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Table 3-1: Specifications (Continued)
SIM Card Interface
Input / Output
For more information, see
Rev 4 Nov.16
Serial Port
•
Note: If you have a DCE device, you need to use a null modem
(cross-over) cable.
•
•
•
•
•
•
page
22.
•
9-pin RS-232 serial port connects directly to most computers or
other devices with a standard serial straight-through cable
Used for connecting serial devices and configuration
Complies with the EIA RS-232D specification for DCE
equipment
Output driver levels swing from -7 VDC to +7 VDC with normal
loading
5
4
3
2
9
8
7
6
Figure 3-1: DB-9 Female Serial Connector
Table 3-2: Serial Connector Pin-out
Name
Pin
Description
DCD
1
Data Carrier Detect
TXD
2
Transmit Data
RXD
3
Receive Data
DTR
4
Data Terminal Ready
GND
5
Main GND. Connected internally to
BOARD GND
DSR
6
Data Set Ready
RTS
7
Ready To Send
CTS
8
Clear To Send
RI
9
Not connected
The MP70 has two 6-pin SIM sockets for mini-SIM (2FF) SIM
cards, operated at 1.8 V/3.3 V.
This interface is compliant with the applicable 3GPP standards
for USIM.
Configurable I/O pin on power connector
Auxiliary I/O connector with 4 I/O pins
35
1
Specifications
Type
OUT
OUT
IN
IN
GND
OUT
IN
OUT
—
4119008
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