lan9313 Standard Microsystems Corp., lan9313 Datasheet - Page 47

• Manufacturer Part Number: lan9313
• Description: Lan9313/lan9313i Three Port 10/100 Managed Ethernet Switch With Mii
• Manufacturer: Standard Microsystems Corp.

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
SMSC LAN9313/LAN9313i
STRAP NAME
duplex_strap_1
BP_EN_strap_1
FD_FC_strap_1
manual_FC_strap_1
auto_mdix_strap_2
manual_mdix_strap_2
Table 4.2 Soft-Strap Configuration Strap Definitions (continued)
DESCRIPTION
Port 1 Duplex Select Strap: Configures the default value
for the
PHY_BASIC_CTRL_1 register (See
When configured low, half-duplex is selected. When
configured high, full-duplex is selected.
This strap also affects the default value of the following bits:
Refer to the respective register definition sections for
additional information.
Port 1 Backpressure Enable Strap: Configures the
default value for the
(BP_EN_1)
(MANUAL_FC_1). When configured low, backpressure is
disabled. When configured high, backpressure is enabled.
Port 1 Full-Duplex Flow Control Enable Strap:
Configures the default value of the
Transmit Flow Control Enable (TX_FC_1)
Duplex Receive Flow Control Enable (RX_FC_1)
Port 1 Manual Flow Control Register
which are used when manual full-duplex control is selected.
When configured low, full-duplex Pause packet detection
and generation are disabled. When configured high, full-
duplex Pause packet detection and generation are enabled.
Port 1 Manual Flow Control Enable Strap: Configures the
default value of the
Select (MANUAL_FC_1)
Control Register
flow control is determined by auto-negotiation (if enabled),
and symmetric PAUSE is advertised (bit 10 of the
PHY Auto-Negotiation Advertisement Register
(PHY_AN_ADV_x)
When configured high, flow control is determined by the
Port 1 Full-Duplex Transmit Flow Control Enable
(TX_FC_1)
Enable (RX_FC_1)
advertised (bit 10 of the
Advertisement Register (PHY_AN_ADV_x)
Port 2 Auto-MDIX Enable Strap: Configures the default
value for the Auto-MDIX functionality on Port 2 when the
AMDIXCTL bit in the
Indication Register
(PHY_SPECIAL_CONTROL_STAT_IND_x)
When configured low, Auto-MDIX is disabled. When
configured high, Auto-MDIX is enabled.
Note:
Port 2 Manual MDIX Strap: Configures MDI(0) or MDIX(1)
for Port 2 when the auto_mdix_strap_2 is low and the
AMDIXCTL bit of the
Indication Register
(PHY_SPECIAL_CONTROL_STAT_IND_x)
PHY_DUPLEX bit of the
Register (PHY_BASIC_CONTROL_x)
10BASE-T Full Duplex (bit 6) of the
Negotiation Advertisement Register (PHY_AN_ADV_x)
MODE[2:0] bits of the
(PHY_SPECIAL_MODES_x)
Duplex Mode (PHY_DUPLEX)
If AMDIXCTL is set, this strap had no effect.
and
bit of the
DATASHEET
Port 1 Full-Duplex Receive Flow Control
(MANUAL_FC_1). When configured low,
Port 1 Full-Duplex Manual Flow Control
is set).
bits, and symmetric PAUSE is not
Port 1 Backpressure Enable
Port 1 Manual Flow Control Register
Port x PHY Special Control/Status
Port x PHY Special Control/Status
Port x PHY Special Modes Register
47
Port x PHY Auto-Negotiation
bit in the
Port x PHY Basic Control
Port 1 Manual Flow
Port 1 Full-Duplex
Section
(MANUAL_FC_1),
bit in the
Port x PHY Auto-
and
is cleared).
is cleared.
is cleared.
13.2.2.1).
Port 1 Full-
bits in the
Port x
PIN / DEFAULT
VALUE
DUPLEX_1
BP_EN_1
FD_FC_1
MANUAL_FC_1
AUTO_MDIX_2
0b
Revision 1.2 (04-08-08)