High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

Datasheet

BITS

DESCRIPTION

TYPE

DEFAULT

 

 

 

 

1

Port 0 Transmit Flow Control Enable (TX_FC_MII)

R/W

Note 14.14

 

When the MANUAL_FC_MII bit is set, or Virtual Auto-Negotiation is

 

 

 

disabled, this bit enables/disables full-duplex Pause packets to be generated

 

 

 

on switch Port 0.

 

 

 

0: Disable flow control transmit

 

 

 

1: Enable flow control transmit

 

 

 

 

 

 

0

Port 0 Full-Duplex Manual Flow Control Select (MANUAL_FC_MII)

R/W

Note 14.15

 

This bit toggles flow control selection between manual and auto-negotiation.

 

 

 

0: If auto-negotiation is enabled, the auto-negotiation function

 

 

 

determines the flow control of switch Port 0 (RX_FC_MII and

 

 

 

TX_FC_MII values ignored). If auto-negotiation is disabled, the

 

 

 

RX_FC_MII and TX_FC_MII values are used.

 

 

 

1: TX_FC_MII and RX_FC_MII bits determine the flow control of switch

 

 

 

Port 0 when in full-duplex mode

 

 

 

 

 

 

Note 14.12 The default value of this field is determined by the BP_EN_strap_mii configuration strap. The strap value is loaded during reset and can be re-written by the EEPROM Loader. Once the EEPROM Loader re-writes the value, this register is updated with the new values. See Section 4.2.4, "Configuration Straps," on page 40 for more information.

Note 14.13 The default value of this bit is determined by multiple strap settings. The strap values are loaded during reset and can be re-written by the EEPROM Loader. Once the EEPROM Loader re-writes the values, this register is updated with the new values. Refer to Section 6.2.3, "Flow Control Enable Logic," on page 58 for additional information.

Note 14.14 The default value of this field is determined by the FD_FC_strap_mii configuration strap. The strap value is loaded during reset and can be re-written by the EEPROM Loader. Once the EEPROM Loader re-writes the value, this register is updated with the new values. See Section 4.2.4, "Configuration Straps," on page 40 for more information.

Note 14.15 The default value of this field is determined by the manual_FC_strap_mii configuration strap. The strap value is loaded during reset and can be re-written by the EEPROM Loader. Once the EEPROM Loader re-writes the value, this register is updated with the new values. See Section 4.2.4, "Configuration Straps," on page 40 for more information.

Revision 1.4 (08-19-08)

234

SMSC LAN9312

 

DATASHEET