NXP Semiconductors PXN2020 - Page 604

Fast Ethernet Controller (FEC)
PXN20 Microcontroller Reference Manual, Rev. 1
25-38 Freescale Semiconductor
The hash table registers must be initialized by the user. The CRC32 polynomial to use in computing the
hash is:
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
6-bit Hash (in
hex)
Hash Decimal
Value
65:ff:ff:ff:ff:ff 0x0 0
55:ff:ff:ff:ff:ff 0x1 1
15:ff:ff:ff:ff:ff 0x2 2
35:ff:ff:ff:ff:ff 0x3 3
B5:ff:ff:ff:ff:ff 0x4 4
95:ff:ff:ff:ff:ff 0x5 5
D5:ff:ff:ff:ff:ff 0x6 6
F5:ff:ff:ff:ff:ff 0x7 7
DB:ff:ff:ff:ff:ff 0x8 8
FB:ff:ff:ff:ff:ff 0x9 9
BB:ff:ff:ff:ff:ff 0xA 10
8B:ff:ff:ff:ff:ff 0xB 11
0B:ff:ff:ff:ff:ff 0xC 12
3B:ff:ff:ff:ff:ff 0xD 13
7B:ff:ff:ff:ff:ff 0xE 14
5B:ff:ff:ff:ff:ff 0xF 15
27:ff:ff:ff:ff:ff 0x10 16
07:ff:ff:ff:ff:ff 0x11 17
57:ff:ff:ff:ff:ff 0x12 18
77:ff:ff:ff:ff:ff 0x13 19
F7:ff:ff:ff:ff:ff 0x14 20
C7:ff:ff:ff:ff:ff 0x15 21
97:ff:ff:ff:ff:ff 0x16 22
A7:ff:ff:ff:ff:ff 0x17 23
99:ff:ff:ff:ff:ff 0x18 24
B9:ff:ff:ff:ff:ff 0x19 25
F9:ff:ff:ff:ff:ff 0x1A 26
X
32
X
26
X
23
X
22
X
16
X
12
X
11
X
10
X
8
X
7
X
5
X
4
X
2
X1++++++++++++++