List of Registers

Table 32. Configuration Space Address Register (Sheet 3 of 5)

Byte

 

Reset Value

 

Write

Read

Offset

Register Name

Preload

(Hex)

Access

Access

(Hex)

 

 

 

 

 

 

 

 

 

 

 

 

 

7D (P)

Primary and Secondary Interrupt

00

N

Y

3D (S)

Pin Registers, page 155

 

 

 

 

 

 

 

 

 

 

7E (P)

Primary and Secondary Minimum

00

Y

N

Y

3E (S)

Grant Registers, page 155

 

 

 

 

 

 

 

 

 

 

7F (P)

Primary and Secondary

 

 

 

 

Maximum Latency Registers,

00

Y

N

Y

3F (S)

page 155

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Downstream and Upstream

 

 

 

 

83:80

Configuration Address Registers,

Indeterminate

Primary

Y

 

page 141

 

 

 

 

 

 

 

 

 

 

 

Downstream Configuration Data

 

 

 

 

87:84

and Upstream Configuration

Indeterminate

Primary

Primary

 

Data Registers, page 142

 

 

 

 

 

 

 

 

 

 

 

Downstream and Upstream

 

 

 

 

8B:88

Configuration Address Registers,

Indeterminate

Secondary

Y

 

page 141

 

 

 

 

 

 

 

 

 

 

 

Downstream Configuration Data

 

 

 

Second

8F:8C

and Upstream Configuration

Indeterminate

Secondary

ary

 

Data Registers, page 142

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Primary

90

 

00

N

Read-0-

 

Configuration Own Bits Register,

 

 

 

to- set

 

 

 

 

 

 

 

 

 

Second

 

page 142

 

 

 

91

 

00

N

ary

 

Read-0-

 

 

 

 

 

 

 

 

 

 

to- set

 

 

 

 

 

 

92:93

Configuration CSR, page 143

0000

Y

Y

 

 

 

 

 

 

9B:98

Downstream I/O or Memory 1

Indeterminate

Y

Y

 

and Upstream I/O or Memory 0

 

 

 

 

 

 

 

 

 

A7:A4

Translated Base Register, page

Indeterminate

Y

Y

136

 

 

 

 

 

 

 

 

 

 

 

97:94

 

Indeterminate

Y

Y

 

Downstream Memory 0, 2, 3, and

 

 

 

 

9F:9C

Indeterminate

Y

Y

 

Upstream Memory 1 Translated

 

 

 

 

A3:A0

Indeterminate

Y

Y

Base Register, page 137

 

 

 

 

 

 

AB:A8

 

Indeterminate

Y

Y

 

 

 

 

 

 

AF:AC

Downstream Memory 0, 2, 3, and

FFFFF000

Y

Secondary

Y

 

Upstream Memory 1 Setup

 

 

 

 

B7:B4

00000000

Y

Secondary

Y

Registers, page 139

 

 

 

 

 

BB:B8

Downstream Memory 2 Setup

00000000

Y

Secondary

Y

Downstream Memory 3 Setup

 

 

 

 

 

 

 

 

 

 

 

 

Downstream I/O or Memory 1

 

 

 

 

B3:B0

and Upstream I/O or Memory 0

00000000

Y

Secondary

Y

 

Setup Registers, page 138

 

 

 

 

 

 

 

 

 

 

 

Upper 32 Bits Downstream

 

 

 

 

BF:BC

Memory 3 Setup Register, page

00000000

Y

Secondary

Y

 

140

 

 

 

 

 

 

 

 

 

 

C3:C0

Primary Expansion ROM Setup

00000000

Y

Secondary

Y

Register, page 176

 

 

 

 

 

 

 

 

 

 

 

124

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

Page 124
Image 124
Intel 21555 user manual Configuration Space Address Register Sheet 3

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.