User's Manual Part 1

TDL 450i Intergrator’s Guide 10
Pin Name Description
7 GND GROUND FOR SIGNAL AND POWER
8 DO NOT USE FACTORY USE ONLY, PLEASE LEAVE NO CONNECTION
9 GND GROUND FOR SIGNAL AND POWER
10 DO NOT USE FACTORY USE ONLY, PLEASE LEAVE NO CONNECTION
11 CONFIG
I/O TO FORCE RADIO SWITCH BETWEEN OPERATING MODE AND
CONFIGURATION MODE
12 DO NOT USE FACTORY USE ONLY, PLEASE LEAVE NO CONNECTION
13 DO NOT USE FACTORY USE ONLY, PLEASE LEAVE NO CONNECTION
14 RX RX DATA, DTE SERIAL PORT, 3V CMOS (3.3V COMPATIBLE)
15 DO NOT USE FACTORY USE ONLY, PLEASE LEAVE NO CONNECTION
16 DO NOT USE FACTORY USE ONLY, PLEASE LEAVE NO CONNECTION
17 DO NOT USE FACTORY USE ONLY, PLEASE LEAVE NO CONNECTION
18 VCC POWER IN
19 GND GROUND FOR SIGNAL AND POWER
20 GND GROUND FOR SIGNAL AND POWER
21 GND GROUND FOR SIGNAL AND POWER
22 GND GROUND FOR SIGNAL AND POWER
23 VCC POWER IN
24 VCC POWER IN
25 VCC POWER IN
26 VCC POWER IN
27 VCC POWER IN
28 VCC POWER IN
29 POWER POWER DOWN RADIO
30 GND GROUND FOR SIGNAL AND POWER
TX and RX Pins
Pin 3 is used by the TDL 450i module to received data from an external device (a PC, GPS receiver,
weather sensor, etc). Pin 14 is used to transmit data to the external device. The external device is
transmitting data to the TDL 450i on Pin 3, so according to the DTE naming convention, Pin 3 is
called the “TX Data” pin. The external device receives data from the TDL 450i’s Pin 14 so this is called
the “RX Data” pin.
Pin Orientation