LAN9353 Datasheet, PDF (74/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
TABLE 7-1: SOFT-STRAP CONFIGURATION STRAP DEFINITIONS (CONTINUED)
Strap Name
autoneg_strap_2
Description
Pin / Default Value
PHY B Auto Negotiation Enable Strap: Configures the
1b
default value of the Auto-Negotiation Enable (PHY_AN)
enable bit in the (x=B) PHY x Basic Control Register
(PHY_BASIC_CONTROL_x).
This strap also affects the default value of the following regis-
ter bits (x=B):
speed_strap_2
• Speed Select LSB (PHY_SPEED_SEL_LSB) and Duplex
Mode (PHY_DUPLEX) bits of the PHY x Basic Control
Register (PHY_BASIC_CONTROL_x)
• 10BASE-T Full Duplex and 10BASE-T Half Duplex bits of
the PHY x Auto-Negotiation Advertisement Register
(PHY_AN_ADV_x)
• PHY Mode (MODE[2:0]) bits of the PHY x Special Modes
Register (PHY_SPECIAL_MODES_x)
Note: This has no effect when the PHY is in 100BASE-FX
mode.
Refer to the respective register definition sections for addi-
tional information.
PHY B Speed Select Strap: This strap affects the default
1b
value of the following register bits (x=B):
duplex_strap_2
• Speed Select LSB (PHY_SPEED_SEL_LSB) bit of the
PHY x Basic Control Register (PHY_BASIC_CON-
TROL_x)
• 10BASE-T Full Duplex and 10BASE-T Half Duplex bits of
the PHY x Auto-Negotiation Advertisement Register
(PHY_AN_ADV_x)
• PHY Mode (MODE[2:0]) bits of the PHY x Special Modes
Register (PHY_SPECIAL_MODES_x)
Note: This has no effect when the PHY is in 100BASE-FX
mode.
Refer to the respective register definition sections for addi-
tional information.
PHY B Duplex Select Strap: This strap affects the default
1b
value of the following register bits (x=B):
• Duplex Mode (PHY_DUPLEX) bit of the PHY x Basic
Control Register (PHY_BASIC_CONTROL_x)
• 10BASE-T Full Duplex bit of the PHY x Auto-Negotiation
Advertisement Register (PHY_AN_ADV_x)
• PHY Mode (MODE[2:0]) bits of the PHY x Special Modes
Register (PHY_SPECIAL_MODES_x)
Refer to the respective register definition sections for addi-
tional information.
DS00001925A-page 74
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