AL7020S Designer’s Guide
Doc. No. DG_7020B Altec Electronic AG Seite 9 / 32
Figure
3-1. SERIAL PINOUT
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
UDIO
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
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