Specifications

Chapter 2 Product Overview
14 Reference Manual LittleBoard 800
LED Definitions
Tables 2-3 and 2-4 provide the LED colors and definitions for the Ethernet ports, Port 1 (J23) and
Port 2 (J10) located on the LittleBoard 800. Refer to Figure 2-6.
Table 2-3. Ethernet Port 1 (J23) LED Indicators
Indicator Definition
Ethernet
Link/Activity
LED
Link/Activity LED – This yellow LED is the activity/link
indicator and provides the status of Ethernet port 1 (J23).
• A steady On LED indicates a link is established
• A flashing LED indicates active data transfers
Ethernet
Speed LED
Speed LED – This green LED is the Speed indictor and
indicates
transmit or receive speed of Ethernet port 1 (J23).
• A steady Off LED shows the port at 10BaseT speed
• A steady On LED shows the port at 100BaseT speed
Table 2-4. Ethernet Port 2 (J10) LED Indicators
Indicator Definition
Ethernet
Link/Activity
LED
Link/Activity LED – This yellow LED is the activity/link indicator
and provides the status of Ethernet port 2 (J10).
• A steady On LED indicates a link is established
• A flashing LED indicates active data transfers
Ethernet
Speed LED
Speed LED – This green LED is the Speed indictor and indicates
transmit or receive speed of Ethernet port 2 (J10).
• A steady On LED indicates the port is at 10/100BaseT speed
• A steady Off LED indicates the port is at 1000BaseT speed
Jumper Definitions
Table 2-5 describes the jumpers shown in Figure 2-7.
Table 2-5. Jumper Settings
Jumper # Installed Removed/Installed
JP1 – LVDS Voltage Select Enable +3.3V (pins 1-2) Enable +5V (pins 2-3)
JP2 – CompactFlash
Master/Slave
Enable Master (pins 1-2) Enable Slave (pins 2-3) Default
JP3 – CompactFlash
Voltage Selection
Enable +5V (pins 1-2) Enable +3.3V (pins 2-3)
JP4 – Serial Port 1
RS485 Termination
Enable Termination (pins 1-2) Disable Termination (Removed)
Default
JP5 – Serial Port 2
RS485 Termination
Enable Termination (pins 1-2)
Disable Termination (Removed)
Default
JP6 – Serial Port 3
RS485 Termination
Enable Termination (pins 1-2)
Disable Termination (Removed)
Default
JP7 – Serial Port 4
RS485 Termination
Enable Termination (pins 1-2) Disable Termination (Removed)
Default
JP19 – CMOS Normal/Clear Clear CMOS (pins 1-2) Normal (Removed) Default
Note: Only the jumpers listed above are populated on the board. Jumpers or shunts use 2mm spacing.