LAN9250 datasheet(57/421 Pages) MICROCHIP

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DS00001913A-page 57

LAN9250

speed_strap_1

PHY Speed Select Strap:

This strap affects the default value

of the following register bits:

• Speed Select LSB (PHY_SPEED_SEL_LSB) bit of the

PHY Basic Control Register (PHY_BASIC_CONTROL)

• 10BASE-T Full Duplex and 10BASE-T Half Duplex bits of

the PHY Auto-Negotiation Advertisement Register

(PHY_AN_ADV)

• PHY Mode (MODE[2:0]) bits of the PHY Special Modes

Note:

This has no effect when the PHY is in 100BASE-FX

mode.

Refer to the respective register definition sections for addi-

tional information.

duplex_strap_1

PHY Duplex Select Strap:

This strap affects the default value

of the following register bits:

• Duplex Mode (PHY_DUPLEX) bit of the PHY Basic Con-

trol Register (PHY_BASIC_CONTROL)

• 10BASE-T Full Duplex bit of the PHY Auto-Negotiation

Advertisement Register (PHY_AN_ADV)

• PHY Mode (MODE[2:0]) bits of the PHY Special Modes

Refer to the respective register definition sections for addi-

tional information.

FD_FC_strap_1

PHY Full-Duplex Flow Control Enable Strap:

This strap

affects the default value of the following register bits:

• Asymmetric Pause bit of the PHY Auto-Negotiation

Advertisement Register (PHY_AN_ADV)

Note:

This has no effect when the PHY is in 100BASE-FX

mode.

Refer to the respective register definition sections for addi-

tional information.

manual_FC_strap_1

PHY Manual Flow Control Enable Strap:

This strap affects

the default value of the following register bits:

• Asymmetric Pause and Symmetric Pause bit of the PHY

Auto-Negotiation Advertisement Register

(PHY_AN_ADV)

Note:

This has no effect when the PHY is in 100BASE-FX

mode.

Refer to the respective register definition sections for addi-

tional information.

TABLE 7-1:

SOFT-STRAP CONFIGURATION STRAP DEFINITIONS (CONTINUED)

Strap Name

Description

Pin / Default Value

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