Motherboard Description

1.12.2Memory/Expansion Connectors

The AP440FX motherboard has four 72-pin SIMM sockets for main memory. These sockets accept standard SIMM 72-pin modules, as long as they satisfy the requirements described in the “Main System Memory” section of this specification, starting on page 12.

The AP440FX motherboard uses a PCI/ISA riser connector (J6J2) to provide for expansion PCI or ISA boards. The associated riser board can support either two or three PCI slots. A pair of jumpers on the AP440FX motherboard must be set to define the number of PCI slots on the riser board. Refer to Figure 8 on page 35 for jumper block details. Table 7 shows the pinout listing for the PCI/ISA riser connector.

Table 7. PCI/ISA Riser Connector (J6J2)

Pin

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

A14

A15

A16

A17

A18

Signal Name

Pin

IOCHK#

B1

SD7

B2

SD6

B3

SD5

B4

SD4

B5

SD3

B6

SD2

B7

SD1

B8

SD0

B9

IOCHRDY

B10

AEN

B11

SA19

B12

SA18

B13

SA17

B14

SA16

B15

SA15

B16

SA14

B17

SA13

B18

Signal Name

Pin

GND

E1

RSTDRV

E2

Vcc

E3

IRQ9

E4

-5 V

E5

DRQ2

E6

-12 V

E7

0WS#

E8

+12 V

E9

GND

E10

SMEMW#

E11

SMEMR#

E12

IOW#

E13

IOR#

E14

DACK3#

E15

DRQ3

E16

DACK1#

E17

DRQ1

E18

Signal

Pin

GND

F1

GND

F2

PCIINT1#

F3

PCIIINT2#

F4

Vcc

F5

Key

F6

Vcc

F7

PCIRST#

F8

GNT0#

F9

REQ0#

F10

GND

F11

PCKLE

F12

GND

F13

AD30

F14

3.3 V

F15

Key

F16

3.3 V

F17

AD28

F18

Signal Name

GND

GND

PCIINT3#

PCIINT4#

Vcc

Key

Vcc

PCKLF

GND

GNT1#

GND

REQ1#

AD31

AD29

3.3V

Key

3.3V AD27

continued

25

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Image 25
Intel AP440FX specifications Memory/Expansion Connectors, PCI/ISA Riser Connector J6J2, Signal Name Pin, Signal Pin

AP440FX specifications

The Intel AP440FX is a pivotal motherboard that was released in the late 1990s, designed to support the Intel Pentium II and Pentium III processors. Known for its robust performance and versatile functionalities, the AP440FX became a popular choice among computer enthusiasts and system builders during its time.

One of the defining features of the Intel AP440FX is its support for the Intel 440FX chipset. This chipset provided improved system performance through its use of a 66 MHz front-side bus, which allowed for faster data transfer between the CPU and the memory. The motherboard was equipped with two DIMM slots capable of supporting a maximum of 512 MB of SDRAM, providing users with the flexibility to choose the amount of memory they required for their applications.

Another notable characteristic of the AP440FX motherboard is its integrated support for various peripheral interfaces. It comes equipped with multiple ISA and PCI slots, allowing users to expand their system capabilities through the addition of various cards. The presence of two USB ports, which were relatively new at the time of its release, gave users access to a wider range of peripherals and external devices.

The Intel AP440FX also features an integrated IDE controller, enabling connection for hard drives and optical drives without the need for additional controller cards. This integrated solution simplified storage management for users and contributed to the overall efficiency of the system. The motherboard also supported SCSI through optional daughter cards, catering to users who required high-speed data transfer and reliable disk storage solutions.

Moreover, the AP440FX was designed with future upgrades in mind. Its BIOS supported plug-and-play installations, allowing users to easily configure new hardware components without extensive troubleshooting. Additionally, the ATX form factor of the motherboard contributed to its compatibility with a wide range of cases and power supplies.

In terms of power management, the Intel AP440FX incorporated advanced features such as ACPI (Advanced Configuration and Power Interface), which allowed for better power efficiency and management of power states. This feature was particularly beneficial for users looking to reduce energy consumption and improve the overall longevity of their systems.

All in all, the Intel AP440FX represented a significant advancement in motherboard technology during its era. Its combination of robust performance, upgradeability, and support for new technologies made it a popular choice for users looking to build powerful and efficient computing systems.