Technical data

1-10 Computer Group Literature Center Web Site
Hardware Preparation and Installation
1
Flash Write Protect Header (J16)
When the Flash write protect jumper is installed (factory configuration),
the Flash memory can be written to via the normal software routines.
When the jumper is removed, Flash memory cannot be written.
IP Bus Strobe Select Header (J18)
Some IP bus implementations make use of the Strobe∗ signal (pin 46) as
an input to the IP modules from the IP2 chip. Other IP interfaces require
that the strobe be disconnected.
With a jumper installed between J18 pins 1 and 2, a programmable
frequency source is connected to the Strobe∗ signal on the IP bus. Refer to
the IP2 chip programming section in the MVME172 Embedded Controller
Programmer’s Reference Guide for additional information.
If the jumper is removed from J18, the strobe line is available for a
sideband type of messaging between IP modules. The Strobe∗ signal is not
connected to any active devices on the board, but it may be connected to a
pull-up resistor.
2
1
(Factory configuration)
J16
Flash Write Protect
2
1
J18
IP Strobe disconnected
2
1
(Factory configuration)
J18
IP Strobe connected