LAN9311 Datasheet, PDF (255/461 Pages) SMSC Corporation – Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

14.2.8.6
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
Virtual PHY Auto-Negotiation Link Partner Base Page Ability Register (VPHY_AN_LP_BASE_ABILITY)
Offset:
1D4h
Index (decimal): 5
Size:
32 bits
This read-only register contains the advertised ability of the link partner’s PHY and is used in the Auto-
Negotiation process with the Virtual PHY. Because the Virtual PHY does not physically connect to an
actual link partner, the values in this register are emulated as described below.
BITS
DESCRIPTION
31:16
15
14
RESERVED
(See Note 14.33)
Next Page
This bit indicates the emulated link partner PHY next page capability and is
always 0.
0: Link partner PHY does not advertise next page capability
1: Link partner PHY advertises next page capability
Acknowledge
This bit indicates whether the link code word has been received from the
partner and is always 1.
0: Link code word not yet received from partner
1: Link code word received from partner
13 Remote Fault
Since there is no physical link partner, this bit is not used and is always
returned as 0.
12 RESERVED
11 Asymmetric Pause
This bit indicates the emulated link partner PHY asymmetric pause
capability.
0: No Asymmetric PAUSE toward link partner
1: Asymmetric PAUSE toward link partner
10 Pause
This bit indicates the emulated link partner PHY symmetric pause capability.
0: No Symmetric PAUSE toward link partner
1: Symmetric PAUSE toward link partner
9
100BASE-T4
This bit indicates the emulated link partner PHY 100BASE-T4 capability.
This bit is always 0.
0: 100BASE-T4 ability not supported
1: 100BASE-T4 ability supported
8
100BASE-X Full Duplex
This bit indicates the emulated link partner PHY 100BASE-X full duplex
capability.
0: 100BASE-X full duplex ability not supported
1: 100BASE-X full duplex ability supported
TYPE
RO
RO
RO
RO
RO
RO
RO
RO
RO
DEFAULT
-
0b
Note 14.34
1b
Note 14.34
0b
Note 14.34
-
Note 14.35
Note 14.35
0b
Note 14.34
Note 14.36
SMSC LAN9311/LAN9311i
255
DATASHEET
Revision 2.0 (02-14-13)