LAN9312 Datasheet, PDF (329/458 Pages) SMSC Corporation – High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
14.5.2.7 Port x MAC Receive 256 to 511 Byte Count Register (MAC_RX_256_TO_511_CNT_x)
Register #:
Port0: 0414h
Port1: 0814h
Port2: 0C14h
Size:
32 bits
This register provides a counter of received packets between the size of 256 to 511 bytes. The counter
is cleared upon being read.
BITS
DESCRIPTION
31:0 RX 256 to 511 Bytes
Count of packets (including bad packets) that have between 256 and 511
bytes.
Note: This counter will stop at its maximum value of FFFF_FFFFh.
Minimum rollover time at 100Mbps is approximately 1581 hours.
TYPE
RC
DEFAULT
00000000h
Note: A bad packet is defined as a packet that has an FCS or Symbol error. For this counter, a packet
that is not an integral number of bytes is rounded down to the nearest byte.
SMSC LAN9312
329
DATASHEET
Revision 1.2 (04-08-08)