KTD-S0001-0
Page 32
Power Supply
JRex
plus
LX
User's Guide
18
Power Supply
The JRex
plus
LX supports two power supply modes:
AT
and
ATX
.
AT
mode: Only one connector (4 pins) is required. After switching on the supply voltage a circuit generates
a reset and the board immediately begins to work. The JRex
plus
board works fine in +5V only mode. The
+12V supply voltage is optional and can be used for the backlight voltage for example. Disadvantage:
Power state S5 is consuming more current.
ATX
mode: Two connectors (4 pins and 2 pins) are required. After switching on the supply voltage the board
is then immediately ready to operate, though only on standby power. When the power button is pressed the
remaining supply voltages are connected and the board begins to work.
18.1
Main Power Connector (AT/ATX)
The main power connector is available as X22 (4 pins).
Header
Pin
Signal Name
Function
1
VDD
1)
Power 12V
2
GND
Ground
3
GND
Ground
1
4
VCC
1)
Power 5V
18.2
Power Connector Supplement (ATX)
The power connector supplement is available as X23 (2 pins).
Header
Pin
Signal Name
Function
1
/PS_ON
Power supply on
1
2
5VSB
1)
Standby v5V
Note:
1)
To protect the external power lines of peripheral devices make sure that
- the wires have the right diameter to withstand the maximum available current.
- to enclosure of the peripheral device fulfills the fire-protecting conditions of IEC/EN 60950.
Summary of Contents for JRexplus LX
Page 1: ...JRexplus LX KTD S0001 0...