Power Management 8-5
The W22 jumper is used to select whether the battery is onboard (1-2) or external (2-3).
The W23 jumper is used to select what voltage is monitored:
•
Short pins 1-2 to monitor an external voltage that is present on the power fail input,
through pin 6 of the J9 power connector,
•
Or short pins 2-3 to monitor the internal/external battery.
There are three ways to set the Power Fail and Battery circuit:
•
Using Internal Battery & Monitoring External Source:
Internal Battery (set by W22 jumper with pins 1-2 shorted) and External Power Fail
Input to Pin 6 of J9 connector (set by W23 jumper with pins 1-2 shorted).
The power detection input can only accept DC voltage. The line is monitored via a
resistor network made up of a user-defined resistor (R98) and a fixed 1K
Ω
resistor
connected to GND. The junction of these two resistors is connected to the input of the
power fail circuit which has its threshold set to 1.25V. R98 can be calculated as
follows:
R98 = 1K
Ω
(VI-1.25)
where VI is input voltage on pin 6
1.25
of the power connector.
•
Using Internal Battery & Monitoring Internal Battery:
Internal Battery (set by W22 jumper with pins 1-2 shorted) and Power fail detect when
battery is less than 3V (set by W23 jumper with pins 2- 3 shorted).
When the internal battery is selected as being the source of the power fail circuit, it is
set to trip when the battery goes lower that 3V.
•
Using External Battery & Monitoring External Battery:
External Battery (set by W22 jumper with pins 2-3 shorted) and Power fail detect when
battery is less than 3V (set by W23 jumper with pins 2-3 shorted).
When the external battery is selected as being the source of the power fail circuit, it is
set to trip when the battery drops below 3V.
This means that when an external battery is used, the voltage needs to be monitored on the
battery.
Jumper locations and settings are illustrated in Section 3.
Summary of Contents for VIPer808
Page 21: ...Installing Memory 2 3 DIAGRAM 2 1 Assembly Top...
Page 22: ...Installing Memory 2 5 DIAGRAM 2 2 Assembly Bottom...
Page 26: ...Setting Jumpers 3 3 DIAGRAM 3 1 VIPer808 Jumper Locations with Default Settings...
Page 28: ...Setting Jumpers 3 6 TABLE 3 1a Jumper Settings W1 W4 W13 W14...
Page 29: ...Setting Jumpers 3 7 TABLE 3 1b AMD DX2 DX4 CPU Jumper Settings W1 W15 W15C...
Page 30: ...Setting Jumpers 3 8 TABLE 3 1c AMD 5x86 CPU Jumper Settings W1 W15 W15C...
Page 31: ...Setting Jumpers 3 9 TABLE 3 1d Intel CPU Jumper Settings W1 W15 W15C...
Page 32: ...Setting Jumpers 3 10 TABLE 3 1e SGS CPU Jumper Settings W1 W15 W15C...
Page 33: ...Setting Jumpers 3 11 TABLE 3 1f Jumper Settings W18 W20 W23...
Page 92: ...Memory I O Maps B 1 APPENDIX B MEMORY I O MAPS B 01 MEMORY MAPS DIAGRAM B 1 Memory Map Diagram...
Page 96: ...Mechanical Layout Block Diagram C 3 DIAGRAM C 1 Mechanical Specifications...
