adm6999ux Infineon Technologies Corporation, adm6999ux Datasheet - Page 45

• Manufacturer Part Number: adm6999ux
• Description: Adm6999u 9 Port 10/100 Mb/s Single Chip Ethernet Switch Controller
• Manufacturer: Infineon Technologies Corporation

Figure 7
New Router application works well on normal application. If user’s ISP vendor (cable modem) lock Registration
Card’s ID then Router CPU must send this Lock Registration Card’s ID to WAN Port. One condition happen is
there exist two same MAC ID on this Switch. One is original Card and another one is CPU. This will make Switch
learning table trouble.
ADM6999U/UX provides MAC Clone function that allows two same MAC addresses with different VLAN ID0 on
learning table. This will solve Lock registration Card’s ID issue. ADM6999U/UX serial chip will put these two same
MAC addresses with different VLAN ID0 at different learning table entry.
How to Set ADM6999U/UX on Router:
•
•
•
Step1: Set Register 11
{Coding: Write Register 11
Step2: Set Port0~3 as Untag Port and set PVID = 1.
{Coding: Write Register 01
Step3: Set Port4 as Untag Port and set PVID = 2.
{Coding: Write Register 08
Step4: Set Port5 MII Port as Tag Port and set PVID = 2.
{Coding: Write Register 09
Step5: Group Port0, 1, 2, 3, 5 as VLAN 1.
{Coding: Write Register 14
Step6: Group Port4, 5 as VLAN 2.
{Coding: Write Register 15
How MAC Clone Operation:
1. LAN to LAN/CPU Traffic. ADM6999U/UX LAN traffic to LAN/CPU only. Traffic to another LAN port will be untag
Data Sheet
Port0~3: LAN Port
Port4: WAN Port
Port5: MII Port as CPU Port
packet. Traffic to CPU is Tag packet with VID = 1. CPU can check VID to distinguish LAN traffic or WAN traffic.
New architecture by using ADM6999U/UX serial chip VLAN function
H
bit4 and bit5 to 1.
H
H
H
H
H
H
, 03
as 0xff30h}
as 880F
as 881F
as 0155
as 0180
H
, 05
H
H
H
H
H
Port0
, 07
. VLAN1 cover Port0, 1, 2, 3, 5.}
. VLAN2 cover Port4, 5.}
. Port4 as Untag, PVID = 2, Enable MDIX.}
. Port5 MII port as Tag, PVID = 2.}
4 100/10 LAN Port
VLAN & MAC Clone Function
H
as 840F
Port5 MAC MII Port
Port1
H
. Port0~3 as Untag, PVID = 1, Enable MDIX}
45
CPU with
one MII
Port2
MII
Port3
Port4
100/10
WAN
Port
Rev. 1.42, 2005-11-25
ADM6999U/UX
Data Sheet
Descriptions