESET, TTL level, tmin = 3 s
12
Input
DTR~
Data Terminal Ready; TTL level (RS232 signal)
13 Output
OH~
Off
Hook
14
Output
DCD~
Data Carrier Detect; TTL level (RS232 signal)
15
Output
RI~
Ring Signal TTL level (RS232 signal)
16
Output
DSR~
Data Set Ready; TTL level (RS232 signal)
17
Output
UA
Switch output; TTL level
18
Input
UE
Alarm input; TTL level
19
Output
UA2
Switch output 2; TTL level
20
Input
UE2
Alarm input 2; TTL level
Table 4: Terminal strip connections description, terminal strip P1
The tilde "~" behind the signal description indicates that this signal is
"low active".
2.3
Pin Layout Terminal Strip P2
Pin Type
Signal
Description
1
Input
SRB / RX-
RJ45-Pin 5
2
Output
STB / TX-
RJ45-Pin 6
3
Input
SRA / RX+
RJ45-Pin 4
4
Output
STA / TX+
RJ45-Pin 3
5 Output
Rx
(BRA
ps)
Not connected
6 Output
Tx
(BRA
ps)
Not connected
Table 5: Terminal strip connections description, terminal strip P2
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