LAN9312-NU Standard Microsystems (SMSC), LAN9312-NU Datasheet - Page 222

• Manufacturer Part Number: LAN9312-NU
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN9312-NU

• Number Of Primary Switch Ports: 2
• Operating Supply Voltage (typ): 3.3V
• Fiber Support: No
• Phy/transceiver Interface: MII
• Power Supply Type: Analog
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Operating Temperature Classification: Commercial
• Data Rate: 100Mbps
• Lead Free Status / RoHS Status: Compliant

Revision 1.7 (06-29-10)
14.2.5.22
BITS
31
30
29
28
27
26
25
24
Master/Slave Port 2 (M_nS_2)
When set, Port 2 is a time clock master and captures timestamps when a
Sync packet is transmitted and when a Delay_Req is received. When
cleared, Port 2 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 2 (MAC_PRI_EN_2)
This bit enables/disables the primary MAC address on Port 2.
0: Disables primary MAC address on Port 2
1: Enables MAC address 01:00:5E:00:01:81 as a PTP address on Port 2
Alternate MAC Address 1 Enable Port 2 (MAC_ALT1_EN_2)
This bit enables/disables the alternate MAC address 1 on Port 2.
0: Disables alternate MAC address on Port 2
1: Enables MAC address 01:00:5E:00:01:82 as a PTP address on Port 2
Alternate MAC Address 2 Enable Port 2 (MAC_ALT2_EN_2)
This bit enables/disables the alternate MAC address 2 on Port 2.
0: Disables alternate MAC address on Port 2
1: Enables MAC address 01:00:5E:00:01:83 as a PTP address on Port 2
Alternate MAC Address 3 Enable Port 2 (MAC_ALT3_EN_2)
This bit enables/disables the alternate MAC address 3 on Port 2.
0: Disables alternate MAC address on Port 2
1: Enables MAC address 01:00:5E:00:01:84 as a PTP address on Port 2
User Defined MAC Address Enable Port 2 (MAC_USER_EN_2)
This bit enables/disables the auxiliary MAC address on Port 2. The auxiliary
address is defined via the 1588_AUX_MAC_HI and 1588_AUX_MAC_LO
registers.
0: Disables auxiliary MAC address on Port 2
1: Enables auxiliary MAC address as a PTP address on Port 2
Lock Enable RX Port 2 (LOCK_RX_2)
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 2 is already set due to a previous capture.
0: Disables RX Port 2 Lock
1: Enables RX Port 2 Lock
Lock Enable TX Port 2 (LOCK_TX_2)
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 2 is already set due to a previous capture.
0: Disables TX Port 2 Lock
1: Enables TX Port 2 Lock
1588 Configuration Register (1588_CONFIG)
This read/write register is responsible for the configuration of the 1588 timestamps for all ports.
Offset:
194h
DESCRIPTION
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
DATASHEET
222
Size:
32 bits
TYPE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
SMSC LAN9312
DEFAULT
Datasheet
0b
1b
0b
0b
0b
0b
1b
1b