PMAC-Lite Hardware Reference
E-Point Descriptions
21
E85: Host-Supplied Analog Power Source Enable
E Point &
Physical Layout
Location Description
Default
E85
F3
Jump pin 1 to pin 2 to allow A+14V to
come from PC bus (ties amplifier and
PMAC-Lite power supply together.
Defeats OPTO coupling)
Note that if E85 is changed, E88
and E87 must also be changed.
Also, see E90
No jumper
E86: Host Interrupt Signal Select
E Point &
Physical Layout
Location Description
Default
E86
E3
Jump pin 1 to 2 to allow PMAC-
Interrupt to host-PC on IRQ2
No jumper
E87 - E88: Host-Supplied Analog Power Source Enable
E Point &
Physical Layout
Location Description
Default
E87
F3
Jump pin 1 to pin 2 to allow AGND to
come from PC bus (ties amplifier and
PMAC-Lite GND together. Defeats
OPTO coupling.).
Note that if E87 is changed, E85 and
E88 also must be changed.
Also, see E90
No jumper
E88
F3
Jump pin 1 to pin 2 to allow A-14V to
come from PC bus (ties amplifier and
PMAC-Lite power supply together.
Defeats OPTO coupling).
Note that if E88 is changed, E87 and
E85 must also be changed.
Also, see E90.
No jumper
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