SMSC LAN9311 User Manual

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

Revision 1.4 (08-19-08)

232

SMSC LAN9311/LAN9311i

 

This read/write register allows for the manual configuration of the switch Port 2 flow control. This
register also provides read back of the currently enabled flow control settings, whether set manually
or Auto-Negotiated. Refer to 

 for additional

information.

The flow control values in the PHY_AN_ADV_2 register (see 

)

within the PHY are not affected by the values of this register.

Offset:

1A4h

Size:

32 bits

31:7

RO

-

6

Port 2 Backpressure Enable (BP_EN_2)
This bit enables/disables the generation of half-duplex backpressure on 
switch Port 2.

R/W

5

Port 2 Current Duplex (CUR_DUP_2)
This bit indicates the actual duplex setting of switch Port 2. 

RO

4

Port 2 Current Receive Flow Control Enable (CUR_RX_FC_2)
This bit indicates the actual receive flow setting of switch Port 2.

RO

3

Port 2 Current Transmit Flow Control Enable (CUR_TX_FC_2)
This bit indicates the actual transmit flow setting of switch Port 2.

RO

2

Port 2 Full-Duplex Receive Flow Control Enable (RX_FC_2)
When the MANUAL_FC_2 bit is set, or Auto-Negotiation is disabled, this bit 
enables/disables the detection of full-duplex Pause packets on switch Port 2.

R/W

1

Port 2 Full-Duplex Transmit Flow Control Enable (TX_FC_2)
When the MANUAL_FC_2 bit is set, or Auto-Negotiation is disabled, this bit 
enables/disables full-duplex Pause packets to be generated on switch Port 
2.

R/W

0

Port 2 Full-Duplex Manual Flow Control Select (MANUAL_FC_2)
This bit toggles flow control selection between manual and auto-negotiation. 

R/W