21
Chapter 2
2.8 Power Connector
The UNO-2050E comes with a Phoenix connector that carries 9 ~ 30
V
DC
external power input, and features reversed wiring protection.
Therefore, it will not cause any damage to the system by reversed wiring
of ground line and power line. Please refer to A.5 for its pin assignments.
2.9 LED Indicators
There are two LEDs on the UNO-2050E front panel for indicating system
status: PWR LED is for power status and IDE LED is for IDE bus status.
2.10 PS/2 Keyboard and Mouse Connector
The UNO-2050E provides a PS/2 keyboard and PS/2 mouse connector. A
6-pin mini-DIN connector is located on the panel of the UNO-2050E. The
UNO-2050E comes with an adapter to convert from the 6-pin mini-DIN
connector to two 6-pin mini-DIN connectors for PS/2 keyboard and PS/2
mouse connection. Please refer to Appendix A.6 for its pin assignments.
2.11 VGA: VGA Display Connector
The UNO-2050E provides a VGA controller for a high resolution VGA
interface. It supports VGA and VESA, up to 1280 x 1024 @ 8 bit and
1024 x 768 @ 24 bit resolution and up to 16 MB share memory. The
VGA interface is reserved for system testing and debugging.
2.12 Programmable LED and Buzzer
In an application without monitor display, it is always a problem to know
the system status. Another PC may be needed to monitor headless device
status via RS-232 or Ethernet. In order to solve this problem, UNO-
2050E offers a programmable LED indicator and buzzer.
Table 2.16: LED & Buzzer Control Register Bit Map
Base+10H R/W
LED Control Register
LEDS1
LEDS0
LEDEn
Base+11H R/W
Buzzer Control Register
SPKS1
SPKS0
SPKEn
