User's Manual

GSM/GPRS/GNSS Module Series
MC60 Hardware Design
MC60_Hardware_Design Confidential / Released 48 / 99
The UART Port:
 TXD: Send data to RXD of DTE.
 RXD: Receive data from TXD of DTE.
 RTS: Request to send.
 CTS: Clear to send.
 DTR: DTE is ready and inform DCE (this pin can wake the module up).
 RI: Ring indicator (when there is a call, SMS or URC output, the module will inform DTE with the RI
pin).
 DCD: Data carrier detection (the validity of this pin demonstrates successful set-up of the
communication link).
The Debug Port:
 DBG_TXD: Send data to the COM port of peripheral.
 DBG_RXD: Receive data from the COM port of peripheral.
The Auxiliary UART Port:
 In all-in-one solution:
TXD_AUX: Send data to the GNSS part.
RXD_AUX: Receive data from the GNSS part.
 In stand-alone solution:
TXD_AUX: Keep open
RXD_AUX: Keep open
The GNSS UART Port
 In all-in-one solution:
GNSS_TXD: Send data to the GSM part.
GNSS_RXD: Receive data from the GSM part.
 In stand-alone solution:
GNSS_TXD: Send GNSS data to the COM port of peripheral.
GNSS_RXD: Receive GNSS data from the COM port of peripheral.
The logic levels are described in the following table.