lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 334

• Manufacturer Part Number: lan9312
• Description: Lan9312 High Performance Two Port 10/100 Managed Ethernet Switch With 32-bit Non-pci Cpu Interface
• Manufacturer: Standard Microsystems Corp.

Revision 1.2 (04-08-08)
14.5.2.12
BITS
31:0
RX CRC
Count of packets that have between 64 and the maximum allowable number
of bytes and have a bad FCS, but do not have an extra nibble. 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 CRC Error Count Register (MAC_RX_CRCERR_CNT_x)
This register provides a counter of received packets that with CRC errors. The counter is cleared upon
being read.
This counter will stop at its maximum value of FFFF_FFFFh.
Minimum rollover time at 100Mbps is approximately 137 hours.
Register #:
Port0: 0419h
Port1: 0819h
Port2: 0C19h
DESCRIPTION
Port x MAC Receive Configuration Register
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
DATASHEET
334
Size:
32 bits
TYPE
RC
SMSC LAN9312
00000000h
DEFAULT
Datasheet