Publication No. IMP2B-0HH/5
Configuration 11
2.2 Suggested Link Settings
For initial testing of the board, the following link settings are recommended:
Table 2-2 Suggested Link Settings
Link
Setting Function
P5 5-6
Out
Spare link
P5 3-4
Out
NVRAM write protected
P5 1-2
Out
CPCI speed defined by system
P4 5-6
Out
Backplane JTAG AutoWrite not connected
P4 3-4
Out
Backplane JTAG signals disabled
P4 1-2
Out
JTAG Scanbridge disabled
P3 5-6
Out
User Flash write protected
P3 3-4
Out
Boot Flash write protected
P3 1-2
Out
Flash Password not visible
P2 5-6
Out
Normal operation
P2 3-4
Out
Use Main boot image
P2 1-2
Out
P1
Out
Factory test only
2.3 Factory Test Link (P1)
This link is for factory test use only and should not be fitted.
2.4 Flash Boot Image Select Links (P2 1-2 and 3-4)
The Boot Flash is divided into four sections, with all sections accessible all of the
time. This allows for three user boot images to be stored in the Flash, along with a
factory-programmed recovery boot image. Using these links, the four sections can be
swapped around in the memory map, selecting which image is used at boot time.
The state of the links is reflected in
jumpers fitted, the IMP2B boots from the default (Main) boot image; when a jumper
is fitted on either of the links, the IMP2B boots from another boot image, as follows:
Table 2-3 Links P2 1-2 and 3-4
1-2
3-4
Boot Image Selected
Out Out
Main (default)
In
Out
Alternate
Out In
Recovery
In
In
Extended