I/O Extender Bring-Up - Elatec TWN4 MultiTech Nano Technical Handbook

2. Getting Started

2.2. I/O Extender Bring-Up

Ensure both the Development Board and the I/O Extender are disconnected from Power. Attach the I/O
Extender to the Expansion Slot of the Development Board as shown on Figure 2.2. Ensure correct align-
ment of the I/O Extender; LCD Display should be partly overshadowing the SAM2 Slot of the Development
Board.
Establish connection between the PC and the Development Board via either USB or UART protocol. En-
sure 5V power is supplied to the Development Board. Please see Development Kit Technical Handbook
for instructions. The I/O Extender can be powered from either the Development Board, or via an external
DC Source. Depending on Application, please choose one of the 2 options listed in Table 2.1. Refer to
Figure 2.1 for assistance locating the components on the board.
Power Option Instructions
DevBoard Short Jumper J2. Make sure no external supply is connected to the I/O Extender.
If using Generic port on I/O Extender, connect a Jumper on J1 (2 pins closest to LCD
Display). Otherwise leave it open.
External Leave Jumper J2 open. Connect external supply to the I/O Extender
(DC Range: 7V - 28V).
If using Generic port on I/O Extender, connect a Jumper on J1 (2 pins farthest from
LCD Display). Otherwise leave it open.
Figure 2.2.: Connecting I/O Extender to Development Board
Table 2.1.: Supplying Power to I/O Extender
Page 5 of 13