User Guide

Emcraft Systems
4.2. Jumpers
The following jumpers must be configured on the SOM-BSB-EXT board:
Jumper
Configuration
Notes
JP1
1-2 closed, 3-4 open
Enable power on the M2S-FG484 SOM
(VCC3)
JP2
1-2 open, 3-4 closed
Select appropriate JTAG mode and enable
power to the SmartFusion2 JTAG controller
JP3
1-3 open, 2-4 closed
Use the mini-USB port as the power
source
4.3. Board Connections
To power the SOM-BSB-EXT baseboard with the M2S-FG484 SOM up, simply connect it to a
PC / notebook by plugging a mini-USB cable into the P1 mini-USB connector on the SOM-
BSB-EXT board. As soon as the connection to the PC has been made, the LED
DS2 should lit
up, indicating that the board is up and running.
A single USB connection provides a 500 mA power to the M2S-FG484 SOM, which is
sufficient for basic functionality. Note however that some advanced operations, such as WiFi
connectivity using the USB WiFi module, may require more than 500 mA for reliable
operation. Use the second link of the mini-USB Y-cable to connect to the PC for such
configurations.
On the PC side, the USB link provides a serial console device to the M2S-FG484 SOM. The
software installed on the board is configured for a 115.2 K terminal. On the Linux host, the
serial console is available using a
/dev/ttyUSBn device.
To provide network connectivity to the board, connect it into your LAN by plugging a
standard Ethernet cable into the J1 connector. The board is pre-configured with an IP
address of 192.168.0.2.
The M2S-FG484 SOM comes with the U-Boot firmware and an appropriate Libero project pre-
installed into SmartFusion2. U-Boot provides sufficient interfaces for uploading and installing
new firmware images onto the board so you may never need to re-install firmware over the
JTAG interface. If however at some point you require re-programming U-Boot onto your
board, connect it to a Microsemi FlashPro programmer tool by plugging a standard JTAG
cable into the P3 connector.
Note: Only one of the FlashPro JTAG and the ARM JTAG interfaces must be used at any time.
Using the two JTAG interfaces simultaneously may result in a mal-function of the M2S-FG484
SOM.
4.4. Extension Interfaces
For description of the extension interfaces provided by the Emcraft Systems M2S-FG484 SOM
board refer to Emcraft Systems SmartFusion2 System-On-Module (M2S-FG484 SOM)
Hardware Architecture.
For description of the extension interfaces provided by the Emcraft Systems SOM-BSB-EXT
baseboard refer to Emcraft Systems SOM-BSB-EXT Baseboard Hardware Architecture.
The above mentioned documents can be downloaded from the following page:
http://www.emcraft.com/som/m2s-fg484
Linux SmartFusion2 7/11 Release 1.12.0
Emcraft Systems M2S-FG484 SOM Starter Kit Guide