LAN9311i SMSC [SMSC Corporation], LAN9311i Datasheet - Page 41
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LAN9311i
Manufacturer Part Number
LAN9311i
Description
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LAN9311I.pdf
(459 pages)
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Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
STRAP NAME
LED_en_strap[7:0]
LED_fun_strap[1:0]
auto_mdix_strap_1
manual_mdix_strap_1
autoneg_strap_1
Table 4.2 Soft-Strap Configuration Strap Definitions
DESCRIPTION
LED Enable Straps: Configures the default value for the
LED_EN bits in the
(LED_CFG). A high value configures the associated
LED/GPIO pin as a LED. A low value configures the
associated LED/GPIO pin as a GPIO.
Note:
LED Function Straps: Configures the default value for the
LED_FUN bits in the
(LED_CFG). When configured low, the corresponding bit
will be cleared. When configured high, the corresponding
bit will be set.
Port 1 Auto-MDIX Enable Strap: Configures the default
value for the Auto-MDIX functionality on Port 1 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 1 Manual MDIX Strap: Configures MDI(0) or MDIX(1)
for Port 1 when the auto_mdix_strap_1 is low and the
AMDIXCTL bit of the
Indication Register
(PHY_SPECIAL_CONTROL_STAT_IND_x)
Port 1 Auto Negotiation Enable Strap: Configures the
default value for the
in the PHY_BASIC_CTRL_1 register (See
Section
disabled. When configured high, auto-negotiation is
enabled.
This strap also affects the default value of the following bits:
Refer to the respective register definition sections for
additional information.
PHY_SPEED_SEL_LSB and PHY_DUPLEX bits of the
Port x PHY Basic Control Register
(PHY_BASIC_CONTROL_x)
10BASE-T Full Duplex (bit 6) and 10BASE-T Half Duplex
(bit 5) bits of the
Advertisement Register (PHY_AN_ADV_x)
MODE[2:0] bits of the
(PHY_SPECIAL_MODES_x)
14.4.2.1). When configured low, auto-negotiation is
One pin configures the default for all 8
LED/GPIOs, but 8 separate bits are loaded by the
EEPROM Loader, allowing individual control over
each LED/GPIO.
If AMDIXCTL is set, this strap had no effect.
DATASHEET
Port x PHY Auto-Negotiation
LED Configuration Register
Auto-Negotiation (PHY_AN)
LED Configuration Register
Port x PHY Special Control/Status
Port x PHY Special Control/Status
Port x PHY Special Modes Register
41
is cleared.
is cleared.
enable bit
PIN / DEFAULT
VALUE
LED_EN
00b
AUTO_MDIX_1
0b
1b
Revision 1.6 (08-18-09)
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