SENA Promi-ESD02 - Manual (Page 25)

Promi-ESD User Manual – Connections 25
Copyright © 2006 Sena Technologies, Inc. All rights reserved.
 Pin Assignment (ESD02)
1
2
3
4
8
7
6
5
GND
VDD
Status
RST
RXD
TXD
RTS
CTS
Antenna
Pin no. Pin name Direction Description Signal Level
1 GND I Power Ground Ground
2 VDD I DC input (3.0 ~ 3.3V) Power
3 Status O Bluetooth Connect
Detect (Active High)
TTL
4 RST I Reset (Active Low) TTL
5 CTS I UART Clear to Send TTL
6 RTS O UART Ready to Send TTL
7 TXD O UART data out TTL
8 RXD I UART data input TTL
RTS/CTS : RTS and CTS signal will be used for Hardware Flow Control of
Promi-ESD.
Promi-ESD RTS  CTS
Promi-ESD CTS  RTS
If you are not using Hardware flow control (handshaking), please bridge CTS and
GND to disable the function.
DCD : Status of Bluetooth connection will be delivered to Host PC via DCD line.
When Bluetooth connection is made, DCD signal will be in state OFF. For
disconnection of Bluetooth, DCD signal will become state ON.