LAN9313 datasheet(34/398 Pages) SMSC

34 / 398 page

Three Port 10/100 Managed Ethernet Switch with MII

Datasheet

Revision 1.2 (04-08-08)

SMSC LAN9313/LAN9313i

DATASHEET

Port 1 Full-

Duplex Flow

Control

Enable Strap

FD_FC_1

(PU)

Note 3.8

Port 1 Full-Duplex Flow Control Enable Strap:

Configures the default value of the Port 1 Full-

Duplex Transmit Flow Control Enable (TX_FC_1)

and Port 1 Full-Duplex Receive Flow Control

Enable (RX_FC_1) bits in the Port 1 Manual Flow

Control Register (MANUAL_FC_1), 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 1

Manual Flow

Control

Enable Strap

MANUAL_FC_1

(PU)

Note 3.8

Port 1 Manual Flow Control Enable Strap:

Configures the default value of the Port 1 Full-

Duplex Manual Flow Control Select

(MANUAL_FC_1) bit in the Port 1 Manual Flow

Control Register (MANUAL_FC_1). When latched

low, flow control is determined by auto-negotiation.

When latched high, flow control is determined by

the Port 1 Full-Duplex Transmit Flow Control

Enable (TX_FC_1) and Port 1 Full-Duplex Receive

Flow Control Enable (RX_FC_1) bits. See

Note 3.9.

Port 2 Auto-

MDIX Enable

Strap

AUTO_MDIX_2

(PU)

Note 3.8

Port 2 Auto-MDIX Enable Strap: Configures the

default value for the Auto-MDIX functionality on

Port 2. When latched low, Auto-MDIX is disabled.

When latched high, Auto-MDIX is enabled. See

Note 3.9.

Port 2 Auto

Negotiation

Enable Strap

AUTO_NEG_2

(PU)

Note 3.8

Port 2 Auto Negotiation Enable Strap:

Configures the default value for the Auto-

Negotiation (PHY_AN) enable bit in the

PHY_BASIC_CTRL_2 register (See

Section 13.2.2.1). When latched low, auto-

negotiation is disabled. When latched high, auto-

negotiation is enabled. See Note 3.9.

Port 2 Speed

Select Strap

SPEED_2

(PU)

Note 3.8

Port 2 Speed Select Strap: Configures the default

value for the Speed Select LSB

(PHY_SPEED_SEL_LSB) bit in the

PHY_BASIC_CTRL_2 register (See

Section 13.2.2.1). When latched low, 10 Mbps is

selected. When latched high, 100 Mbps is selected.

See Note 3.9.

Port 2 Duplex

Select Strap

DUPLEX_2

(PU)

Note 3.8

Port 2 Duplex Select Strap: Configures the

default value for the Duplex Mode (PHY_DUPLEX)

bit in the PHY_BASIC_CTRL_2 register (See

Section 13.2.2.1). When latched low, half-duplex is

selected. When latched high, full-duplex is

selected. See Note 3.9.

Port 2

Backpressure

Enable Strap

BP_EN_2

(PU)

Note 3.8

Port 2 Backpressure Enable Strap: Configures

the default value for the Port 2 Backpressure

Enable (BP_EN_2) bit of the Port 2 Manual Flow

Control Register (MANUAL_FC_2). 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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