User's Manual

GE864
GE864GE864
GE864-
--
-QUAD Automotive V2 Hardware User Guide
QUAD Automotive V2 Hardware User GuideQUAD Automotive V2 Hardware User Guide
QUAD Automotive V2 Hardware User Guide
1vv0300840 Rev.3 2010-04-08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 37 of 71
The signals of the GE864-QUAD Automotive V2 serial port are:
RS232
RS232 RS232
RS232
Pin
Pin Pin
Pin
Number
NumberNumber
Number
Signal
SignalSignal
Signal GE864
GE864GE864
GE864-
--
-
QUAD
QUAD QUAD
QUAD
Automotive
Automotive Automotive
Automotive
V2
V2V2
V2 Pad
Pad Pad
Pad
Number
NumberNumber
Number
Name
NameName
Name Usage
UsageUsage
Usage
1 DCD - dcd_uart D9 Data Carrier Detect Output from the GE864-QUAD Automotive V2 that
indicates the carrier presence
2 RXD - tx_uart H8 Transmit line *see Note Output transmit line of GE864-QUAD Automotive V2
UART
3 TXD - rx_uart E7 Receive line *see Note Input receive of the GE864-QUAD Automotive V2
UART
4 DTR - dtr_uart B7 Data Terminal Ready Input to the GE864-QUAD Automotive V2 that
controls the DTE READY condition
5 GND A1,F1,H1
L1, H2, L2,
J3, K3….
Ground ground
6 DSR - dsr_uart E11 Data Set Ready Output from the GE864-QUAD Automotive V2 that
indicates the module is ready
7 RTS -rts_uart F7 Request to Send Input to the GE864-QUAD Automotive V2 that
controls the Hardware flow control
8 CTS - cts_uart F6 Clear to Send Output from the GE864-QUAD Automotive V2 that
controls the Hardware flow control
9 RI - ri_uart B6 Ring Indicator Output from the GE864-QUAD Automotive V2 that
indicates the incoming call condition
NOTE:
NOTE: NOTE:
NOTE:
According to V.24, RX/TX signal names are referred to the application side, therefore on
the GE864 side these signal are on the opposite direction: TXD on the application side
will be connected to the receive line (here named TXD/ rx_uart ) of the GE864-QUAD
Automotive V2 serial port and viceversa for RX.
TIP:
TIP: TIP:
TIP:
For a minimum implementation, only the TXD and RXD lines can be connected, the
other lines can be left open provided a software flow control is implemented.