Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

Datasheet

14.5.4.6Buffer Manager Port 0 Drop Count Register (BM_DRP_CNT_SRC_MII)

Register #:

1C05h

Size:

32 bits

This register counts the number of packets dropped by the Buffer Manager that were received on Port 0(Host MAC). This count includes packets dropped due to buffer space limits and ingress rate limit discarding (Red and random Yellow dropping).

BITS

DESCRIPTION

TYPE

DEFAULT

 

 

 

 

31:0

Dropped Count

RC

00000000h

 

These bits count the number of dropped packets received on Port 0 and is

 

 

 

cleared when read.

 

 

 

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

 

 

 

Minimum rollover time at 100Mbps is approximately 481 hours.

 

 

 

 

 

 

Revision 1.4 (08-19-08)

418

SMSC LAN9311/LAN9311i

 

DATASHEET