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LAN9303MI-AKZE Datasheet, PDF (254/386 Pages) SMSC Corporation – Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII
Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII
Datasheet
13.4.2.12 Port x MAC Receive CRC Error Count Register (MAC_RX_CRCERR_CNT_x)
Register #:
Port0: 0419h
Port1: 0819h
Port2: 0C19h
Size:
32 bits
This register provides a counter of received packets that with CRC errors. The counter is cleared upon
being read.
BITS
DESCRIPTION
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 the Jumbo2K bit is set in the Port x MAC Receive Configuration Register
(MAC_RX_CFG_x), the max number of bytes is 2048.
Note: This counter will stop at its maximum value of FFFF_FFFFh.
Minimum rollover time at 100Mbps is approximately 137 hours.
TYPE
RC
DEFAULT
00000000h
Revision 1.5 (07-08-11)
254
DATASHEET
SMSC LAN9303M/LAN9303Mi