MEDIATEK Ralink MT7620 - Page 238

PGMT7620_V.1.0_040503
Page 238 of 523
MT7620 PROGRAMMING GUIDE
Integrated 802.11n MAC/BBP and 2.4 GHz RF/FEM Router-on-a-Chip
2.20.2 Block Diagram
DMA
MAC
DMA
MAC
DMA
MAC
DMA
MAC
DMA
MAC
5 ports FE PHY
P0 P1 P2 P3 P4
Link table
Link
Management
Data buffer
Data
Management
Address table
Address
Management
GDM
Bridge
P6 (G1)
CPU
DMA
MAC
P5
Figure 2-29 Ethernet Switch Block Diagram
2.20.3 Frame Classfication
2.20.3.1 Broadcast Frames
FTAG
DA
Type
Description
BC
FF-FF-FF-FF-FF-FF
-
Broadcast Frames
ARP
FF-FF-FF-FF-FF-FF
08-06
ARP Request Frames
-
08-06
ARP Reply Frames
RARP
FF-FF-FF-FF-FF-FF
80-35
RARP Request Frames
-
80-35
RARP Reply Frames