Introduction
English, Revision 01, Date: 27.01.2014
4
1.2
Block schematic
The following picture shows the function groups of the HG 76342-A module.
Figure 2
Block schematic
The main component of the radio modem is a 32bit network processor that controls all
the different functions.
LE
D
’s
Processor
32bit /
250MHz
RS
232
opt.
RS485
RS422
2 Port
Switch
MINI-PCI
MINI-PCI
RF Hardware
802.11 a/b/g
2Mbyte –
serial Flash
16 Mbyte
DDR-RAM
Watchdog
TxD
RxD
DTR
3
2
7
8
4
6
DSR
RTS
CTS
SE
R
1
1
9
DCD
RI
5
RJ45
or
M12
TD-
TD+
RD-
RD+
Eth.
MAC
DC/DC
Converter
32bit
Reset
M II
PH
Y
1
PH
Y
2
6
3
2
1
LA
N
1
6
3
2
1
LA
N
2
TD-
TD+
RD-
RD+
POE
802.3af
UA
R
T
1
US
B
REL
IN
U
A
R
T
2
A1
A2
Power
WLAN
LAN1
LAN2
SER1
Reset
MEM
WD out
I²
C
I²
C
PCI
RJ45
or
M12
SUB D9
HG 76342
5
3
1
4
NO
AUX
2
REL
NC
C
PW
-
+
IN
+
-
UB = 10-72V
<= 5W
+
-
Power
NC
US
B
5V
10 – 72 V
Max 5W
Power