High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

Datasheet

14.5.2.6Port x MAC Receive 128 to 255 Byte Count Register (MAC_RX_128_TO_255_CNT_x)

Register #:

Port0: 0413h

Size:

32 bits

 

Port1:

0813h

 

 

 

Port2:

0C13h

 

 

This register provides a counter of received packets between the size of 128 to 255 bytes. The counter is cleared upon being read.

BITS

 

DESCRIPTION

TYPE

DEFAULT

 

 

 

 

31:0

RX 128 to 255 Bytes

RC

00000000h

 

Count of packets (including bad packets) that have between 128 and 255

 

 

 

bytes.

 

 

 

 

Note:

This counter will stop at its maximum value of FFFF_FFFFh.

 

 

 

 

Minimum rollover time at 100Mbps is approximately 848 hours.

 

 

 

 

 

 

 

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

327

Revision 1.4 (08-19-08)

 

DATASHEET