lan9313 Standard Microsystems Corp., lan9313 Datasheet - Page 33

• 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
45,47
PIN
44
56
55
53
52
51
Note 3.4
Note 3.5
Note 3.6
Note 3.7
LED Function
Port 1 Duplex
Backpressure
MDIX Enable
Port 1 Speed
Enable Strap
Enable Strap
Port 1 Auto-
Select Strap
Select Strap
LED Enable
Port 1 Auto
Negotiation
NAME
Port 1
Strap
Strap
Strap
When used as an output, the pin input buffer and pull-up are disabled.
An external pull-up is required when the SMI or MII management interface is used. This
ensures that the IDLE state of the MDIO signal is logic 1. An external pull-up is
recommended when the SMI or MII management interface is not used to avoid a floating
signal.
When used as an output, the pin input buffer is disabled. An external pull-down is
recommended when the SMI or MII management interface is not used to avoid a floating
signal.
This signal is pulled high through an internal pull-up resistor at all times.
AUTO_NEG_1
LED_FUN[1:0]
AUTO_MDIX_1
Table 3.5 Dedicated Configuration Strap Pins
DUPLEX_1
SPEED_1
BP_EN_1
SYMBOL
LED_EN
DATASHEET
BUFFER
Note 3.8
Note 3.8
Note 3.8
Note 3.8
Note 3.8
Note 3.8
Note 3.8
TYPE
(PU)
(PU)
(PU)
(PU)
(PU)
(PU)
(PU)
IS
IS
IS
IS
IS
IS
IS
33
LED Enable Strap: Configures the default value
for the LED_EN bits in the
Register
LED/GPIO pins are configured as GPIOs. When
latched high, all 8 LED/GPIO pins are configured
as LEDs. See
LED Function Straps: Configures the default
value for the LED_FUN bits in the
Configuration Register
low, the corresponding bit will be cleared. When
latched high, the corresponding bit will be set. See
Note
Port 1 Auto-MDIX Enable Strap: Configures the
default value for the Auto-MDIX functionality on
Port 1. When latched low, Auto-MDIX is disabled.
When latched high, Auto-MDIX is enabled. See
Note
Port 1 Auto Negotiation Enable Strap:
Configures the default value for the
Negotiation (PHY_AN)
PHY_BASIC_CTRL_1 register (See
Section
negotiation is disabled. When latched high, auto-
negotiation is enabled.
See
Port 1 Speed Select Strap: Configures the default
value for the
(PHY_SPEED_SEL_LSB)
PHY_BASIC_CTRL_1 register (See
Section
selected. When latched high, 100 Mbps is selected.
See
Port 1 Duplex Select Strap: Configures the
default value for the
bit in the PHY_BASIC_CTRL_1 register (See
Section
selected. When latched high, full-duplex is
selected. See
Port 1 Backpressure Enable Strap: Configures
the default value for the
Enable (BP_EN_1)
Control Register
low, backpressure is disabled. When latched high,
backpressure is enabled. See
Note
Note
3.9.
3.9.
13.2.2.1). When latched low, auto-
13.2.2.1). When latched low, 10 Mbps is
13.2.2.1). When latched low, half-duplex is
(LED_CFG). When latched low, all 8
3.9.
3.9.
Speed Select LSB
Note
Note
(MANUAL_FC_1). When latched
DESCRIPTION
3.9.
bit of the
3.9.
Duplex Mode (PHY_DUPLEX)
(LED_CFG). When latched
enable bit in the
Port 1 Backpressure
bit in the
LED Configuration
Port 1 Manual Flow
Note
Revision 1.2 (04-08-08)
LED
3.9.
Auto-