LAN9311-NZW Standard Microsystems (SMSC), LAN9311-NZW Datasheet - Page 341

• Manufacturer Part Number: LAN9311-NZW
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN9311-NZW

• Number Of Primary Switch Ports: 2
• Internal Memory Buffer Size: 32
• Operating Supply Voltage (typ): 3.3V
• Fiber Support: No
• Integrated Led Drivers: Yes
• 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

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
14.5.2.18
BITS
31:0
RX Alignment
Count of packets that have between 64 bytes and the maximum allowable
number of bytes and are not byte aligned and have a bad FCS. The max
number of bytes is 1518 for untagged packets and 1522 for tagged packets.
If Jumbo2K (bit 3) is set in the
(MAC_RX_CFG_x), the max number of bytes is 2048.
Note:
Port x MAC Receive Alignment Error Count Register (MAC_RX_ALIGN_CNT_x)
This register provides a counter of received packets with 64 bytes to the maximum allowable, and a
FCS error. The counter is cleared upon being read.
Note: For this counter, a packet with the maximum number of bytes that is not an integral number of
This counter will stop at its maximum value of FFFF_FFFFh.
Minimum rollover time at 100Mbps is approximately 481 hours.
bytes (e.g. a 1518 1/2 byte packet) and a FCS error is considered an alignment error and is
counted.
Register #:
Port0: 041Fh
Port1: 081Fh
Port2: 0C1Fh
DESCRIPTION
Port x MAC Receive Configuration Register
DATASHEET
341
Size:
32 bits
TYPE
RC
Revision 1.7 (06-29-10)
00000000h
DEFAULT