LAN9311 Datasheet, PDF (412/461 Pages) SMSC Corporation – Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
BITS
10:9
8
7:4
3:2
1
0
DESCRIPTION
Source Port B
When bit 8 is set, these bits indicate the source port on which the packet
was dropped.
00 = Port 0
01 = Port 1
10 = Port 2
11 = RESERVED
Set B Valid
When set, bits 14:9 are valid.
Drop Reason A
When bit 1 is set, these bits indicate the reason a packet was dropped. See
the Drop Reason B description above for definitions of each value of this
field.
Source port A
When bit 1 is set, these bits indicate the source port on which the packet
was dropped.
00 = Port 0
01 = Port 1
10 = Port 2
11 = RESERVED
Set A Valid
When set, bits 7:2 are valid.
Interrupt Pending
When set, a packet dropped event(s) is indicated.
TYPE
RC
RC
RC
RC
RC
RC
DEFAULT
00b
0b
0h
00b
0b
0b
Revision 2.0 (02-14-13)
412
DATASHEET
SMSC LAN9311/LAN9311i