LAN9353 Datasheet, PDF (199/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
9.3.5.7 Port x Virtual PHY Auto-Negotiation Expansion Register (VPHY_AN_EXP_x)
Offset:
PORT0: 1D8h
PORT1: 0D8h
Index (decimal): 6
This register is used in the Auto-Negotiation process.
Size:
32 bits
16 bits
Bits
31:16
15:5
4
Description
RESERVED
(See Note 59)
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
3
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
2
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 60
0b
Note 61
0b
Note 61
1b
Note 62
1b
Note 63
Note 59: The reserved bits 31-16 are used to pad the register to 32-bits so that each register is on a DWORD bound-
ary. When accessed serially (through the MII management protocol), the register is 16-bits wide.
Note 60: Since the Virtual PHY link partner is emulated, there is never a Parallel Detection Fault and this bit is always
0.
Note 61: Next page ability is not supported by the Virtual PHY or emulated link partner.
Note 62: 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 63: 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).
 2015 Microchip Technology Inc.
DS00001925A-page 199