LAN9303 Datasheet, PDF (157/366 Pages) SMSC Corporation – Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII
Datasheet
BITS
DESCRIPTION
TYPE
0 Port 0 Full-Duplex Manual Flow Control Select (MANUAL_FC_0)
R/W
This bit toggles flow control selection between manual and auto-negotiation. Note 13.15
0: If auto-negotiation is enabled, the auto-negotiation function
determines the flow control of switch Port 0 (RX_FC_0 and TX_FC_0
values ignored). If auto-negotiation is disabled, the RX_FC_0 and
TX_FC_0 values are used.
1: TX_FC_0 and RX_FC_0 bits determine the flow control of switch Port
0 when in full-duplex mode
Note:
In MAC mode, this bit is forced high. The Virtual PHY is not
applicable in this mode and full-duplex flow control should be
controlled manually by the host based on the external PHYs Auto-
Negotiation results.
DEFAULT
Note 13.16
Note 13.12 The default value of this field is determined by the BP_EN_strap_0 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 45 for more information.
Note 13.13 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 62 for additional information.
Note 13.14 The default value of this field is determined by the FD_FC_strap_0 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 45 for more information.
Note 13.15 This bit is RO when in MAC mode.
Note 13.16 The default value of this field is determined by the manual_FC_strap_0 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. In
MAC mode, this bit is not re-written by the EEPROM Loader and has a default value of
“1”. See Section 4.2.4, "Configuration Straps," on page 45 for more information.
SMSC LAN9303/LAN9303i
157
DATASHEET
Revision 1.3 (08-27-09)