Optional Configurations

3

3.1PICMG Configuration

This section describes how to configure the DE1B55503 to have a Single Board Computer (SBC) with a PCI interface as defined in the PICMG PCI-ISA Interface Specification. See Section 1.3.1, “Connectors” on page 6.

The DE1B55503 can have an intelligent subsystem installed that supports the local bus. The intelligent subsystem is architecture independent. The 21555 can interface to any intelligent subsystem that has a PCI interface. Connector J101 can accept an intelligent controller and operate in the PICMG mode. See Figure 2 on page 8.

Table 10 gives the switch configuration to enable PICMG mode operation.

Table 10. J9 PICMG Switches

Switch

Switch

Switch Downa

Switch Up

Description

Pack

 

 

 

 

 

 

 

 

 

 

SW1

PICMG slot

DB66

Secondary reset originates

 

 

 

 

 

J9

SW2

PICMG

PCI

S_AD24 (IDSEL) originates

(becomes GNT2)

(S_AD24 becomes DSEL)

 

 

 

 

 

 

 

 

 

SW3

PICMG

PCI

(S_PME#)

 

 

 

 

 

a.J9 positions SW1, SW2, and SW3 must be down for normal PCI operation. The switches define where the RESET, ID-SEL, and PME originate.

Table 11 identifies the zero ohm resistors to remove or install for the system slot to act as the clock source. See Figure 3 on page 10. To operate an SBC controller on the local bus, the clocks must be routed accordingly.

Table 11. Clock Routing Zero Ohm Resistors

Function

Installed

Removed

 

 

 

System slot drives s_clk_i on the 21555

R68

R73, R65

 

 

 

System slot provides local clock

R92, R116, R69

R91, R115, R72

 

 

 

3.2Central Function and Arbiter Control

Table 12 on page 22 shows the configuration of the DE1B55503 for internal or external arbitration. Arbiter control can be programmed on the evaluation board by switching SW1 J21.

In one configuration, the internal arbitration logic of the 21555 is the central function.

21555 PCI-to-PCI Bridge Evaluation Board User’s Guide

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Intel 21555 manual Optional Configurations, Picmg Configuration, Central Function and Arbiter Control, J9 Picmg Switches

21555 specifications

The Intel 21555 is a prominent microprocessor developed by Intel, designed to cater to a variety of computing needs. This processor marks a significant step forward in Intel's lineup and underscores the company's commitment to advancing technology in personal computing, enterprise solutions, and beyond.

One of the standout features of the Intel 21555 is its advanced architecture. It utilizes a multi-core design, enabling improved performance through parallel processing. This architecture allows multiple applications to run seamlessly without a decline in speed. The cores are built on a cutting-edge manufacturing process that enhances energy efficiency while maintaining high clock speeds.

The Intel 21555 supports a wide range of technologies, including Intel Turbo Boost, which enables dynamic adjustments to the processor’s performance based on workload demands. This feature allows the processor to accelerate its speed during intensive tasks, providing users with a responsive experience when it matters the most.

Another key characteristic of the Intel 21555 is its support for integrated graphics. With Intel UHD Graphics technology, users can enjoy enhanced visuals for everyday tasks such as video playback, web browsing, and light gaming. This eliminates the need for a separate graphics card for many users, particularly in home office or light gaming scenarios.

Security is a significant focus in the design of the Intel 21555. It includes built-in hardware-based security features like Intel Trusted Execution Technology and Secure Boot. These features help protect against various types of threats, ensuring that user data remains secure from malicious attacks.

The Intel 21555 is also optimized for use with Intel's platform technologies, including Intel Optane memory and Intel Rapid Storage Technology. These technologies work together to deliver faster boot times and improved system responsiveness, making computing more efficient for users.

Furthermore, the Intel 21555 is designed to support virtualization technologies, allowing multiple operating systems to run concurrently without compromising performance. This is particularly useful for developers and businesses that rely on virtualization for testing and development environments.

In summary, the Intel 21555 is a powerful and versatile processor that reflects Intel's ongoing innovation in the computing space. With its multi-core architecture, enhanced graphics capabilities, strong security features, and advanced technologies, it stands out as an excellent choice for a wide range of applications, serving both casual users and professionals alike.