ZL50404GDC ZARLINK [Zarlink Semiconductor Inc], ZL50404GDC Datasheet - Page 70

• Manufacturer Part Number: ZL50404GDC
• Description: Lightly Managed/Unmanaged 5-Port 10/100M Ethernet Switch
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

13.3.3.4
CPU Address:h20A+4n (n = trunk group)
Accessed by CPU (R/W)
13.3.3.5
CPU Address:h20B+4n (n = trunk group)
Accessed by CPU (R/W)
Multicast Hash Registers
Multicast Hash registers are used to distribute multicast traffic. 16 registers are used to form a 8-entry array; each
entry has 10 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.
TRUNKn_HASH54 – Trunk group 0~7 hash result 5/4 destination port number
TRUNKn_HASH76 – Trunk group 0~7 hash result 7/6 destination port number
Bit [3:0]
Bit [7:4]
Bit [3:0]
Bit [7:4]
Hash result 4 destination port number (Default 0)
Hash result 5 destination port number (Default 0)
Hash result 6 destination port number (Default 0)
Hash result 7 destination port number (Default 0)
Hash Value =0
Hash Value =1
Hash Value =2
Hash Value =3
Hash Value =4
Hash Value =5
Hash Value =6
Hash Value =7
Zarlink Semiconductor Inc.
HASH0-1
HASH1-1
HASH2-1
HASH3-1
HASH4-1
HASH5-1
HASH6-1
HASH7-1
ZL50404
70
P
o
r
t
9
P
o
r
t
8
HASH0-0
HASH1-0
HASH2-0
HASH3-0
HASH4-0
HASH5-0
HASH6-0
HASH7-0
P
o
r
t
3
P
o
r
t
0
Data Sheet