OCPRF100 MP Server System Technical Product Specification
Revision 1.0
10. Front Panel
This chapter describes the design and external interface of the OCPRF100 MP server system front panel. The front panel provides a user interface to the OCPRF100 MP server system via push buttons, indicator LEDs, an LCD panel, and a speaker. It also provides an interface to external systems via the ICMB. All of the front panel functions are controlled by a Philips* 80C652 microcontroller. LEDs used to indicate individual fan failure and a dual speed fan converter that controls the system fans are located on the front panel. System fan tachometer inputs are monitored by the front panel.
Features
•Philips 80C652* microcontroller
•Power, reset, and NMI push buttons
•Fan speed control, monitoring, and individual fan fail indication
•
•Power, power fail, hard drive fail, and fan fail indicator LEDs
•LCD panel, which provides boot status and other information
•Concurrent ICMB and COM2 EMP interface
•Speaker
•Operation from standby power
•Full authority power management
10.1 Introduction
This section provides an overview of the OCPRF100 MP server system front panel. It also discusses the primary components and their relationships, and provides diagrams of the physical board layout.
10.1.1Board Overview
The OCPRF100 MP server system front panel provides a simple user interface to the OCPRF100 MP server system. Push buttons on the front panel allow for
The front panel also allows other systems to communicate with the server, even while power is down, via an ICMB. The ICMB is an extension of the internal IPMB. Although the control circuitry for ICMB is present on the front panel, the ICMB user interface connectors are located at the rear of the chassis.
113