Altec ISDN Socket Modem AL5068S-3V - Manual (Page 11)

AL5068S Designer’s Guide
No. AL5068S-E00-105 Altec Electronic AG Seite 11 / 25
Figure 3.1 – Serial TTL Pinout
Table 3.1. Serial TTL Signals
Pin Name I/O Type Pin Name I/O Type
1 TX + S
0
BUS Standard 33 ~RTSTTL Input
2 TX - S
0
BUS Standard 34 ~RXDTTL Output
3 RX + S
0
BUS Standard 35 ~TXDTTL Input
4 RX - S
0
BUS Standard 36 ~RITTL Output
5 No pin 37 ~DSRTTL Output
6 TX+ S
0
BUS S2 option 38 ~CTSTTL Output
7 RX+ S
0
BUS S2 option 39 ~DCDTTL Output
8 RX- S
0
BUS S2 option 40 ~DTRTTL Input
9 TX- S
0
BUS S2 option 41 GND Ground
10 No pin 42 NC
11 No pin 43 NC
12 No pin 44 DU IOM-2 Bus Optional
13 No pin 45 DD IOM-2 Bus Optional
14 No pin 46 DCL IOM-2 Bus Optional
15 No pin 47 FSC IOM-2 Bus Optional
16 No pin 48 No pin
17 No pin 49 No pin
18 No pin 50 No pin
19 No pin 51 No pin
20 No pin 52 No pin
21 No pin 53 No pin
22 No pin 54 No pin
23 No pin 55 No pin
24 ~RESET Input 56 No pin
25 No pin 57 No pin
26 GND Ground 58 No pin
27 NC NC 59 No pin
28 NC NC 60 No pin
29 DCDIND LED Driver Output 61 VCC Power
30 RXDIND LED Driver Output 62 NC NC
31 DTRIND LED Driver Output 63 GND Ground
32 TXDIND LED Driver Output 64 NC NC
Top View
NC
42
TXDIND
32
DTR#
40
RX +
7
NC
64
NC
62
RESET#
24
DU
44
OPTIONAL
TXD#
35
RTS#
33
NC
27
DCL
46
DSR#
37
DCDIND
29
DCD#
39
DTRIND
31
GND
41
NC
25
RX -
8
GND
63
TX -
9
NC
43
TX +
6
VCC
61
RXD#
34
GND
26
DD
45
NC
28
RI#
36
FSC
47
CTS#
38
RXDIND
30
NC
25
DCD#
39
GND
41
DU
44
DTRIND
31
DSR#
37
TXD#
35
RX -
4
OPTIONAL
DCDIND
29
RTS#
33
NC
27
RESET#
24
NC
62
DD
45
TX +
1
NC
43
NC
64
NC
42
TXDIND
32
CTS#
38
FSC
47
RXDIND
30
RI#
36
DTR#
40
RXD#
34
NC
28
RX +
3
DCL
46
GND
26
VCC
61
TX -
2
GND
63
AL5068S
AL5068S2