R

Chapter 9: Configuration and Status

Table 9-10:Auto-Negotiation Next Page Receive (Register 8) (Continued)

Bit(s)

Name

 

Description

Attributes

Default Value

 

 

 

 

 

 

8.12

Acknowledge 2

1

= Comply with message

read only

0

 

 

0

= Cannot comply with message

 

 

 

 

 

 

 

8.11

Toggle

Value toggles between subsequent

read only

0

 

 

Next Pages

 

 

 

 

 

 

 

8.10:0

Message /

Message Code Field or Unformatted

read only

00000000000

 

Unformatted

Page Encoding as dictated by 8.13

 

 

 

Code Field

 

 

 

 

 

 

 

 

 

 

Register 15: Extended Status

MDIO Register 15: Extended Status Register

15

14

13

12

11

0

 

 

 

 

 

 

Reg 15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1000BASE-X

1000BASE-X

1000BASE-T

1000BASE-T

 

RESERVED

 

FULL DUPLEX

HALF DUPLEX

FULL DUPLEX

HALF DUPLEX

 

 

Table 9-11:Extended Status Register (Register 15)

Bit(s)

Name

Description

Attributes

Default Value

 

 

 

 

 

15.15

1000BASE-X

Always returns a ‘1’ for this bit since

returns 1

1

 

Full Duplex

1000BASE-X Full Duplex is

 

 

 

 

supported

 

 

 

 

 

 

 

15.14

1000BASE-X

Always returns a ‘0’ for this bit since

returns 0

0

 

Half Duplex

1000BASE-X Half Duplex is not

 

 

 

 

supported

 

 

 

 

 

 

 

15.13

1000BASE-T

Always returns a ‘0’ for this bit since

returns 0

0

 

Full Duplex

1000BASE-T Full Duplex is not

 

 

 

 

supported

 

 

 

 

 

 

 

15.12

1000BASE-T

Always returns a ‘0’ for this bit since

returns 0

0

 

Half Duplex

1000BASE-T Half Duplex is not

 

 

 

 

supported

 

 

 

 

 

 

 

15:11:0

Reserved

Always return 0s

returns 0s

000000000000

 

 

 

 

 

128

www.xilinx.com

Ethernet 1000BASE-X PCS/PMA or SGMII v9.1

 

 

UG155 March 24, 2008

Page 128
Image 128
Xilinx 1000BASE-X manual Mdio Register 15 Extended Status Register, 11Extended Status Register Register