AL7020S Designer’s Guide
Doc. No. DG_7020B
Altec Electronic AG
Seite 9 / 32
Figure
3-1. S
ERIAL
P
INOUT
Table 3-1. Serial TTL Signals
PI
N
NAME
I/O TYPE
PIN
NAME
I/O TYPE
1 NC
NC
33 ~RTSTTL
Input
2 NC
NC
34 ~RXDTTL
Output
3 No
pin
35 ~TXDTTL
Input
4 No
pin
36 ~RITTL
Output
5 No
pin
37 ~DSRTTL
Output
6 No
pin
38 ~CTSTTL
Output
7 No
pin
39 ~DCDTTL
Output
8 No
pin
40 ~DTRTTL
Input
9 No
pin
41 DGND
GND
10
No pin
42
No pin
11
No pin
43
No pin
12
No pin
44
No pin
13
No pin
45
No pin
14
No pin
46
No pin
15
No pin
47
No pin
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 NC
NC
57 No
pin
26 DGND
GND
58 No
pin
27
LED GPRS
Output
59
No pin
28
SIMVCC
(option)
Output
60 No
pin
29
LED GSM
Output
61
VCC
POWER +5V
30 SIMDATA
(option)
Bi-directional
62 MICV
Input
31
SIMRST
(option)
Output
63 DGND
GND
32
SIMCLK
(option)
Output
64 SPKR
Output
SERIAL TTL
INTERFACE
POWER
AUDIO
SIM / LED
INTERFACE
Notes: Pins 3-23 and 42-60 are not installed.
DSR#
37
GSM LED
29
NC
1
SIMRST
31
GND
41
RESET#
24
NC
25
GND
63
CTS#
38
SIMVCC
28
GND
26
SIMDATA
30
LED-GPRS
27
SIMCLK
32
TXD#
35
RXD#
34
RI#
36
DTR#
40
RTS#
33
DCD#
39
VCC
61
SPKR
64
NC
2
MIC
62
Top View
