Technical data

Preparing the Board
http://www.mcg.mot.com/literature 1-5
1
Notes
Items in brackets are factory default settings.
J13 is a two-pin header to access the THERM1 and THERM0
pins on the M68060. These pins are connected to an internal
thermal resistor that can be used to obtain information about
the average temperature of the die. J13 is not configurable.
Table 1-2. MVME172LX Jumper Settings
Jumper Function Settings
J1
VMEbus system
controller selection
No jumper
[1-2]
2-3
Not system controller.
System controller.
Automatic system controller.
J11 IP bus clock selection
[1-2]
2-3
IP bus clock = 8MHz.
IP bus clock = local bus clock (30MHz /
32MHz).
J12
SCSI terminator
status
No jumper
[1-2]
Onboard SCSI bus terminators disabled.
Onboard SCSI bus terminators enabled.
J14
SRAM backup power
source selection
No jumper
[1-3, 2-4]
3-5, 4-6
1-3, 4-6
3-5, 2-4
Backup power disabled (storage only).
Primary +5V STBY; secondary +5V STBY.
Primary onboard battery; secondary onboard batt.
Primary +5V STBY; secondary onboard battery.
Primary onboard battery; secondary +5V STBY.
J16 Flash write protection
No jumper
[1-2]
Flash memory is write-protected.
Flash memory is writable.
J18 IP bus strobe control
[No jumper]
1-2
No strobe signal from IP2 ASIC to IP bus.
IP2 strobe present on IP bus.
J19
IP DMA snoop
control
[No jumper]
1-2
Snooping inhibited.
Snooping enabled.
J20
EPROM/Flash
configuration
3-4, 9-11, 10-12
[5-6, 8-10, 9-11]
7-9, 8-10
1-2, 7-9, 8-10
256K x 8 EPROMs
512K x 8 EPROMs
1M x 8 EPROMs
1M x 8 EPROMs, on-board Flash disabled
J21
General-Purpose
Readable Jumper
configuration
9-10 empty
[9-10]
Firmware defaults (in EPROM) selected.
Flash selected.
Other headers are user-definable. Factory
configuration: all jumpers installed except 9-10.