Delta Tau PMAC2A-PC/104 Manual Pagina 48

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PMAC2A-PC104 Hardware Manual
Base Board E-Point Jumper Descriptions
42
E4: CPU Frequency Select
E Point and Physical
Layout
Location Description Default
E4
C4
Remove jumper for 40 MHz operation
(E2 OFF also) or for 60 MHz operation
(E4 ON).
Jump pin 1 to 2 for 80 MHz operation
(E2 OFF).
No jumper
installed (standard
or Option 5EF)
Jumper installed
(Option 5CF)
E8: Phase Clock Lines Output Enable
E Point and Physical
Layout
Location Description Default
E8
B1
Jump pin 1 to 2 to enable the PHASE
clock line on the J8 connector,
allowing synchronization with another
PMAC.
Remove jumper to disable the PHASE
clock line on the J8 connector.
No Jumper
E9: Servo Clock Lines Output Enable
E Point and Physical
Layout
Location Description Default
E9
B1
Jump pin 1 to 2 to enable the SERVO
clock line on the J8 connector,
allowing synchronization with another
PMAC.
Remove jumper to disable the SERVO
clock line on the J8 connector.
No Jumper
E10 – E12: Power-Up State Jumpers
E Point and Physical
Layout
Location Description Default
E10
E12
E5
Remove jumper E10;
Jump E11;
Jump E12;
To read flash IC on power-up/reset
Other combinations are for factory use
only; the board will not operate in any
other configuration.
No E10 jumper
installed;
Jump E11 and E12
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