LAN9312-NU SMSC, LAN9312-NU Datasheet - Page 223
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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High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
BITS
23
22
21
20
19
18
17
16
15
14
Master/Slave Port 1 (M_nS_1)
When set, Port 1 is a time clock master and captures timestamps when a
Sync packet is transmitted and when a Delay_Req is received. When
cleared, Port 1 is a time clock slave and captures timestamps when a
Delay_Req packet is transmitted and when a Sync packet is received.
Primary MAC Address Enable Port 1 (MAC_PRI_EN_1)
This bit enables/disables the primary MAC address on Port 1.
0: Disables primary MAC address on Port 1
1: Enables MAC address 01:00:5E:00:01:81 as a PTP address on Port 1
Alternate MAC Address 1 Enable Port 1 (MAC_ALT1_EN_1)
This bit enables/disables the alternate MAC address 1 on Port 1.
0: Disables alternate MAC address on Port 1
1: Enables MAC address 01:00:5E:00:01:82 as a PTP address on Port 1
Alternate MAC Address 2 Enable Port 1 (MAC_ALT2_EN_1)
This bit enables/disables the alternate MAC address 2 on Port 1.
0: Disables alternate MAC address on Port 1
1: Enables MAC address 01:00:5E:00:01:83 as a PTP address on Port 1
Alternate MAC Address 3 Enable Port 1 (MAC_ALT3_EN_1)
This bit enables/disables the alternate MAC address 3 on Port 1.
0: Disables alternate MAC address on Port 1
1: Enables MAC address 01:00:5E:00:01:84 as a PTP address on Port 1
User Defined MAC Address Enable Port 1 (MAC_USER_EN_1)
This bit enables/disables the auxiliary MAC address on Port 1. The auxiliary
address is defined via the 1588_AUX_MAC_HI and 1588_AUX_MAC_LO
registers.
0: Disables auxiliary MAC address on Port 1
1: Enables auxiliary MAC address as a PTP address on Port 1
Lock Enable RX Port 1 (LOCK_RX_1)
This bit enables/disables the RX lock. This lock prevents a 1588 capture
from overwriting the Clock, UUDI and Sequence ID values if the 1588 RX
interrupt for Port 1 is ready set due to a previous capture.
0: Disables RX Port 1 Lock
1: Enables RX Port 1 Lock
Lock Enable TX Port 1 (LOCK_TX_1)
This bit enables/disables the TX lock. This lock prevents a 1588 capture
from overwriting the Clock, UUDI and Sequence ID values if the 1588 TX
interrupt for Port 1 is ready set due to a previous capture.
0: Disables TX Port 1 Lock
1: Enables TX Port 1 Lock
Master/Slave Port 0(Host MAC)(M_nS_MII)
When set, Port 0 is a time clock master and captures timestamps when a
Sync packet is transmitted and when a Delay_Req is received. When
cleared, Port 0 is a time clock slave and captures timestamps when a
Delay_Req packet is transmitted and when a Sync packet is received.
Note:
Primary MAC Address Enable Port 0(Host MAC) (MAC_PRI_EN_MII)
This bit enables/disables the primary MAC address on Port 0.
0: Disables primary MAC address on Port 0
1: Enables MAC address 01:00:5E:00:01:81 as a PTP address on Port 0
For Port 0, receive is defined as data from the switch fabric, while
transmit is defined as data to the switch fabric.
DESCRIPTION
DATASHEET
223
TYPE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Revision 1.7 (06-29-10)
DEFAULT
0b
1b
0b
0b
0b
0b
1b
1b
0b
1b
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