LAN9313 Datasheet, PDF (34/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
Table 3.5 Dedicated Configuration Strap Pins (continued)
BUFFER
PIN
NAME
SYMBOL
TYPE
DESCRIPTION
Port 1 Full-
FD_FC_1
IS
Port 1 Full-Duplex Flow Control Enable Strap:
Duplex Flow
(PU) ^{Configures the default value of the Port 1 Full-}
Control
Enable Strap
Note 3.8
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
50
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_FC_1
IS
Port 1 Manual Flow Control Enable Strap:
Manual Flow
(PU) ^{Configures the default value of the Port 1 Full-}
Control
Note 3.8 ^{Duplex Manual Flow Control Select}
Enable Strap
(MANUAL_FC_1) bit in the Port 1 Manual Flow
Control Register (MANUAL_FC_1). When latched
49
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- AUTO_MDIX_2
IS
Port 2 Auto-MDIX Enable Strap: Configures the
MDIX Enable
(PU) default value for the Auto-MDIX functionality on
43
Strap
Note 3.8 ^{Port 2. When latched low, Auto-MDIX is disabled.}
When latched high, Auto-MDIX is enabled. See
Note 3.9.
Port 2 Auto AUTO_NEG_2
IS
Port 2 Auto Negotiation Enable Strap:
Negotiation
(PU) ^{Configures the default value for the Auto-}
Enable Strap
42
Note 3.8 ^{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
SPEED_2
IS
Port 2 Speed Select Strap: Configures the default
Select Strap
(PU) ^{value for the Speed Select LSB}
Note 3.8 ^{(PHY_SPEED_SEL_LSB) bit in the}
41
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 DUPLEX_2
IS
Port 2 Duplex Select Strap: Configures the
Select Strap
(PU) default value for the Duplex Mode (PHY_DUPLEX)
38
Note 3.8 ^{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
BP_EN_2
IS
Port 2 Backpressure Enable Strap: Configures
Backpressure
(PU) ^{the default value for the Port 2 Backpressure}
37
Enable Strap
Note 3.8 ^{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.
Revision 1.2 (04-08-08)
34
DATASHEET
SMSC LAN9313/LAN9313i