Serial Preload Sequence Sheet 2 | Intel 21555 instruction

List of Registers

Table 114. Serial Preload Sequence (Sheet 2 of 3)

	Not all of the bits in the sequence are used. Bits that are not used must be 0 (zero)

	Byte	Description
	offset	Description
	offset

	09h	Subsystem ID [7:0]

	0Ah	Subsystem ID [15:8]

	0Bh	Primary Minimum Grant

	0Ch	Primary Maximum Latency

	0Dh	Secondary Programming Interface

	0Eh	Secondary Sub-Class Code

	0Fh	Secondary Base Class Code

	10h	Secondary Minimum Grant

	11h	Secondary Maximum Latency

	12h	Downstream Memory 0 Setup [7:0]. Bits [0, 7:4] are not loaded and should be 0.

	13h	Downstream Memory 0 Setup [15:8]. Bits [11:8] are not loaded and should be 0.

	14h	Downstream Memory 0 Setup [23:16]

	15h	Downstream Memory 0 Setup [31:24]

	16h	Downstream I/O or Memory 1 Setup [7:0]. Bits [5:4] are not loaded and should be 0.

	17h	Downstream I/O or Memory 1 Setup [15:8]

	18h	Downstream I/O or Memory 1 Setup [23:16]

	19h	Downstream I/O or Memory 1 Setup [31:24]

	1Ah	Downstream Memory 2 Setup [7:0]. Bits [0, 7:4] are not loaded and should be 0.

	1Bh	Downstream Memory 2 Setup [15:8]. Bits [11:8] are not loaded and should be 0.

	1Ch	Downstream Memory 2 Setup [23:16]

	1Dh	Downstream Memory 2 Setup [31:24]

	1Eh	Downstream Memory 3 Setup [7:0]. Bits [0, 7:4] are not loaded and should be 0.

	1Fh	Downstream Memory 3 Setup [15:8]. Bits [11:8] are not loaded and should be 0.

	20h	Downstream Memory 3 Setup [23:16]

	21h	Downstream Memory 3 Setup [31:24]

	22h	Downstream Memory 3 Setup Upper 32 Bits [7:0]

	23h	Downstream Memory 3 Setup Upper 32 Bits [15:8]

	24h	Downstream Memory 3 Setup Upper 32 Bits [23:16]

	25h	Downstream Memory 3 Setup Upper 32 Bits [31:24]

		• Bit [0]: Primary Expansion ROM Setup [24] (enable)
	26h	• Bits [3:1]: Not loaded. Should be 0.
		• Bits [7:4]: Primary Expansion ROM Setup [15:11]

	27h	Primary Expansion ROM Setup [23:16]

	28h	Upstream I/O or Memory 0 Setup [7:0]. Bits [5:4] are not loaded and should be 0.

	29h	Upstream I/O or Memory 0 Setup [15:8]

	2Ah	Upstream I/O or Memory 0 Setup [23:16]

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

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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.

Intel 21555 user manual Serial Preload Sequence Sheet 2

Models: 21555

Table 114. Serial Preload Sequence (Sheet 2 of 3)

Byte

21555 specifications