LAN9312-NU SMSC, LAN9312-NU Datasheet - Page 288
LAN9312-NU
Manufacturer Part Number
LAN9312-NU
Description
Ethernet ICs Hi Per 2 Port 10/100 Ethernet Switch
Manufacturer
SMSC
Type
Two Port Managed Ethernet Switchr
Datasheet
1.LAN9312-NZW.pdf
(458 pages)
Specifications of LAN9312-NU
Ethernet Connection Type
10 Base-T, 100 Base-TX
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Product
Ethernet Switches
Number Of Transceivers
1
Standard Supported
802.3, 802.3u
Data Rate
10 Mbps, 100 Mbps
Supply Voltage (max)
3.3 V
Supply Voltage (min)
0 V
Supply Current (max)
185 mA, 295 mA
Maximum Operating Temperature
+ 70 C
Package / Case
TQFP-100
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LAN9312-NU
Manufacturer:
Microchip Technology
Quantity:
10 000
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Revision 1.7 (06-29-10)
BITS
6:0
9
8
7
Restart Auto-Negotiation (PHY_RST_AN)
When set, this bit restarts the Auto-Negotiation process.
0: Normal operation
1: Auto-Negotiation restarted
Duplex Mode (PHY_DUPLEX)
This bit is used to set the duplex when the
is disabled.
0: Half Duplex
1: Full Duplex
Collision Test Mode (PHY_COL_TEST)
This bit enables/disables the collision test mode of the Port x PHY. When
set, the collision signal is active during transmission. It is recommended that
this feature be used only in loopback mode.
0: Collision test mode disabled
1: Collision test mode enabled
RESERVED
Note 14.49 The default value of this bit is determined by the logical OR of the Auto-Negotiation strap
Note 14.50 The default value of this bit is determined by the value of the Auto-Negotiation strap
Note 14.51 The default value of this bit is determined by the logical AND of the negation of the Auto-
(autoneg_strap_1 for Port 1 PHY, autoneg_strap_2 for Port 2 PHY) and the speed select
strap (speed_strap_1 for Port 1 PHY, speed_strap_2 for Port 2 PHY). Essentially, if the
Auto-Negotiation strap is set, the default value is 1, otherwise the default is determined by
the value of the speed select strap. Refer to
page 40
(autoneg_strap_1 for Port 1 PHY, autoneg_strap_2 for Port 2 PHY). Refer to
"Configuration Straps," on page 40
Negotiation strap (autoneg_strap_1 for Port 1 PHY, autoneg_strap_2 for Port 2 PHY) and
the duplex select strap (duplex_strap_1 for Port 1 PHY, duplex_strap_2 for Port 2 PHY).
Essentially, if the Auto-Negotiation strap is set, the default value is 0, otherwise the default
is determined by the value of the duplex select strap. Refer to
Straps," on page 40
for more information.
DESCRIPTION
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
for more information.
DATASHEET
Auto-Negotiation (PHY_AN)
288
for more information.
Section 4.2.4, "Configuration Straps," on
bit
Section 4.2.4, "Configuration
TYPE
R/W
R/W
R/W
RO
SC
SMSC LAN9312
Section 4.2.4,
Note 14.51
DEFAULT
Datasheet
0b
0b
-
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