Preliminary Information

25175H —March 2003

AMD Athlon™ XP Processor Model 8 Data Sheet

See “Frequency Identification (FID[3:0])” on page 33 for the

DC characteristics for FID[3:0].

FSB_Sense[1:0] Pins FSB_Sense[1:0] pins are either open circuit (logic level of 1) or are pulled to ground (logic level of 0) on the processor package with a 1 kΩ resistor. In conjunction with a circuit on the motherboard, these pins may be used to automatically detect the front-side bus (FSB) setting of this processor. Proper detection of the FSB setting requires the implementation of a pull-up resistor on the motherboard. Refer to the AMD Athlon™ Processor-Based Motherboard Design Guide, order# 24363 and the technical note FSB_Sense Auto Detection Circuitry for Desktop Processors, order# TN26673 for more information.

Table 27 is the truth table to determine the FSB of desktop processors.

Table 27. Front-Side Bus Sense Truth Table

FSB_Sense[1]

FSB_Sense[0]

Bus Frequency

 

 

 

1

0

RESERVED

 

 

 

1

1

133 MHz

 

 

 

0

1

166 MHz

 

 

 

0

0

RESERVED

 

 

 

 

The FSB_Sense[1:0] pins are 3.3-V tolerant.

FLUSH# Pin

FLUSH# must be tied to VCC_CORE with a pullup resistor. If a

 

debug connector is implemented, FLUSH# is routed to the

 

debug connector.

IGNNE# Pin

IGNNE# is an input from the system that tells the processor to

 

ignore numeric errors.

INIT# Pin

INIT# is an input from the system that resets the integer

 

registers without affecting the floating-point registers or the

 

internal caches. Execution starts at 0_FFFF_FFF0h.

INTR Pin

INTR is an input from the system that causes the processor to

 

start an interrupt acknowledge transaction that fetches the

 

8-bit interrupt vector and starts execution at that location.

JTAG Pins

TCK, TMS, TDI, TRST#, and TDO are the JTAG interface.

 

Connect these pins directly to the motherboard debug

 

connector. Pull TDI, TCK, TMS, and TRST# up to VCC_CORE with

 

pullup resistors.

Chapter 11

Pin Descriptions

77

Page 89
Image 89
AMD 8 manual FLUSH# Pin, IGNNE# Pin, INIT# Pin, Intr Pin, Jtag Pins

8 specifications

AMD's Ryzen 8000 series, commonly referred to as AMD 8, represents a significant leap in performance and efficiency, leveraging advanced technologies that cater to gamers, content creators, and enterprise users alike. With a continued focus on the Zen architecture, the Ryzen 8000 processors enhance performance per watt, delivering increased efficiency without compromising on power.

One of the standout features of AMD 8 is its adoption of the 5nm process technology. This innovation allows for a higher density of transistors, resulting in improved performance metrics and reduced power consumption. The smaller node size not only enhances clock speeds but also ensures that the chips generate less heat, making thermal management easier for system builders.

AMD has introduced a new architecture with the Ryzen 8000 series known as Zen 5. This architecture brings improved instructions per cycle (IPC) over its predecessors, leading to faster performance in both single-threaded and multi-threaded workloads. Gamers will benefit from higher frame rates, while professionals in fields such as video editing and 3D rendering can expect noticeable improvements in rendering times.

Another key technology in the AMD 8 lineup is the integration of AMD's next-generation RDNA graphics architecture. This allows for enhanced graphics performance in systems without dedicated GPU hardware. The combination of advanced graphics and CPU capabilities provides a more versatile platform for casual gamers and users with less demanding graphical needs.

Support for PCIe 5.0 is a game changer for the AMD 8000 series, offering double the bandwidth of its predecessor, PCIe 4.0. This feature allows for faster data transfer rates with compatible SSDs and graphics cards, ensuring that users can take full advantage of the latest storage technologies.

Additionally, AMD's Infinity Cache has made its way into the Ryzen 8000 series, further enhancing memory bandwidth. This technology reduces latency and increases efficiency by caching frequently accessed data closer to the processor.

In terms of connectivity, the Ryzen 8000 models come equipped with Wi-Fi 7 and Bluetooth 5.2, providing ultra-fast wireless connections that are essential for modern gaming and streaming experiences.

In summary, AMD's Ryzen 8000 series, or AMD 8, is designed for maximum performance and efficiency. With its advanced 5nm technology, enhanced Zen 5 architecture, integrated RDNA graphics, PCIe 5.0 support, Infinity Cache, and state-of-the-art connectivity features, it sets a new standard for processors in its class, making it a top choice for both gamers and professionals.