Management Registers

Table 9-30:SGMII Control (Register 0) (Continued)

R

Bit(s)

Name

Description

Attributes

Default

Value

 

 

 

 

 

 

 

 

 

0.5

Unidirectiona

Enable transmit regardless of

read/ write

0

 

l Enable

whether a valid link has been

 

 

 

 

established

 

 

 

 

 

 

 

0.4:0

Reserved

Always return 0s , writes ignored

returns 0s

00000

 

 

 

 

 

Register 1: SGMII Status

MDIO Register 1: SGMII Status

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reg 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100BASE-T4

100BASE-X FULL DUPLEX

100BASE-X HALF DUPLEX

10Mb/s FULL DUPLEX

10Mb/s HALF DUPLEX

100BASE-T2 FULL DUPLEX

100BASE-T2 HALF DUPLEX

EXTENDED STATUS

UNIDIRECTIONAL ANILITY

MF PREAMBLE SUPPRESSION

AUTO-NEG COMPLETE

REMOTE FAULT

AUTO-NEG ABILITY

LINK STATUS

JABBER DETECT

EXTENDED CAPABILITY

Table 9-31:SGMII Status (Register 1)

Bit(s)

Name

Description

Attributes

Default

Value

 

 

 

 

 

 

 

 

 

1.15

100BASE-T4

Always returns a ‘0’ for this bit because

returns 0

0

 

 

100BASE-T4 is not supported

 

 

 

 

 

 

 

1.14

100BASE-X Full

Always returns a ‘0’ for this bit because

returns 0

0

 

Duplex

100BASE-X Full Duplex is not supported

 

 

 

 

 

 

 

1.13

100BASE-X Half

Always returns a ‘0’ for this bit because

returns 0

0

 

Duplex

100BASE-X Half Duplex is not supported

 

 

 

 

 

 

 

1.12

10 Mbps Full Duplex

Always returns a ‘0’ for this bit because 10

returns 0

0

 

 

Mbps Full Duplex is not supported

 

 

 

 

 

 

 

1.11

10 Mbps Half Duplex

Always returns a ‘0’ for this bit because 10

returns 0

0

 

 

Mbps Half Duplex is not supported

 

 

 

 

 

 

 

1.10

100BASE-T2 Full

Always returns a ‘0’ for this bit because

returns 0

0

 

Duplex

100BASE-T2 Full Duplex is not supported

 

 

 

 

 

 

 

1.9

100BASE-T2 Half

Always returns a ‘0’ for this bit because

returns 0

0

 

Duplex

100BASE-T2 Half Duplex is not

 

 

 

 

supported

 

 

 

 

 

 

 

1.8

Extended Status

Always returns a ‘1’ for this bit to indicate

returns 1

1

 

 

the presence of the Extended Register

 

 

 

 

(Register 15)

 

 

 

 

 

 

 

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

www.xilinx.com

147

UG155 March 24, 2008

Page 147
Image 147
Xilinx 1000BASE-X manual Management Registers 30SGMII Control Register, 31SGMII Status Register