Networking Silicon — GD82559ER

All accesses, either read or write, are preceded by a command instruction to the device. The address field is six bits for a 64 register EEPROM or eight bits for a 256 register EEPROM. The end of the address field is indicated by a dummy zero bit from the EEPROM, which indicates the entire address field has been transferred to the device. An EEPROM read instruction waveform is shown in the figure below.

E E S K

 

 

 

 

 

 

E E C S

 

 

 

 

 

 

A 5

A 4

A 3

A 2

A 1

A 0

 

E E D I

 

 

 

 

 

 

READ OP code

 

 

 

 

 

 

E E D O

 

 

 

 

D 1 5

D 0

 

 

 

 

 

 

Figure 11. 64 Word EEPROM Read Instruction Waveform

The 82559ER performs an automatic read of seven words (0H, 1H, 2H, AH, Bh, Ch and DH) of the EEPROM after the de-assertion of Reset.

The 82559ER EEPROM format is shown below in Figure 12.

Word

15

 

14

13

12

11

10

9

8

7

 

6

5

4

 

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0H

 

 

 

 

IA Byte 2

 

 

 

 

 

 

 

IA Byte 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1H

 

 

 

 

IA Byte 4

 

 

 

 

 

 

 

IA Byte 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2H

 

 

 

 

IA Byte 6

 

 

 

 

 

 

 

IA Byte 5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AH

 

Sig

ID

0b

BD

 

Rev ID

 

1b

 

DPD

0b

 

00b

0b

STB

0b

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ena

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BH

 

 

 

 

 

 

 

Subsystem ID

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CH

 

 

 

 

 

 

 

Subsystem Vendor ID

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DH

 

 

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 12. 82559ER EEPROM Format

Datasheet

29

Page 35
Image 35
Intel GD82559ER manual Word IA Byte, Subsystem ID

GD82559ER specifications

The Intel GD82559ER is a highly regarded network interface controller (NIC) designed for use in various computing environments, primarily for stable connectivity in both desktop and server applications. Released as part of the 82559 family of Ethernet controllers, the GD82559ER features advanced technologies that enhance performance, reliability, and manageability.

One of the standout features of the 82559ER is its ability to support both 10/100 Mbps Ethernet. This dual capability allows the controller to operate in a wide range of network settings, making it adaptable to legacy systems while also providing support for modern Ethernet standards. This versatility is crucial for organizations looking to maintain operational effectiveness without the need for immediate upgrades to their existing infrastructure.

The GD82559ER employs a PCI interface, which allows it to connect with various devices and motherboards easily, making it a go-to choice for manufacturers aiming for integration in their systems. It also includes features like Auto-Negotiation, enabling the NIC to automatically detect and select the appropriate speed and duplex mode for optimal performance. This capability is essential in dynamic networking environments, where devices from various generations coexist.

Power management is another critical aspect of the GD82559ER. The controller supports advanced power-saving features like PCI Power Management, reducing energy consumption during low-usage periods. This not only contributes to lower operational costs but also aligns with modern eco-friendly initiatives in technology.

Additionally, the GD82559ER comes equipped with advanced diagnostics and monitoring capabilities. This enhances the network's manageability by allowing administrators to track performance metrics and diagnose issues effectively. Through its onboard diagnostics, the controller aids in ensuring a stable network connection, allowing for timely interventions when issues arise.

The controller is also designed with a robust architecture that supports various operating systems, facilitating a broad implementation across different platforms. As a result, the GD82559ER has become a reliable option for system builders and enterprises focused on building dependable networking solutions.

Overall, the Intel GD82559ER is a versatile, high-performance network interface controller that continues to serve as a foundational component for computer systems that require efficient, reliable networking capabilities. Its combination of technologies and features makes it a popular choice in diverse computing environments.