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CS89712 Datasheet(PDF) 62 Page - Cirrus Logic

Part # CS89712
Description  HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH 10BASE-T ETHERNET CONTROLLER
PDF  170 Pages
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS89712 Datasheet(HTML) 62 Page - Cirrus Logic

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CS89712
62
DS502PP2
Address
Type of
Received
Frame
Erred
Frame?
Passes
Hash
Filter?
Contents of RxEvent
Bits F-A
Bit 9
Hashed
Bit 8
RxOK
Bit 6
IAHash
Individual
Address
no
yes
Hash Table Index
1
1
1
no
no
ExtraData
Runt
CRC
Error
Broadcast
Individual
Adr
01
0
yes
don’t care
ExtraData
Runt
CRC
Error
Broadcast
Individual
Adr
00
0
Multicast
Address
no
yes
Hash table index
1
1
0
no
no
ExtraData
Runt
CRC
Error
Broadcast
Individual
Adr
01
0
yes
don’t care
ExtraData
Runt
CRC
Error
Broadcast
Individual
Adr
00
0
Broad-
cast
Address
no
yes
(Note 1)
ExtraData
Runt
CRC
Error
Broadcast
Individual
Adr
11
0
(actual value X00010)
no
yes
(Note 2)
ExtraData
Runt
CRC
Error
Broadcast
Individual
Adr
01
0
no
no
ExtraData
Runt
CRC
Error
Broadcast
Individual
Adr
01
0
yes
don’t care
ExtraData
Runt
CRC
Error
Broadcast
Individual
Adr
00
0
Notes: 1. Broadcast frames are accepted as Multicast frames if and only if all the following conditions are met
simultaneously:
a) the Logical Address Filter is programmed as: (MSB) 0000 8000 0000 0000h (LSB). Note that this
LAF value corresponds to a Multicast Addresses of both all 1s and 03-00-00-00-00-01.
b) the Rx Control Register (register 5) is programmed to accept IndividualA, MulticastA, RxOK-only,
and the following address filters were enabled: IAHashA and BroadcastA.
2. NOT (Note 1).
Table 28. Contents of RxEvent Upon Various Conditions
IAHashA
Promiscuous
A
MulticastA
IndividualA
BroadcastA
Frames Accepted
0
0
0
1
0
Individual Address frames with
DA matching the IA at Ethernet
Port offset address 0158h
1
0
0
0
0
Individual Address frames with
DA that pass the hash filter
(DA[0] must be “0”)
0
0
1
0
0
Multicast frames with DA that
pass the hash filter (DA[0] must
be “1”)
0
0
0
0
1
Broadcast frames
X
1
X
X
X
All frames
Table 29. Destination Address Filtering Options



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