Configuration Switches; Figure 11. Location Of Sw1 Configuration Switch Block; Table 5: Switch Setting Summary - VersaLogic Bengal VL-EPMe-30 Hardware Reference Manual

Configuration Switches

Figure 11 shows the as-shipped switch configuration with all switches in the Off position. The Off
position is toward the center of the board.
SW1
Switch
Block
6 5 4 3 2
SW1
Switch
Position
Clear CMOS RAM and Clears Real-Time Clock (see page 20)
Off
Position 1
On
up RTC registers
No Battery Switch (see Integrator's Note below)
Position 2 Off
On
Reset BIOS to factory defaults (see page 20)
Position 3 Off – Normal operation (default)
On – Resets BIOS to factory defaults when the board boots.
Position 4 For factory use only. Always leave in the Off position.
Position 5
SPI Flash Security – Not supported.
BIOS select
Position 6 Off – Primary BIOS (default)
On – Backup BIOS

Integrator's Note:

If a battery is installed (on the CBR-5015 paddleboard or externally using the J8 connector),
switch position 2 must be set to the Off position. If it is set to On, the battery will discharge
quickly.

If you don't use a battery, switch position 2 should be set to the ON position. Otherwise,
boot times could increase (by as much as 30 seconds in low temperature environments).
Bengal (VL-EPMe-30) Reference Manual
1
Off
On

Figure 11. Location of SW1 Configuration Switch Block

Table 5: Switch Setting Summary

–
Normal operation (default)
–
Clears battery backed up CMOS memory bytes 0xE-0x7F and clears battery backed
–
A battery is being used (default)
–
A battery is not being used
Description
Physical Layout
BENGAL_11
17