SENA Parani-ESD100V2-110V2 - Manual (Page 35)

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Appendix A: Connections
A.1. Pin Assignment
A.1.1. Parani-ESD100V2/110V2
7 8 9 10 11 12
2 3 4 5 6 1
GND
GND Pairing
VDD RTS TXD RXD CTS
DTR DCD DSR RST
Figure A-1 Pin Assignment of Parani-ESD
Table A-1. Pin Assignment of Parani-ESD
Pin # Signal Direction Description Signal Level
1 GND - Power Ground Ground
2 TxD Output UART Data Output TTL
3 RxD Input UART Data Input TTL
4 RTS Output UART Ready to Send TTL
5 CTS Input UART Clear to Send TTL
6 VDD Input DC Input (3.0~3.3V) Power
7 Pairing Input Pairing Input (Active Low) TTL
8 DCD Output Bluetooth Connect Detect (Active Low) TTL
9 DSR Input Data Set Ready TTL
10 DTR Output Data Terminal Ready TTL
11 RST Input Reset (Active Low) TTL
12 GND - Power Ground Ground
A.1.2. DCD Signal (Status: Bluetooth Connect Detect)
Status of Bluetooth connection will be delivered to Host PC via DCD line. When Bluetooth connection
is made, DCD signal will be to low.