LAN9303MI-AKZE Datasheet, PDF (58/386 Pages) SMSC Corporation – Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII
Datasheet
Table 4.2 Soft-Strap Configuration Strap Definitions (continued)
STRAP NAME
duplex_pol_strap_0
BP_EN_strap_0
FD_FC_strap_0
manual_FC_strap_0
SQE_test_disable_strap_0
DESCRIPTION
PIN / DEFAULT
VALUE
Port 0 (External MII) Duplex Polarity Strap: This strap
determines the polarity of the P0_DUPLEX pin in MII MAC
mode and affects the default value of the following bits in
the Virtual PHY Auto-Negotiation Link Partner Base Page
Ability Register (VPHY_AN_LP_BASE_ABILITY):
DUPLEX_POL_0
„ 100BASE-X Full Duplex
„ 100BASE-X Half Duplex
„ 10BASE-T Full Duplex
„ 10BASE-T Half Duplex
Refer to Section 13.2.6.6 and Table 13.7 for more
information.
Port 0 (External MII) Backpressure Enable Strap:
1b
Configures the default value of the Port 0 Backpressure
Enable (BP_EN_0) bit of the Port 0 Manual Flow Control
Register (MANUAL_FC_0).
Port 0 (External MII) Full-Duplex Flow Control Enable 1b
Strap: Configures the default value of the Port 0 Transmit
Flow Control Enable (TX_FC_0) and Port 0 Receive Flow
Control Enable (RX_FC_0) bits in the Port 0 Manual Flow
Control Register (MANUAL_FC_0).
This strap affects the default value of the following register
bits:
„ Asymmetric Pause and Pause bits of the Virtual PHY
Auto-Negotiation Link Partner Base Page Ability Register
(VPHY_AN_LP_BASE_ABILITY)
Port 0 (External MII) Manual Flow Control Enable Strap: 0b
This strap affects the default value of the following register
bits:
„ Port 0 Full-Duplex Manual Flow Control Select
(MANUAL_FC_0) bit in the Port 0 Manual Flow Control
Register (MANUAL_FC_0)
„ Asymmetric Pause and Symmetric Pause bits of the
Virtual PHY Auto-Negotiation Advertisement Register
(VPHY_AN_ADV)
Refer to the respective register definition sections for
additional information.
Note:
In MAC mode, this strap is not used. In this mode,
the Virtual PHY is not applicable, and full-duplex
flow control must be controlled manually by the
host, based upon the external PHYs Auto-
negotiation results.
SQE Heartbeat Disable Strap: Configures the default
0b
value of the SQEOFF bit of the Virtual PHY Special
Control/Status Register
(VPHY_SPECIAL_CONTROL_STATUS) when in MII PHY
mode. It is not used in RMII PHY or MII MAC modes.
Revision 1.5 (07-08-11)
58
DATASHEET
SMSC LAN9303M/LAN9303Mi