Ethernet 1000BASE-X PCS/PMA or SGMII v9.1
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141
UG155 March 24, 2008
Management Registers
R
Register 6: SGMII Auto-Negotiation Expansion
Register 7: SGMII Auto-Negotiation Next Page Transmit
MDIO Register 6: SGMII Auto-Negotiation Expansion
Table 9-24:
SGMII Auto-Negotiation Expansion (Register 6)
Bit(s)
Name
Description
Attributes
Default Value
6.15:3
Reserved
Always return 0s
returns 0s
0000000000000
6.2
Next Page
Able
Always returns a ‘1’ for this bit
since the device is Next Page Able
returns 1
1
6.1
Page
Received
1 = A new page has been received
0 = A new page has not been
received
read only
self clearing on
read
0
6.0
Reserved
Always return 0s
returns 0s
0000000
NEXT P
A
GE ABLE
P
A
GE RECEIVED
RESER
VED
15
0
Reg 6
RESER
VED
3
2
1
MDIO Register 7: SGMII Auto-Negotiation Next Page Transmit
Table 9-25:
SGMII Auto-Negotiation Next Page Transmit (Register 7)
Bit(s)
Name
Description
Attributes
Default Value
7.15
Next Page
1 = Additional Next Page(s) will follow
0 = Last page
read/
write
0
7.14
Reserved
Always returns ‘0’
returns 0
0
7.13
Message
Page
1 = Message Page
0 = Unformatted Page
read/
write
1
NEXT P
A
GE
RESER
VED
MESSA
GE P
A
GE
15 14 13 12 11
0
Reg 7
T
OGGLE
MESSA
GE CODE
A
CKNO
WLEDGE 2
10