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

Datasheet

14.5.2.13Port x MAC Receive Multicast Count Register (MAC_RX_MULCST_CNT_x)

Register #:

Port0: 041Ah

Size:

32 bits

 

Port1: 081Ah

 

 

 

Port2: 0C1Ah

 

 

This register provides a counter of valid received packets with a multicast destination address. The counter is cleared upon being read.

BITS

DESCRIPTION

TYPE

DEFAULT

 

 

 

 

31:0

RX Multicast

RC

00000000h

 

Count of good packets (proper length and free of errors), including MAC

 

 

 

control frames, that have a multicast destination address (not including

 

 

 

broadcasts).

 

 

 

Note: This counter will stop at its maximum value of FFFF_FFFFh.

 

 

 

Minimum rollover time at 100Mbps is approximately 481 hours.

 

 

 

 

 

 

 

Note: A bad packet is one that has a FCS or Symbol error.

 

 

Revision 1.4 (08-19-08)

334

SMSC LAN9312

 

DATASHEET