LAN9313 Datasheet, PDF (213/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
BITS
DESCRIPTION
6 MF Preamble Suppression
This bit indicates whether the Virtual PHY accepts management frames with
the preamble suppressed.
0: Management frames with preamble suppressed not accepted
1: Management frames with preamble suppressed accepted
5 Auto-Negotiation Complete
This bit indicates the status of the Auto-Negotiation process.
0: Auto-Negotiation process not completed
1: Auto-Negotiation process completed
4 Remote Fault
This bit indicates if a remote fault condition has been detected.
0: No remote fault condition detected
1: Remote fault condition detected
3 Auto-Negotiation Ability
This bit indicates the status of the Virtual PHY’s auto-negotiation.
0: Virtual PHY is unable to perform auto-negotiation
1: Virtual PHY is able to perform auto-negotiation
2 Link Status
This bit indicates the status of the link.
0: Link is down
1: Link is up
1 Jabber Detect
This bit indicates the status of the jabber condition.
0: No jabber condition detected
1: Jabber condition detected
0 Extended Capability
This bit indicates whether extended register capability is supported.
0: Basic register set capabilities only
1: Extended register set capabilities
TYPE
RO
RO
RO
RO
RO
RO
RO
DEFAULT
0b
1b
Note 13.22
0b
Note 13.23
1b
1b
Note 13.23
0b
Note 13.23
1b
Note 13.24
Note 13.19 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 13.20 The Virtual PHY supports 100BASE-X (half and full duplex) and 10BASE-T (half and full
duplex) only. All other modes will always return as 0 (unable to perform).
Note 13.21 The Virtual PHY does not support Register 15 or 1000 Mb/s operation. Thus this bit is
always returned as 0.
Note 13.22 The Auto-Negotiation Complete bit is first cleared on a reset, but set shortly after (when
the Auto-Negotiation process is run). Refer to Section 7.3.1, "Virtual PHY Auto-
Negotiation," on page 98 for additional details.
Note 13.23 The Virtual PHY never has remote faults, its link is always up, and does not detect jabber.
Note 13.24 The VIrtual PHY supports basic and some extended register capability. The Virtual PHY
supports Registers 0-6 (per the IEEE 802.3 specification).
SMSC LAN9313/LAN9313i
213
DATASHEET
Revision 1.2 (04-08-08)