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21152 PCI-to-PCI Bridge
Evaluation Board
User’s Guide
July 1998
Order Number: 278127-001
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Contents 1 Introduction.........................................................................................................................1 1.1 Overview ...............................................................................................................1 1.2 Features ................................................................................................................1 1.3 Major Components.................................................................................
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Figures 1-1 EB152 Major Components .................................................................................... 2 1-2 Secondary PCI Slot Numbering ............................................................................3 1-3 EB152 with One Secondary Bus Option Card ......................................................4 1-4 EB152 with Two Secondary Bus Option Cards....................................................4 1-5 Tri-Level with Two EB152s .....................................
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Introduction 1 This document describes the Intel 21152 PCI-to-PCI Bridge Evaluation Board (also referred to as the EB152). The EB152 is an evaluation and development board for systems based on the Intel 21152 PCI-to-PCI Bridge chip (the 21152). Intel’s 21152 is a second-generation PCI-to-PCI bridge and is fully compliant with the electrical and protocol requirements of the PCI-to-PCI Bridge Architecture Specification, Revision 2.1, and the PCI-to-PCI Bridge Architecture Specification, Revisi
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Introduction • Supports four secondary 5 V PCI bus option card slots. • May be built with 3.3-V secondary PCI card slots. If you are interested in this option, call the Intel Information Line (see, Support, Products, and Documentation). • Supports an optional external secondary bus arbiter. • Supports multiple levels of PCI bus hierarchy 1.3 Major Components Figure 1-1 shows the major components on the EB152. Figure 1-1. EB152 Major Components Viewed from Side 1 PCI Option Card Slot J6 (PCI Dev
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Introduction 1.4 Jumpers 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 1-1 shows 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
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Introduction 1.6 Typical Configurations The EB152 supports various PCI configurations with different types of devices. Figure 1-3 through Figure 1-6 show examples of PCI configurations. The primary bus connector attaches to a PCI slot on the motherboard of the host system or to a secondary PCI bus slot on another EB152. A 5-V or universal PCI option card, or another EB152, can be plugged into any one of the four secondary bus option card slots. Figure 1-3 shows the EB152 with one secondary bu
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Introduction Figure 1-5 shows a tri-level bus with two EB152s. Figure 1-5. Tri-Level with Two EB152s Option Card PCI Device Host System Motherboard Option Card EB152 EB152 PCI 21152 21152 Device LJ-05031.AI4 Figure 1-6 shows four PCI buses in a tri-level hierarchy. Figure 1-6. Four PCI Buses in a Tri-Level Hierarchy Option Card EB152 PCI 21152 Device Host System Motherboard Option Card EB152 EB152 PCI 21152 21152 Device LJ-05032.AI4 21152 PCI-to-PCI Bridge Evaluation Board User’s Guide 1-5
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Installation 2 This chapter provides information about the EB152 specifications and the hardware and software requirements for using the EB152. It also describes how to install the EB152. 2.1 Specifications The physical and power specifications for the EB152 are as follows: Dimensions: Height: 20.0 cm (7.90 in) Width: 13.2 cm (5.20 in) Power Requirements: dc amps @ 5 V: 2.0 A (maximum) 2.2 Hardware Requirements The following equipment is required to use the EB152: • A computer system eq
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Installation 2.4 Installation Procedure Figure 1-1 illustrates the EB152 and shows the location of components referred to in this section. Install the EB152 as follows: 1. Power down the host system that will contain the EB152. 2. Place the motherboard with the associated support devices on a bench if mechanical constraints do not allow testing of the EB152 and the expansion slots inside the system box. 3. Configure your system as follows: a. Insert the card edge of the EB152 into a PCI slo
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Interrupt Routing 3 This chapter describes the way in which interrupts are routed. This information is provided as a reference for designers. Because a total of 16 interrupts are connected to the secondary bus PCI slots (INTA#, INTB#, INTC#, and INTD# for each slot) and only four interrupts are driven to the card edge, the 16 incoming interrupts must be combined. This ORing of interrupts is performed in accordance with the PCI-to-PCI Bridge Architecture Specification. Table 3-1 shows the O
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Interrupt Routing Table 3-2 lists the interrupts from the devices on the secondary slots to the interrupts on the EB152 fingers. Table 3-2. Interrupts from Devices to EB152 Fingers Interrupts from Devices on Interrupts on EB152 Fingers Secondary Slots INTA4 L INTA L INTD5 L INTC6 L INTB7 L INTB4 L INTB L INTA5 L INTD6 L INTC7 L INTC4 L INTC L INTB5 L iNTA6 L INTD7 L INTD4 L INTD L INTC5 L INTB6 L INTA7 L Note: In the first column of Table 3-2, the number after each interrupt pin is the
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Secondary Bus Arbitration 4 This chapter describes the use of jumpers to test 21152 secondary bus arbitration, an optional programmable feature. For more detailed information about the 21152 arbiter, refer to the 21152 PCI-to-PCI Bridge Data Sheet. The EB152 has two secondary bus arbiter systems: • An internal arbiter implemented in the 21152 that supports four external masters in addition to the 21152 • An optional external arbiter implemented in an AMD MACH210A programmable device The d
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Secondary Bus Arbitration Figure 4-1. Arbitration Jumpers Viewed from Side 1 J6 J3 J13 J5 J4 J11 J2 J9 J8 J10 J12 W7 J7 _ W5 E3 Socket for Optional PAL to J1 E3 Control Secondary Bus External W4 E4 Arbitration W1 21152 _ W1, W4, J7 Secondary Bus External/Internal Arbitration Configurable Jumpers LJ-05127.AI4 Table 4-1 describes the operation of internal arbitration jumpers. Table 4-1. Internal Arbitration Jumper Positions Jumper Position Description J7 Bottom Selects the 21152 as the sourc
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Secondary Bus Arbitration Table 4-2 describes the operation of jumpers for external arbitration with PAL. Table 4-2. External PAL Arbitration Jumper Positions Jumper Position Description J7 Top Selects the PAL as the source of secondary grants. W4 Right Selects the board signal gt_out<4> (the external secondary grant to the 21152) to drive the 21152 s_req_l<0> input. W1 Right Ties s_cfn_l high, which disables the21152 internal arbiter and causes the following reconfigurations: Signal s_gnt_l<0
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Kit Contents A This appendix lists the contents of the Intel Semiconductor 21152 PCI-to-PCI Bridge Evaluation Kit. The Intel Semiconductor 21152 PCI-to-PCI Bridge Evaluation Kit contains the following materials: • A Intel Semiconductor 21152 PCI-to-PCI Bridge Evaluation Board (EB152) • A diskette that contains an MS-DOS utility for configuring the EB152 • A documentation package that includes the following: — 21152 PCI-to-PCI Bridge Data Sheet — 21152 PCI-to-PCI Bridge Product Brief —
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