SMSC LAN9311 User Manual

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

SMSC LAN9311/LAN9311i

247

Revision 1.4 (08-19-08)

 

This read/write register is used to configure the Virtual PHY.

This register is re-written in its entirety by the EEPROM Loader following the release or reset
or a RELOAD command. Refer to 

information.

Offset:
Index (decimal):

1C0h
0

Size:

32 bits

31:16

RESERVED 
(See 

)

RO

-

15

Reset (VPHY_RST)
When set, this bit resets all the Virtual PHY registers to their default state. 
This bit is self clearing.

R/W

SC

0b

14

Loopback (VPHY_LOOPBACK)
This bit enables/disables the loopback mode. When enabled, transmissions 
from the Host MAC are not sent to the switch fabric. Instead, they are looped 
back onto the receive path.

R/W

0b

13

Speed Select LSB (VPHY_SPEED_SEL_LSB)
This bit is used to set the speed of the Virtual PHY when the 

 bit is disabled.

R/W

0b

12

Auto-Negotiation (VPHY_AN)
This bit enables/disables Auto-Negotiation. When enabled, the 

 and 

 bits 

are overridden.

R/W

1b

11

Power Down (VPHY_PWR_DWN)
This bit is not used by the Virtual PHY and has no effect.

R/W

0b

10

Isolate (VPHY_ISO)
This bit is not used by the Virtual PHY and has no effect.

R/W

0b

9

Restart Auto-Negotiation (VPHY_RST_AN)
When set, this bit updates the emulated Auto-Negotiation results.

R/W

SC

0b

8

Duplex Mode (VPHY_DUPLEX)
This bit is used to set the duplex when the 

 bit 

is disabled.

R/W

0b