zl50415 Zarlink Semiconductor, zl50415 Datasheet - Page 76

• Manufacturer Part Number: zl50415
• Description: Managed 16-port 10/100 M + 2-port 1 G Ethernet Switch
• Manufacturer: Zarlink Semiconductor

14.6.16
CPU Address:h211
Accessed by CPU, serial interface (R/W)
Bit [4:0]
14.6.17
CPU Address:h211
Accessed by CPU, serial interface (R/W)
Bit [4:0]
14.6.18
Multicast Hash registers are used to distribute multicast traffic. 16 registers are used to form a 4-entry array; each
entry has 27 bits, with each bit representing one port. Any port not belonging to a trunk group should be
programmed with 1. Ports belonging to the same trunk group should only have a single port set to “1” per entry. The
port set to “1” is picked to transmit the multicast frame when the hash value is met.
14.6.18.1
CPU Address:h220
Accessed by CPU, serial interface (R/W)
Bit [7:0]
Hash Value =0
Hash Value =1
Hash Value =2
Hash Value =3
TRUNK2_HASH0 – Trunk group 2 hash result 0 destination port number
TRUNK2_HASH1 – Trunk group 2 hash result 1 destination port number
Multicast Hash Registers
Multicast_HASH0-0 – Multicast hash result 0 mask byte 0
Hash result 0 destination port number (Default 0x19)
0x19 = Gigabit port 1
0x1A = Gigabit port 2
Hash result 1 destination port number (Default 0x1A)
0x19 = Gigabit port 1
0x1A = Gigabit port 2
Default FF)
HASH0_3
HASH1_3
HASH2_3
HASH3_3
P
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2
6
P
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24
C
P
U
HASH0_2
HASH1_2
HASH2_2
HASH3_2
Zarlink Semiconductor Inc.
ZL50418
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HASH0_1
HASH1_1
HASH2_1
HASH3_1
P
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r
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15
P
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r
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8
HASH0_0
HASH1_0
HASH2_0
HASH3_0
P
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r
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7
Data Sheet
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0