Networking Silicon — GD82559ER

Bit(s)

Name

 

Description

Default

R/W

 

 

 

 

 

 

 

 

 

 

8

Polarity

This bit indicates 10BASE-T polarity.

--

RO

 

 

1

= Reverse polarity

 

 

 

 

0

= Normal polarity

 

 

 

 

 

 

 

7:2

Reserved

These bits are reserved and should be set to 0B.

000000

RO

 

 

 

 

 

1

Speed

This bit indicates the Auto-Negotiation result.

--

RO

 

 

1

= 100 Mbps

 

 

 

 

0

= 10 Mbps

 

 

 

 

 

 

 

0

Duplex Mode

This bit indicates the Auto-Negotiation result.

--

RO

 

 

1

= Full Duplex

 

 

 

 

0

= Half Duplex

 

 

 

 

 

 

 

 

9.3.2Register 17: PHY Unit Special Control Bit Definitions

Bit(s)

Name

 

Description

Default

R/W

 

 

 

 

 

 

 

 

 

 

 

 

15

Scrambler By-

1

= By-pass Scrambler

0

RW

 

pass

0

= Normal operations

 

 

 

 

 

 

 

 

 

 

 

14

By-pass 4B/5B

1 = 4 bit to 5 bit by-pass

0

RW

 

 

0

= Normal operation

 

 

 

 

 

 

 

 

13

Force Transmit H-

1

= Force transmit H-pattern

0

RW

 

Pattern

0

= Normal operation

 

 

 

 

 

 

 

 

 

 

 

 

12

Force 34 Transmit

1

= Force 34 transmit pattern

0

RW

 

Pattern

0

= Normal operation

 

 

 

 

 

 

 

 

 

 

 

11

Good Link

1 = 100BASE-TX link good

0

RW

 

 

0

= Normal operation

 

 

 

 

 

 

 

10

Reserved

This bit is reserved and should be set to 0b.

0

RW

 

 

 

 

 

 

9

Transmit Carrier

1

= Transmit Carrier Sense disabled

0

RW

 

Sense Disable

0

= Transmit Carrier Sense enabled

 

 

 

 

 

 

 

 

 

 

 

 

8

Disable Dynamic

1

= Dynamic Power-Down disabled

0

RW

 

Power-Down

0

= Dynamic Power-Down enabled (normal)

 

 

 

 

 

 

 

 

 

 

 

 

7

Auto-Negotiation

1

= Auto-Negotiation loopback

0

RW

 

Loopback

0

= Auto-Negotiation normal mode

 

 

 

 

 

 

 

 

 

 

 

 

6

MDI Tri-State

1

= MDI Tri-state (transmit driver tri-states)

0

RW

 

 

0

= Normal operation

 

 

 

 

 

 

 

 

5

Filter By-pass

1

= By-pass filter

0

RW

 

 

0

= Normal filter operation

 

 

 

 

 

 

 

 

4

Auto Polarity

1

= Auto Polarity disabled

0

RW

 

Disable

0

= Normal polarity operation

 

 

 

 

 

 

 

 

 

 

 

 

3

Squelch Disable

1

= 10BASE-T squelch test disable

0

RW

 

 

0

= Normal squelch operation

 

 

 

 

 

 

 

 

2

Extended

1

= 10BASE-T Extended Squelch control enabled

0

RW

 

Squelch

0

= 10BASE-T Extended Squelch control disabled

 

 

 

 

 

 

 

 

 

 

 

 

1

Link Integrity

1

= Link disabled

0

RW

 

Disable

0

= Normal Link Integrity operation

 

 

 

 

 

 

 

 

 

 

 

 

Datasheet

69

Page 75
Image 75
Intel GD82559ER manual Register 17 PHY Unit Special Control Bit Definitions

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.