User's Manual

The AXON™ Module Interface (Getting Started)

Voltage must be supplied to the AXON™ Module via pins 19 and 20 on the interface header. The

AXON™ Module regulates its voltage on board, but must be supplied a voltage between 3.3-6

Volts. The table below outlines the 20 pin interface to the AXON™ Module. The mechanical

diagram that follows indicates where pin-1 starts.

Connector

Pin out

Name

Connector

Pin out

Name

1 TDI/TDO 2 SPI_CS

3 TDI 4 IWT

5 TMS 6 UART_Data_uP

7 TCK 8 UART_Data_PC

9 GND 10 SPI_SIMO

11 RESET 12 SPI_SOMI

13 SPI_CLK 14 GPIO3

15 GPIO5 16 GPIO4

17 A0 18 IWT

19 GND 20 V_Batt

Once power is applied to pins 19 and 20, primary communication through the AXON™ Module

will take place on pins 6 and 8. These pins are the buffered UART interface to the Module. This

UART interface is 3.3-Volt logic only. To communicate with a PC and RS232 Translator must be

used on the customer’s end device. The AXON™ Programmer Board, used for prototype

development, translates the UART signaling to PC levels. Innovative Wireless Technologies’

document “AXON™-Synaptrix™ Network Interface Specification” outlines the communication

protocol utilized on the UART plus the over the air communication protocols for your peer-to-peer

and mesh network configurations.

Once the UART link has been correctly initialized, your device can then utilize the AXON™

Module to communicated information wirelessly to other AXON™ Modules. This allows the end

user to quickly setup communication links between two or multiple devices. If communication

becomes inoperable, momentarily pulling pin 11 (RESET) low, 0-Volts, will reset the AXON™

Module.