Quectel UMTS&LTE EVB - Page 32

UMTS/HSPA/LTE Module Series
UMTS&LTE EVB User Guide
UMTS&LTE_EVB_User_Guide Confidential / Released 31 / 44
Table 8: Pin Definition of J401
1 2 3 4
5
6 7 8 9
Figure 26: Pin Assignments of J402
Table 9: Pin Definition of J402
Pin No.
Signal Name
I/O
Description
1
RS232_DCD
DO
Data carrier detection
2
RS232_RXD
DI
Receive data
3
RS232_TXD
DO
Transmit data
4
RS232_DTR
DI
Data terminal ready
5
RS232_GND
/
GND
6
NC
/
Not connected
7
RS232_RTS
DI
Request to send
8
RS232_CTS
DO
Clear to send
9
RS232_RI
DO
Ring indicator
Pin No.
Signal Name
I/O
Description
2
RS232_RXD
DI
Receive Data
3
RS232_TXD
DO
Transmit data
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