SMSC LAN9311 Manual Do Utilizador

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

Revision 1.4 (08-19-08)

44

SMSC LAN9311/LAN9311i

 

speed_strap_2

Port 2 Speed Select Strap: Configures the default value 
for the 

 bit in 

When configured low, 10 Mbps is selected. When 
configured high, 100 Mbps is selected.

This strap also affects the default value of the following bits:

„

PHY_SPEED_SEL_LSB bit of the 

„

10BASE-T Full Duplex (bit 6) and 10BASE-T Half Duplex 
(bit 5) bits of the 

„

MODE[2:0] bits of the 

Refer to the respective register definition sections for 
additional information.

1b

duplex_strap_2

Port 2 Duplex Select Strap: Configures the default value 
for the 

 bit in the 

PHY_BASIC_CTRL_2 register (See 

). 

When configured low, half-duplex is selected. When 
configured high, full-duplex is selected.

This strap also affects the default value of the following bits:

„

PHY_DUPLEX bit of the 

„

10BASE-T Full Duplex (bit 6) of the 

„

MODE[2:0] bits of the 

Refer to the respective register definition sections for 
additional information.

1b

BP_EN_strap_2

Port 2 Backpressure Enable Strap: Configures the 
default value for the 

 bit of the 

. When configured low, backpressure is 

disabled. When configured high, backpressure is enabled.

1b

FD_FC_strap_2

Port 2 Full-Duplex Flow Control Enable Strap: 
Configures the default value of the 

 bits in the 

, 

which are used when manual full-duplex control is selected. 
When configured low, full-duplex Pause packet detection 
and generation are disabled. When configured high, full-
duplex Pause packet detection and generation are enabled.

1b