SMSC LAN9311 User Manual

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

SMSC LAN9311/LAN9311i

265

Revision 1.4 (08-19-08)

 

9

Wake-On-LAN Enable (WOL_EN)
When set, the PME signal (if enabled via the PME_EN bit) will be asserted 
in accordance with the PME_IND bit upon a WOL event. When set, the 
PME_INT bit in the 

 will also be asserted 

upon a WOL event, regardless of the setting of the PME_EN bit.

R/W

0b

8:7

RO

-

6

PME Buffer Type (PME_TYPE)
When this bit is cleared, the PME pin functions as an open-drain buffer for 
use in a wired-or configuration. When set, the PME pin is a push-pull driver. 

When PME is configured as an open-drain output, the PME_POL 
field of this register is ignored and the output is always active low. 

R/W

NASR

0b

5

Wake On LAN Status (WOL_STS)
This bit indicates that a wake-up frame or magic packet was detected by the 
Host MAC. 

In order to clear this bit, it is required that the event in the Host MAC be 
cleared as well. The event sources are described in 

.

R/WC

0b

4

RO

-

3

PME Indication (PME_IND)
The PME signal can be configured as a pulsed output or a static signal, 
which is asserted upon detection of a wake-up event. When set, the PME 
signal will pulse active for 50mS upon detection of a wake-up event. When 
cleared, the PME signal is driven continuously upon detection of a wake-up 
event. 

The PME signal can be deactivated by clearing the WOL_STS bit or by 
clearing the appropriate enable.

R/W

0b

2

PME Polarity (PME_POL)
This bit controls the polarity of the PME signal. When set, the PME output 
is an active high signal. When cleared, it is active low. 

When PME is configured as an open-drain output, this field is 
ignored and the output is always active low.

R/W

NASR

0b

1

PME Enable (PME_EN)
When set, this bit enables the external PME signal pin. When cleared, the 
external PME signal is disabled.

This bit does not affect the PME_INT interrupt bit of the 

.

R/W

0b