Intel 21152 manual Jumpers, Secondary Slot Numbering and Idsel Mapping, Jumper Connections

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Introduction

1.4Jumpers

The EB152 provides 10 jumpers that can be used for debugging and for special evaluation tests. The jumpers can be used for monitoring CLK signals and 21152 secondary PCI signals. Additional optional jumpers control secondary bus arbitration.

Table 1-1shows the connections required to allow observation of these signals at scope pod connector pins.

Table 1-1.

Jumper Connections

 

 

 

 

 

Jumper

Description

 

 

 

 

J1

This jumper monitors the following signals:

 

 

p_clk (PCI clock)

 

 

s_clk_o<4:1> (four secondary PCI clocks)

 

 

s_clk_o<0> (fed back to the s_clk input pin)

 

 

s_gnt_l<2> and s_gnt_l<3>.

 

 

 

 

J2, J8 through J12

Logic analyzer pods can be plugged into these jumpers for

 

 

monitoring 21152 secondary PCI signals.

 

 

 

 

W1, W4, J7

These jumpers control secondary bus arbitration. Chapter 4, Secondary Bus

 

 

Arbitration, provides information about configuring these jumpers.

 

 

 

1.5Secondary Slot Numbering and IDSEL Mapping

The PCI secondary bus option card slots are mapped to PCI device numbers 4, 5, 6, and 7 as shown in Figure 1-2. The secondary bus lines s_ad<20:23> are used as secondary IDSEL lines.

Figure 1-2. Secondary PCI Slot Numbering

PCI Device Numbers

4 5 6 7

PCI Option Card Slots

LJ-04468.AI4

21152 PCI-to-PCI Bridge Evaluation Board User’s Guide

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Contents PCI-to-PCI Bridge Evaluation Board PCI-to-PCI Bridge Evaluation Board User’s Guide Contents Tables FiguresIntroduction FeaturesOverview EB152 Major Components Major ComponentsSecondary Slot Numbering and Idsel Mapping JumpersJumper Connections EB152 with One Secondary Bus Option Card Typical ConfigurationsTri-Level with Two EB152s Page Software Requirements InstallationSpecifications Hardware RequirementsInstallation Procedure Interrupt ORing Interrupt RoutingInterrupts from Devices to EB152 Fingers Interrupt RoutingSecondary Bus Arbitration Internal Arbitration Jumper Positions Arbitration JumpersExternal PAL Arbitration Jumper Positions Page Kit Contents Page Http//developer.intel.com Support, Products, and Documentation

21152 specifications

The Intel 21152 is a highly regarded chip designed specifically for use in a variety of networking applications, including Ethernet and Token Ring networks. Introduced in the 1990s, this device played a critical role in advancing network communication technologies by providing high-performance data transfer capabilities and supporting various network protocols.

One of the main features of the Intel 21152 is its ability to handle dual 10BASE-T Ethernet ports, allowing for flexibility in network configurations. This dual-port capability is essential for implementing redundancy and load balancing in networking environments, ensuring that data can be transmitted efficiently even in the event of device failures. Furthermore, the chip is capable of supporting both full-duplex and half-duplex modes, accommodating different network setups and enhancing overall throughput.

The Intel 21152 utilizes a sophisticated architecture that integrates a range of technologies to optimize performance. It features a built-in microprocessor that enhances its processing capabilities, enabling it to manage data packets intelligently. Additionally, the chip supports a variety of networking standards such as IEEE 802.3, which ensures compatibility with a wide range of devices and systems in existing network infrastructures.

Another key characteristic of the Intel 21152 is its low power consumption, which was particularly notable for its time. This efficiency not only reduces operational costs but also contributes to the longevity of devices utilizing the chip, making it a practical choice for manufacturers seeking to create reliable networking equipment.

Moreover, the Intel 21152 supports several memory interfaces, allowing for the integration of external memory to further enhance its functionality. This capability is beneficial for applications requiring high-speed data buffering and processing.

In summary, the Intel 21152 emerged as a prominent networking chip with its dual-port support, efficient architecture, compatibility with various standards, and low power requirements. Its advanced features made it a valuable component in the development of networking solutions, solidifying its reputation in the industry and influencing the design of subsequent generations of network devices. With its significant technological advancements, the Intel 21152 paved the way for improved connectivity and communication in computing environments.
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