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參數(shù)資料
| 型號： | RTL8309SB |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | SINGLE-CHIP 9-PORT 10/100MBPS SWITCH CONTROLLER |
| 中文描述： | 單芯片9口10/100Mbps開關(guān)控制器 |
| 文件頁數(shù)： | 89/115頁 |
| 文件大?。?/td> | 866K |
| 代理商： | RTL8309SB |
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RTL8309SB
Datasheet
Single-chip 9-port 10/100Mbps Switch Controller
74
Track ID: JATR-1076-21 Rev. 1.4
8.3.
Advanced Functionality Overview
8.3.1.
Port-Based VLAN
If the VLAN function is enabled by pulling down the Dis_VLAN strapping pin, the default VLAN membership configuration
by internal register is the MII port overlapped with all the other ports to form nine individual VLANs. Via an attached serial
EEPROM or via SMI, the default configuration may be modified to allow the input ports to join any of the nine VLAN groups:
VLAN A, B, C, D, E, F, G, H, and I. Each input port can be a member of more than one VLAN group.
Port-based VLAN mapping is the simplest implicit mapping rule. Each incoming frame is assigned to a VLAN based on the
input port into which it arrived at the switch. It is not necessary to parse and inspect frames in real-time to determine their
VLAN mapping. All frames received on a given input port will be forwarded to members of that port’s VLAN group. The
RTL8309SB supports nine VLAN indexes to individually index received packets to one of the nine VLAN membership
registers. These nine groups of VLAN membership registers, VLAN ID [A] membership bit [8:0] ~ VLAN ID [I] membership
bit [8:0], determine which ports are members of this VLAN. The RTL8309SB forwards frames to members of this VLAN only
(excluding the input port of this frame). VLAN membership registers descript which port are members in a VLAN member set.
A port that is not specified in this port’s member set should generally not be receiving and/or transmitting frames for that
VLAN.
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