LAN9313 Datasheet, PDF (221/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
13.1.7.7 Virtual PHY Auto-Negotiation Expansion Register (VPHY_AN_EXP)
Offset:
1D8h
Index (decimal): 6
Size:
This register is used in the Auto-Negotiation process.
32 bits
BITS
DESCRIPTION
31:16
15:5
4
3
2
RESERVED
(See Note 13.39)
RESERVED
Parallel Detection Fault
This bit indicates whether a Parallel Detection Fault has been detected. This
bit is always 0.
0: A fault hasn’t been detected via the Parallel Detection function
1: A fault has been detected via the Parallel Detection function
Link Partner Next Page Able
This bit indicates whether the link partner has next page ability. This bit is
always 0.
0: Link partner does not contain next page capability
1: Link partner contains next page capability
Local Device Next Page Able
This bit indicates whether the local device has next page ability. This bit is
always 0.
0: Local device does not contain next page capability
1: Local device contains next page capability
1 Page Received
This bit indicates the reception of a new page.
0: A new page has not been received
1: A new page has been received
0 Link Partner Auto-Negotiation Able
This bit indicates the Auto-negotiation ability of the link partner.
0: Link partner is not Auto-Negotiation able
1: Link partner is Auto-Negotiation able
TYPE
RO
RO
RO
RO
RO
RO/LH
RO
DEFAULT
-
-
0b
Note 13.40
0b
Note 13.41
0b
Note 13.41
1b
Note 13.42
1b
Note 13.43
Note 13.39 The reserved bits 31-16 are used to pad the register to 32-bits so that each register is on
a DWORD boundary. When accessed serially (through the MII management protocol), the
register is 16-bits wide.
Note 13.40 Since the Virtual PHY link partner is emulated, there is never a Parallel Detection Fault
and this bit is always 0.
Note 13.41 Next page ability is not supported by the Virtual PHY or emulated link partner.
Note 13.42 The page received bit is clear when read. It is first cleared on reset, but set shortly
thereafter when the Auto-Negotiation process is run.
Note 13.43 The emulated link partner will show Auto-Negotiation able unless Auto-Negotiation fails (no
common bits between the advertised ability and the link partner ability).
SMSC LAN9313/LAN9313i
221
DATASHEET
Revision 1.2 (04-08-08)