LAN9313 datasheet(35/398 Pages) SMSC

35 / 398 page

Three Port 10/100 Managed Ethernet Switch with MII

Datasheet

SMSC LAN9313/LAN9313i

Revision 1.2 (04-08-08)

DATASHEET

Port 2 Full-

Duplex Flow

Control

Enable Strap

FD_FC_2

(PU)

Note 3.8

Port 2 Full-Duplex Flow Control Enable Strap:

Configures the default value of the Port 2 Full-

Duplex Transmit Flow Control Enable (TX_FC_2)

and Port 2 Full-Duplex Receive Flow Control

Enable (RX_FC_2) bits in the Port 2 Manual Flow

Control Register (MANUAL_FC_2), which are used

when manual full-duplex control is selected. When

latched low, full-duplex Pause packet detection and

generation are disabled. When latched high, full-

duplex Pause packet detection and generation are

enabled. See Note 3.9.

Port 2

Manual Flow

Control

Enable Strap

MANUAL_FC_2

(PU)

Note 3.8

Port 2 Manual Flow Control Enable Strap:

Configures the default value of the Port 2 Full-

Duplex Manual Flow Control Select

(MANUAL_FC_2) bit in the Port 2 Manual Flow

Control Register (MANUAL_FC_2). When latched

low, flow control is determined by auto-negotiation.

When latched high, flow control is determined by

the Port 2 Full-Duplex Transmit Flow Control

Enable (TX_FC_2) and Port 2 Full-Duplex Receive

Flow Control Enable (RX_FC_2) bits. See

Note 3.9.

Port 0

(External MII)

Speed Select

Strap

SPEED_MII

(PU)

Note 3.8

Port 0(External MII) Speed Select Strap:

Together with the DUPLEX_POL_MII and

MII_DUPLEX pins, configures the base ability

values in the Virtual PHY Auto-Negotiation Link

Partner Base Page Ability Register

(VPHY_AN_LP_BASE_ABILITY).

This pin also configures the speed for Port 0 when

the Virtual Auto-Negotiation fails. When latched

low, 10Mbps is selected. When latched high,

100Mbps is selected.

Refer to Section 13.1.7.6 and Table 13.6 for more

information.

See Note 3.9.

Port 0

(External MII)

Duplex

Polarity Strap

DUPLEX_POL_MII

(PU)

Note 3.8

Port 0(External MII) Duplex Polarity Strap:

Configures the polarity of the MII_DUPLEX pin for

Port 0.

If MII_DUPLEX = DUPLEX_POL_MII, full-duplex is

selected.

If MII_DUPLEX != DUPLEX_POL_MII, half-duplex

is selected.

Refer to Section 13.1.7.6 and Table 13.6 for more

information.

See Note 3.9.

Port 0

(External MII)

Backpressure

Enable Strap

BP_EN_MII

(PU)

Note 3.8

Port 0(External MII) Backpressure Enable Strap:

Configures the default value for the Port 0

Backpressure Enable (BP_EN_MII) bit of the Port

0(External MII) Manual Flow Control Register

(MANUAL_FC_MII). When latched low,

backpressure is disabled. When latched high,

backpressure is enabled.

See Note 3.9.

Table 3.5 Dedicated Configuration Strap Pins (continued)

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION

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