SMSC LAN9312 - Manual (Page 341)

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312 341 Revision 1.4 (08-19-08)
DATASHEET
14.5.2.20 Port x MAC Receive Good Packet Length Count Register (MAC_RX_GOODPKTLEN_CNT_x)
This register provides a counter of total bytes received in good packets. The counter is cleared upon
being read.
Note: A bad packet is one that has an FCS or Symbol error.
Register #: Port0: 0421h Size: 32 bits
Port1: 0821h
Port2: 0C21h
BITS DESCRIPTION TYPE DEFAULT
31:0 RX Good Bytes
Count of total bytes received in good packets (proper length and free of
errors).
Note: This counter will stop at its maximum value of FFFF_FFFFh.
Minimum rollover time at 100Mbps is approximately 5.8 hours.
RC 00000000h