Connectors
and
jumpers
Issue C
23
Jumpers
There are three jumpers on the ISIS-Breakout; the use of each one is explained below.
JP1 – BAT-EN
JP1 function table:
Position
Function
Open
Battery is disconnected
Closed (default)
Battery is connected
JP2 – BEEP-EN
JP2 function table:
Position
Function
Open
Onboard beeper is disconnected
Closed (default)
Onboard beeper is connected
JP3 – ALWAYS ON-EN
JP3 function table:
Position
Function
Open (default)
12V and 5V supplies are switched
on upon PS_ON# assertion (ATX
style power mode)
Closed
12V and 5V supplies are always
switched on (AT style power
mode)
By default (JP3 open), the user needs to press the momentary On/Off button to
power up the ISIS. However in the Always on mode (JP3 closed), the On/Off
button is not used and the ISIS powers up automatically.
Содержание ISIS
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