Connectors; Rs-232 Interface - NEC Univerge UM8000 Installation Manual

UM8000
LED I
S 4
ECTION
The following table describes the LED indicators.
C
S 5
ONNECTORS
ECTION
The following sections go into detail on each of the user interfaces.
5.1
Installation Manual
NDICATIONS
LED ID Color(s)
Active Green
Busy
Application Red/Green
CompactFlash
Card Activity

RS-232 Interface

An RS-232 interface is provided as a debug port to the CPU. The AMD Geode
companion chip (CS5536) provides a serial port interface. The CS5536 is
connected to an Intersil-Harris HIN202ECBN (or equivalent) RS-232
transceiver providing a DTE interface (COM1) with the following signals: TD,
RD, DSR, DTR and GND.
Table 6-1 LED Indicators
Description
Slow Flash
Fast Flash
Red
Flash
Solid Red/Green
(Yellow)
Flashing Green
Solid Green
Solid Red
Red
Indication
Off Power off.
On Reset.
Board is running but not in sync
with the chassis yet.
Board is in sync with chassis and
operating normally.
Off Power off or idle.
On Reset.
Indicates how many ports on the
VM card are currently in use.
Faster flash rates indicate heavier
use.
Off Power off.
Reset.
OS is running, application not
started.
Application running.
Application problem.
Indicates read/write activity on the
On CampactFlash card - controlled by
the IDE controller.
Issue No. 1.0
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