Eurotech Appliances ZEUS PXA270 - Manual (Page 93)

ZEUS Technical Manual Connectors, LEDs and jumpers
© 2007 Eurotech Ltd Issue D 93
Jumpers
There are six user selectable jumpers on the ZEUS. Their use is explained below.
JP1 – User jumpers
Connector: 8-way, 2.54mm (0.1") dual row through-hole header
Pin Signal name Pin Signal name GPIO
1 GND 2 USER_LINK1 CPU_GPIO 13
3 GND 4 USER_LINK2 CPU_GPIO 102
5 GND 6 USER_LINK3 EXP1_GPIO 6
7 GND 8 USER_LINK4 EXP1_GPIO 14
These are four user configurable jumpers connected to GPIO pins of PXA270 and
MAX7313 GPIO Expander 1.
JP1 Description
GPIO read as ‘0’
GPIO read as ‘1’ (Default)
User jumpers 1 and 2 (GPIO 13 and 91) may be
connected to an external momentary push switch and
used to wake the ZEUS from sleep.
JP2 – Battery disconnect
Connector: 2-way, 2.54mm (0.1") through-hole header
Pin Signal name
1 Battery Plus Terminal
2 Battery Backup switch input
Normally supplied with jumper removed.
This jumper is used to disconnect the backup battery to prevent it from draining.
JP2 Description
Battery connected
Battery disconnected (default)
1 2
8 7
1 2