PXN20RM Datasheet, PDF (604/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

Fast Ethernet Controller (FEC)
The hash table registers must be initialized by the user. The CRC32 polynomial to use in computing the
hash is:
X32 + X26 + X23 + X22 + X16 + X12 + X11 + X10 + X8 + X7 + X5 + X4 + X2 + X + 1
A table of example Destination Addresses and corresponding hash values is included below for reference.
Table 25-34. Destination Address to 6-Bit Hash
48-bit DA
65:ff:ff:ff:ff:ff
55:ff:ff:ff:ff:ff
15:ff:ff:ff:ff:ff
35:ff:ff:ff:ff:ff
B5:ff:ff:ff:ff:ff
95:ff:ff:ff:ff:ff
D5:ff:ff:ff:ff:ff
F5:ff:ff:ff:ff:ff
DB:ff:ff:ff:ff:ff
FB:ff:ff:ff:ff:ff
BB:ff:ff:ff:ff:ff
8B:ff:ff:ff:ff:ff
0B:ff:ff:ff:ff:ff
3B:ff:ff:ff:ff:ff
7B:ff:ff:ff:ff:ff
5B:ff:ff:ff:ff:ff
27:ff:ff:ff:ff:ff
07:ff:ff:ff:ff:ff
57:ff:ff:ff:ff:ff
77:ff:ff:ff:ff:ff
F7:ff:ff:ff:ff:ff
C7:ff:ff:ff:ff:ff
97:ff:ff:ff:ff:ff
A7:ff:ff:ff:ff:ff
99:ff:ff:ff:ff:ff
B9:ff:ff:ff:ff:ff
F9:ff:ff:ff:ff:ff
6-bit Hash (in
hex)
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xA
0xB
0xC
0xD
0xE
0xF
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
Hash Decimal
Value
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
25-38
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor