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20.3 Power Supply on Board
Power Supply
J719
I2C SMPS
4
n o t
3
c o n n e c te d
2
1
J709
SMPS
4
f r o m
3
P o w e r
S u p p l y
2
1
C17 C18
Image 20-3
Power Supply on Board
20.4 Functions on Board
Explanation functions on board
The ++5V Power Voltage Check
Illumination of the GREEN LED indicates
the presence ofthe ++5V
The ++5V canbe measured on pin 1
of the connector J709
Oscillator Operation
On pin 3 of the XT1 an
oscillator frequency
at 32 MHz has to be measured
Image 20-4
Functions on Board
R5976820 SLM R12+ PERFORMER 08/03/2005
SCL_STBY
SDA_STBY
R18
R19
++5V
5/6
R31
Low-Dropout
R 3 0
C20
C21
D8
D9
Green LED
Power ON
J709
IC20
SCL
FET Bus
Switches
SDA
P M P
P E
_
++5V
IC14
23/24
++2.5V
Dual-Output
Voltage
Regulator
17/18
++3.3V
J709
Correct loaded Altera
Illumination of the RED LED indicates a correct loading of the Altera IC15
20. CPU Module R7638858
++3.3V
R66
D14
Red LED
Configuration Software
CONF_DONE
loaded
from IC15
Q1
GND
Switch
Position Switch
ON
1
Boot Repair* (Software Download)
2
Password Protection enabled
3
no function
4
Baudrate 9600 (if Switch 1 is ON)
no action (if switch 1 is OFF)
Watch-Dog Operation
Reset of the Processor does not occur
as long triggerpulses arrive
at pin 6 of the Watch-Dog IC10
(approx. every 50ms).
OFF
Normal operation
disabled
no function
Baudrate 115000
no action
155
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