Design Checklist

Table 3-1. Slot Connectivity (Sheet 2 of 3)

Processor Pin

Pin Connection

 

 

DBSY#

UP: Connect to 82443GX; DP: Connect CPUs and 82443GX.

 

 

DEFER#

UP: Connect to 82443GX; DP: Connect CPUs and 82443GX.

 

 

DEP[7:0]

No connect.

 

 

DRDY#

UP: Connect to 82443GX; DP: Connect CPUs and 82443GX.

 

 

EMI

Connect to GND.

 

 

FERR#

UP: Connect to PIIX4E, 220 ohm pull-up to 2.5V.

DP: Connect CPUs and PIIX4E, 220 ohm pull-up to 2.5V.

 

 

 

FLUSH#

UP: 510 ohm pull-up to 2.5V. DP: Connect CPUs and 510 ohm pull-up.

 

 

FRCERR#

Leave as NC.

 

 

HIT#

Connect between CPUs and 82443GX.

 

 

HITM#

Connect between CPUs and 82443GX.

 

 

IERR#

Leave as NC.

 

 

IGNNE#

UP: 330 ohm pull-up to 2.5V. Connected to bus frequency strapping circuit. DP: Connect

CPUs, bus frequency strapping unit, and 330 ohm pull-up to 2.5V.

 

 

 

INIT#

UP: Connect to PIIX4E, 330 ohm pull-up to 2.5V.

DP: Connect CPUs and PIIX4E, 330 ohm pull-up to 2.5V.

 

 

 

LINT[1:0]

UP: 150 ohm - 330 ohm pull-up to 2.5V. DP: Connect CPUs and 150 ohm - 330 ohm pull-

up to 2.5V.

 

 

 

LOCK#

UP: Connect to 82443GX; DP: Connect CPUs and 82443GX.

 

 

PICCLK

Connect to CK100. 22 ohm series resistor.

 

 

PICD[1:0]

UP: 150 ohm pull-up to 2.5V. DP: Connect CPUs and IOAPIC and 150 ohm pull-up to

2.5V.

 

 

 

PRDY#

240 ohm series resistor to ITP.

 

 

PREQ#

Connected to ITP. 330 ohm pull-up to 2.5V.

 

 

PWRGOOD

UP: Requires 330 ohm pull-up to 2.5V. DP: Connect between CPUs.

 

 

REQ[4:0]#

UP: Connect to 82443GX; DP: Connect CPUs and 82443GX.

 

 

RESET#

UP: Connect to 82443GX, 240 ohm series resistor to ITP.

DP: Connect CPUs and ITP with 240 ohm series resistor.

 

 

 

RP#

Leave as NC.

 

 

RS[2:0]#

UP: Connect to 82443GX; DP: Connect CPUs and 82443GX.

 

 

RSP#

Leave as NC.

 

 

SLOTOCC#

UP: Tie to GND.

DP: Part of PWRGD logic, 8.2K ohm pull-up to 3.3V.

 

 

 

SLP#

UP: 150 ohm - 330 ohm pull-up to 2.5V. Connect to PIIX4E.

DP: Connect CPUs and PIIX4E with 150 ohm - 330 ohm pull-up to 2.5V.

 

 

 

 

UP: Connect to PIIX4E, 430 ohm pull-up to 2.5V.

SMI#

DP: Connect CPUs and run to jumper on APC_SMI# and PX4_SMI# (on IOAPIC). 430

 

ohm pull-up to 2.5V.

 

 

STPCLK#

UP: Connect to PIIX4E, 430 ohm pull-up to 2.5V.

DP: Connect CPUs and PIIX4E, 430 ohm pull-up.

 

 

 

TCK

UP: 1K ohm pull-up to 2.5V. 47 ohm series resistor to ITP. DP: Separate series resistors

then hooked together to ITP. 1K ohm pull-up to 2.5V.

 

 

 

Intel®440GX AGPset Design Guide

3-3

Page 62 Page 64
Page 63
Image 63
Intel 440GX manual Slot Connectivity Sheet 2
Page 62 Page 64

440GX specifications

The Intel 440GX chipset was launched in 1997 as part of Intel's series of chipsets known as the 440 family, and it served as a critical component for various Pentium II and Pentium III-based motherboard architectures. Specifically designed for the second generation of Intel’s processors, the 440GX delivered enhanced performance and supported a range of important technologies that defined PC architectures of its time.

One of the main features of the Intel 440GX was its support for a 100 MHz front-side bus (FSB), which significantly improved data transfer rates between the CPU and the memory subsystem. This advancement allowed the 440GX to accommodate both the original Pentium II processors as well as the later Pentium III chips, providing compatibility and flexibility for system builders and consumers alike.

The 440GX chipset included an integrated AGP (Accelerated Graphics Port) controller, which supported AGP 2x speeds. This enabled high-performance graphics cards to be utilized effectively, delivering many enhanced graphics capabilities for gaming and multimedia applications. The AGP interface was crucial at the time as it offered a dedicated pathway for graphics data, increasing bandwidth compared to traditional PCI slots.

In terms of memory support, the 440GX could address up to 512 MB of SDRAM, allowing systems built with this chipset to run comfortably with sufficient memory for the era’s demanding applications. The memory controller was capable of supporting both single and double-sided DIMMs, which provided versatility in memory configuration for system builders.

Another notable feature of the Intel 440GX was its support for multi-processor configurations through its Dual Processors support feature. This allowed enterprise and workstation computers to leverage the performance advantages of multiple CPUs, making the chipset suitable for business and professional environments where multitasking and high-performance computing were essential.

On the connectivity front, the chipset supported up to six PCI slots, enhancing peripheral device integration and expansion capabilities. It also included integrated IDE controllers, facilitating connections for hard drives and CD-ROM devices.

Overall, the Intel 440GX chipset represented a balanced combination of performance, flexibility, and technology advancements for its time. Its introduction helped establish a foundation for subsequent advancements in PC technology and set the stage for more powerful computing systems in the years to come.
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