AM79C90 Advanced Micro Devices, AM79C90 Datasheet - Page 54

• Manufacturer Part Number: AM79C90
• Description: CMOS Local Area Network Controller for Ethernet (C-LANCE)
• Manufacturer: Advanced Micro Devices

Table A-1 “Mapping of Logical Address to Filter Mask”
can be used to find a multicast address that maps into a
particular address filter bit. For example, address BB 00
00 00 00 00 maps into bit 15. Therefore, any node that
has bit 15 set in its logical address filter register will re-
ceive all packets addressed to BB 00 00 00 00 00. The
table also shows that bit 15 is located in bit 7 of byte 1 of
the Logical Address Filter Register.
54
Byte
Pos
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
AMD
Pos
Bit
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
LAF
Bit
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
0
1
2
3
4
5
6
7
8
9
EB
CB
BB
A5
E5
C5
2B
0B
4B
6B
8B
C7
E7
A7
A9
C9
E9
85
45
65
25
05
87
07
27
67
47
69
49
09
29
89
Table A-1. Mapping of Logical Address to Filter Mask
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
Address Accepted
Destination
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
Am79C90
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
Byte
Pos
Addresses in this table are shown in the standard Ether-
net format. The leftmost byte is the first byte to appear
on the network with the least significant bit appearing
first.
4
4
4
4
4
4
4
4
5
5
5
5
5
5
5
5
6
6
6
6
6
6
6
6
7
7
7
7
7
7
7
7
Pos
Bit
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
LAF
Bit
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
CD
C1
BF
EF
CF
C3
ED
AD
8D
0D
2D
6D
4D
E1
A1
8F
4F
6F
2F
0F
A3
E3
21
01
41
71
81
63
43
03
23
83
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
Address Accepted
Destination
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00