Motorola 700 Series Installation And Use Manual page 67

If you are installing multiple MVME162LXs in an
Note
MVME945 chassis, do not install one in slot 12. The
height of the IP modules may cause clearance
difficulties in that slot position.
Other MPUs on the VMEbus can interrupt, disable, communicate
with, and determine the operational status of the processor(s). One
register of the GCSR (global control/status register) set includes
four bits that function as location monitors to allow one
MVME162LX processor to broadcast a signal to any other
MVME162LX processors. All eight registers are accessible from any
local processor as well as from the VMEbus.
The following circuits are protected by solid-state fuses that open
during overload conditions: LAN/AUI, SCSI terminator, remote
reset connector, IndustryPack 5V, and ±12V.
The LED illuminates to indicate that all fuses are functioning
FUSES
correctly. If a fuse opens, you will have to remove power for several
minutes to let the fuse reset to a closed or shorted condition.
The MVME162LX uses two Zilog Z85230 serial port controllers to
implement the four serial communications interfaces. Each
interface supports CTS, DCD, RTS, and DTR control signals as well
as the TXD and RXD transmit/receive data signals. Because the
serial clocks are omitted in the MVME162LX implementation, serial
communications are strictly asynchronous. The Z85230 is
interfaced as DTE (data terminal equipment) with EIA-232-D signal
levels. The serial ports are routed to four RJ-45 connectors on the
front panel.
The figures on the following pages supply connection diagrams for
the four serial ports on the MVME162LX. These ports are connected
to external devices through cables connected to the front panel.
Installation Instructions
2-19
2