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Freescale Semiconductor MPC5200B ユーザーズマニュアル

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FEC Registers—MBAR + 0x3000
MPC5200B Users Guide, Rev. 1
Freescale Semiconductor
14-25
Note:  X: Bit is not reset and must be initialized.
14.5.18
FEC Descriptor Group Address 1 Register—MBAR + 0x3120
The GADDR1 register is written by the user. This register contains the upper 32bits of the 64-bit hash table used in the address recognition 
process for receive frames with a multicast address. This register must be initialized.
 
Note:  X: Bit is not reset and must be initialized.
14.5.19
FEC Descriptor Group Address 2 Register—MBAR + 0x3124
The GADDR2 register is written by the user. The GADDR2 register contains the lower 32bits of the 64-bit hash table used in the address 
recognition process for receive frames with a multicast address. This register must be initialized.
 
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31 lsb
R
IADDR2
W
RESET:
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Bits
Name
Description
0:31
IADDR2
The lower 32bits of the 64-bit hash table used in the address recognition process for receive 
frames with a unicast address. 
• Bit 31 contains hash index bit 31.
• Bit 0 contains hash index bit 0.
Table 14-27. FEC Descriptor Group Address 1 Register
msb  0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
GADDR1
W
RESET:
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31 lsb
R
GADDR1
W
RESET:
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Bits
Name
Description
0:31
GADDR1
The GADDR1 register contains the upper 32bits of the 64-bit hash table used in the address 
recognition process for receive frames with a multicast address. 
• Bit 31 contains hash index bit 63. 
• Bit 0 contains hash index bit 32.
Table 14-28. FEC Descriptor Group Address 2 Register
msb  0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
GADDR2
W
RESET:
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X