Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII
Datasheet
13.2.6.6
Virtual PHY Auto-Negotiation Link Partner Base Page Ability Register (VPHY_AN_LP_BASE_ABILITY)
Offset:
Index (decimal):
1D4h
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
TYPE
DEFAULT
31:16
RESERVED
(See Note 13.35)
RO
-
15
14
13
Next Page
RO
RO
RO
0b
This bit indicates the emulated link partner PHY next page capability and is
always 0.
Note 13.36
0: Link partner PHY does not advertise next page capability
1: Link partner PHY advertises next page capability
Acknowledge
1b
This bit indicates whether the link code word has been received from the
partner and is always 1.
Note 13.36
0: Link code word not yet received from partner
1: Link code word received from partner
Remote Fault
0b
Since there is no physical link partner, this bit is not used and is always
returned as 0.
Note 13.36
12
11
RESERVED
RO
RO
-
Asymmetric Pause
This bit indicates the emulated link partner PHY asymmetric pause
capability.
Note 13.37
0: No Asymmetric PAUSE toward link partner
1: Asymmetric PAUSE toward link partner
10
9
Pause
RO
RO
Note 13.37
This bit indicates the emulated link partner PHY symmetric pause capability.
0: No Symmetric PAUSE toward link partner
1: Symmetric PAUSE toward link partner
100BASE-T4
0b
This bit indicates the emulated link partner PHY 100BASE-T4 capability.
This bit is always 0.
Note 13.36
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.
RO
Note 13.38
0: 100BASE-X full duplex ability not supported
1: 100BASE-X full duplex ability supported
Revision 1.3 (08-27-09)
178
SMSC LAN9303/LAN9303i
DATASHEET
SMSC [ SMSC CORPORATION ]
