PC4-PRESTO • CompactPCI
®
PlusIO • 4
th
Generation Intel
®
Core™-4xxx Processor
Pin Headers & Debug
Front Panel Handle Microswitch Header P-FPH
The jumper P-FPH is used for attachment of an external SPDT switch. By default, P-FPH is connected
across a short cable harness to a microswitch, which is integrated into the PC4-PRESTO front panel
handle (ejector lever). The switch performs a power button event (e.g. system shutdown) by short-
circuiting the pins 1 and 3 of P-FPH when activated (hold unlock button of front panel handle
depressed momentarily).
P-FPH
1
black
Microswitch Pole (Common), Wired to PLD
2
red
Microswitch Throw - F/P Handle Locked Position, NC
3
yellow
Microswitch Throw - F/P Handle Unlocked Position, Wired to GND
PLD Programming Header P-ISP
The PC4-PRESTO is provided with a powerful PLD (in-System Programmable Logic Device) which
replaces legacy glue logic. The programming header P-ISP is not stuffed (in use for manufacturing
only). Its footprint is situated at the bottom side of the board.
P-ISP
1
+3.3V
2
TDO
3
TDI
4
NC
5
KEY
6
TMS
7
GND
8
TCK
# 276.02.003.11
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1
240.1.08.I • © EKF • ekf.com
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