adm6999g Infineon Technologies Corporation, adm6999g Datasheet - Page 46

• Manufacturer Part Number: adm6999g
• Description: 8 Port 10/100 Mb/s + Gigabit Single Chip Ethernet Switch Controller
• Manufacturer: Infineon Technologies Corporation

Table 15
ADM6996
Port2
–
Port3
Port4
Port5 MII
Below is Router old architecture. The disadvantages of this are:
1. WAN port only supports 10M Half-Duplex and non-MDIX function.
2. Needs extra 10M NIC costs.
3. ISA bus will become bottleneck of whole system.
Figure 5
Below is new architecture by using ADM6996 serial chip VLAN function. The advantages of below are:
1. WAN Port can upgrade to 100/10 Full/Half, Auto MDIX.
2. WAN/LAN Port is programmable and put on same Switch.
3. No extra NIC and save the cost.
4. High bandwidth of MII port up to 200M speed.
Data Sheet
ADM6996 Port Mapping with ADM6999G/GX (cont’d)
Router old architecture
Port0
Port4 MAC MII Port
4 100/10 LAN Port
Port1
CPU with
one MII
MII
Port2
46
ADM6999G/GX
Port4
Port5
Port6
Port7
Port8 MII
Port3
ISA
10M Half Non
MDIX WAN Port
10M Half
NIC
Rev 1.31, 2005-11-25
ADM6999G/GX
Descriptions