2-4
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Operating Instructions
2
RST (S2)
The Reset switch,
RST
, resets all onboard devices and causes HRESET* to
be asserted in the MPC8240. It also drives a
SYSRESET* signal if the
MVME2100 VME processor module is the system controller. The Status
Indicators
There are three LED (light-emitting diode) status indicators located on the
MVME2100 front panel:
BFL, SYS
, and
RUN
.
BFL (DS1)
The yellow BFL LED indicates board failure; this indicator is illuminated
during a hard reset. The LED can be turned on or off by writing to Bit 0
BD_FAIL in the System Status Register 2.
SYS (DS2)
The green
SYS
LED indicates CPU activity; when illuminated, this
indicator signifies that the MVME2100 is functioning as the VMEbus
System Controller.
RUN (DS3)
The green
RUN
LED illuminates when either
ROM/FLASH, SDRAM, or
PCI
accesses are occurring
.
10/100 BASE T Port
The RJ45 port on the front panel of the MVME2100 labeled
10/100
BASE
T
supplies the Ethernet LAN 10BaseT/100BaseTx interface.
DEBUG Port
The RJ45 port labeled
DEBUG
on the front panel of the MVME2100
supplies the MVME2100 serial communications interface, implemented
via a TL16C550 Universal Asynchronous Receiver/Transmitter (UART)
controller chip manufactured by Texas Instruments. It is asynchronous
only. For configuration information, refer to the section
