M10 Hardware Design
M10_HD_V3.0 - 46 -
The following picture is an example of connection between module and PC. A RS_232 level
shifter IC or circuit must be inserted between module and PC, since these three UART ports do
not support the RS_232 level, while support the CMOS level only.
9
8
7
6
5
4
3
2
1
15
14
8
9
11
12
5
7
6
10
4
26
2
27
13
18
20
21
16
17
19
22
23
24
3
1
25
28
GND
TO PC serial port
SP3238
3V
GND
GND
T5OUT
/SHUTDOWN
V+
GND
V-
VCC
T4OUT
T2OUT
T3OUT
T1OUT
R3IN
R2IN
R1IN
/STATUS
3V
ONLINE
R1OUT
R2OUT
R3OUT
/R1OUT
GND
T5IN
T4IN
T3IN
T2IN
T1IN
C2+
C2-
C1-
C1+
MODULE
RXD
DTR
RTS
RI
CTS
TXD
DCD
Figure 26: RS232 level match circuit
3.9. Audio interfaces
The module provides two analogy input channels and two analogy output channels.
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