ME910C1 HW User Guide
1VV0301351 Rev.8 Page 52 of 99 2018-09-28
RS232
Pin
Signal PAD Name Usage
1 C109/DCD N14 Data Carrier Detect
Output from the ME910C1 that
indicates the carrier presence
2 C104/RXD M15
Transmit line *see
Note
Output transmit line of ME910C1
UART
3 C103/TXD N15
Receive line *see
Note
Input receive of the ME910C1
UART
4 C108/DTR M14 Data Terminal Ready
Input to the ME910C1 that
controls the DTE READY
condition
6 C107/DSR P14 Data Set Ready
Output from the ME910C1 that
indicates the module is ready
7 C106/CTS P15 Clear to Send
Output from the ME910C1 that
controls the Hardware flow control
8 C105/RTS L14 Request to Send
Input to the ME910C1 that
controls the Hardware flow control
9 C125/RING R14 Ring Indicator
Output from the ME910C1 that
indicates the incoming call
condition