Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
Table 3.5 Dedicated Configuration Strap Pins (continued)
BUFFER
TYPE
PIN
NAME
SYMBOL
DESCRIPTION
Port 2 Full-
Duplex Flow
Control
FD_FC_2
IS
(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.
Enable Strap
36
MANUAL_FC_2
Port 2
Manual Flow
Control
IS
(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.
Enable Strap
35
Port 0
(External MII)
Speed Select
Strap
SPEED_MII
IS
(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.
34
Refer to Section 13.1.7.6 and Table 13.6 for more
information.
See Note 3.9.
DUPLEX_POL_MII
Port 0
(External MII)
IS
(PU)
Note 3.8
Port 0(External MII) Duplex Polarity Strap:
Configures the polarity of the MII_DUPLEX pin for
Port 0.
Duplex
Polarity Strap
If MII_DUPLEX = DUPLEX_POL_MII, full-duplex is
selected.
32
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
BP_EN_MII
IS
(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.
(External MII)
Backpressure
Enable Strap
31
See Note 3.9.
SMSC LAN9313/LAN9313i
Revision 1.2 (04-08-08)
DATA3S5HEET
SMSC [ SMSC CORPORATION ]
