PMAC-Lite Hardware Reference
E-Point Descriptions
23
E93 - E94: Reset from Bus by Software Enable
E Point &
Physical Layout
Location Description
Default
E93
C3
Jump 1-2 to provide hardware reset of
PMAC-Lite under the software control
of the host-PC. PMAC-Lite will
power up and stay in the reset state
until PC software writes 40 HEX to
Base +12. PMAC-Lite can be put in
reset state by PC writing 40 HEX to
Base +10
Remove jumper to disable this function
Only one of E39, E93, E94 should be
ON at the same time
No jumper
E94
C3
Jump 1-2 to provide hardware reset of
PMAC-Lite under the software control
of the host-PC. PMAC-Lite will
power up in Normal mode. PMAC-
Lite can be put in reset state by PC
writing 40 HEX to Base +12. PMAC-
Lite can be released from reset state by
PC writing 40 HEX to Base+10
Remove jumper to disable this function
Only one of E39, E93, E94 should be
ON at the same time
No jumper
E98: DAC/ADC Clock Frequency Control
E Point &
Physical Layout
Location Description
Default
E98
E3
Jump 1-2 to provide a 2.45 MHz
DCLK signal to DACs and ADCs
Jump 2-3 to provide a 1.22 MHz
DCLK signal to DACs and ADCs.
Important for high accuracy A/D
conversion on ACC-28.
1-2 Jumper
installed
Note:
This also divides the phase and servo clock frequencies in half.
See E29-E33, E3-E6, I10
E100: Output Flag Supply Select
E Point &
Physical Layout
Location Description
Default
E100
F1
Jump pin 1 to 2 to apply analog supply
voltage A+15V to U54 flag output
driver IC.
Jump pin 2 to 3 to apply flag supply
voltage OPT+V to U54 flag output
driver IC.
1-2 Jumper
installed
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