List of Registers

Table 32. Configuration Space Address Register (Sheet 2 of 5)

Byte

 

Reset Value

 

Write

Read

Offset

Register Name

Preload

(Hex)

Access

Access

(Hex)

 

 

 

 

 

 

 

 

 

 

 

 

 

2F:2E

Subsystem ID Register, page

0000

Y

Secondary

Y

6F:6E

154

 

 

 

 

 

 

 

 

 

 

33:30 (P)

Primary Expansion ROM BAR,

00000000

Via Setup

Via Setup

Y

73:70 (S)

page 175

 

 

 

 

 

 

 

 

 

 

34

Enhanced Capabilities Pointer

DC

—

N

Y

74

Register, page 154

 

 

 

 

 

 

 

 

 

 

37:35 (P)

Reserved

000000

—

N

Y

77:75 (S)

 

 

 

 

 

 

 

 

 

 

 

3B:38 (P)

Reserved

00000000

—

N

Y

7B:78 (S)

 

 

 

 

 

 

 

 

 

 

 

3C (P)

Primary and Secondary Interrupt

00

—

Y

Y

7C (S)

Line Registers, page 154

 

 

 

 

 

 

 

 

 

 

3D (P)

Primary and Secondary Interrupt

01

—

N

Y

7D (S)

Pin Registers, page 155

 

 

 

 

 

 

 

 

 

 

3E (P)

Primary and Secondary Minimum

00

Y

Secondary

Y

7E (S)

Grant Registers, page 155

 

 

 

 

 

 

 

 

 

 

3F (P)

Primary and Secondary

 

 

 

 

Maximum Latency Registers,

00

Y

Secondary

Y

7F (S)

page 155

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

45:44 (P)

Primary and Secondary

0000

 

 

 

05:04 (S)

Command Registers, page 149

 

 

 

 

 

 

 

 

 

 

 

 

 

47:46 (P)

Primary and Secondary Status

0290

—

Y

Y

07:06 (S)

Registers, page 150

 

 

 

 

 

 

 

 

 

 

4B:49 (P)

Primary and Secondary Class

068000

Y

N

Y

0B:09 (S)

Code Registers, page 152

 

 

 

 

 

 

 

 

 

 

4C (P)

Primary and Secondary Cache

00

—

Y

Y

0C (S)

Line Size Registers, page 152

 

 

 

 

 

 

 

 

 

 

4D (P)

Primary Latency and Secondary

 

 

 

 

Master Latency Timer Registers,

00

—

Y

Y

0D (S)

page 153

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

53:50 (p)

Secondary CSR Memory BAR

00000000

—

Y

Y

13:10 (s)

 

 

 

 

 

 

 

 

 

 

 

57:54 (p)

Secondary CSR I/O BAR

00000001

—

Y

Y

17:14 (s)

 

 

 

 

 

 

 

 

 

 

 

5B:58 (P)

Upstream I/O or Memory 0 BAR

00000000

Via Setup

Via Setup

Y

1B:18 (S)

 

 

 

 

 

 

 

 

 

 

 

5F:5C (P)

Upstream Memory 1 BAR

00000000

Via Setup

Via Setup

Y

1F:1C (S)

 

 

 

 

 

 

 

 

 

 

 

63:60 (P)

Upstream Memory 2 BAR

00000000

Via Chip

Via Chip

Y

23:20 (S)

Control 1

Control 1

 

 

 

 

 

 

 

 

 

67:64 (P)

Reserved

00000000

—

N

Y

27:24 (S)

 

 

 

 

 

 

 

 

 

 

 

73:70 (P)

Reserved

00000000

—

N

Y

33:30 (S)

 

 

 

 

 

 

 

 

 

 

 

7C(P)

Primary and Secondary Interrupt

00

—

Y

Y

3C (S)

Line Registers, page 154

 

 

 

 

 

 

 

 

 

 

21555 Non-Transparent PCI-to-PCI Bridge User Manual

123

Page 122 Page 124
Page 123
Image 123
Intel 21555 user manual Configuration Space Address Register Sheet 2
Page 122 Page 124

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.
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