Chapter 2
Product Overview
MightyBoard 821
Reference Manual
11
Jumper Definitions
Table 2-4
describes the jumpers shown in
Figure 2-4 on page 10
.
Table 2-4. Jumper Settings
Note:
*The jumper or shunt may be stored by connecting it to one of the pins for safe keeping.
Specifications
Power Specifications
Tables 2-5
and
2-6
list the power requirements for the MightyBoard 821 with 1.5 and 2.0 GHz CPUs.
Operating configurations:
•
In-rush operating configuration includes 512MB DDR RAM, ATX power, CRT monitor, two SATA
HDDs and one IDE HDD each with WinXP Pro, keyboard and mouse.
•
Idle operating configuration includes the same items as the in-rush configuration.
•
BIT* = Burn-In-Test. Operating configuration includes Idle configuration as well as one serial port with
loop-back, one parallel port with loop-back, two Ethernet connections, and four external USB flash
drives.
Jumper #
Installed
Removed/Installed
JP1 – CMOS Normal/Clear
Normal (pins 1-2)
Default
Clear (pins 2-3)
JP2 – CPU Voltage Select
1.5V/533 FSB CPU (pins 1-2)
1.8V/400 FSB CPU (removed)
JP3 – Serial 3 (COM3) RS-485
Termination
Termination (pins 1-2)
No Termination (removed)
*
Default
JP3 – Serial 4 (COM4) RS-485
Termination
Termination (pins 3-4)
No Termination (removed)
*
Default
JP4 – LVDS Voltage Select
3.3V (pins 1-2)
Default
5V (pins 2-3)
JP5 – Inverter Voltage Select
+5V (pins 1-2)
+12V (pins 2-3)
Table 2-5. System Power Requirements (1.5 GHz CPU)
Parameter
+12.0VDC
In-rush Current
(Typical)
Max: 8.00A (96.00W)
Min: 0.28A (3.36W)
Idle
1.20A (14.38W)
BIT* Current
(Typical)
1.54A (18.47W)
