参数资料
| 型号： | KS8995M |
| 厂商： | Micrel Inc |
| 文件页数： | 51/73页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH 10/100 5PORT 128PQFP |
| 标准包装： | 66 |
| 系列： | * |
| 类型： | * |
| 应用： | * |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 128-BFQFP |
| 供应商设备封装： | 128-PQFP（14x20） |
| 包装： | 散装 |
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December 2003
55
M9999-120403
KS8995M
Micrel
Address
Name
Description
Mode
Default
Format of Static VLAN Table (16 entries)
21
Valid
1, the entry is valid
R/W
1
0, entry is invalid
20-16
Membership
Specify which ports are members of the VLAN.
R/W
11111
If a DA look-up fails (no match in both static and
dynamic tables), the packet associated with this VLAN
will be forwarded to ports specified in this field.
Eg. 11001 means port 5,4, and 1 are in this VLAN.
15-12
FID
Filter ID. KS8995M supports 16 active VLANs
R/W
0
represented by these four bit fields. FID is the mapped
ID. If 802.1q VLAN is enabled, the look-up will be based
on FID+DA and FID+SA.
11-0
VID
EEE 802.1q 12 bit VLAN ID
R/W
1
Table 13. VLAN Table
VLAN Address
VLAN table is used to do VLAN table look-up. If 802.1q VLAN mode is enabled (Register 5 bit 7 =1), this table will be used
to retrieve VLAN information that the ingress packet is associated with. The information includes FID (fiter ID), VID(VLAN ID),
VLAN membership described below:
If 802.1q VLAN mode is enabled, KS8995M will assign a VID to every ingress packet. If the packet is untagged or tagged with
a null VID, the packet is assigned with the default port VID of the ingress port. If the packet is tagged with non null VID, the
VID in the tag will be used. The look-up process will start from the VLAN table look-up. If the VID is not valid, the packet will
be dropped and no address learning will take place. If the VID is valid, the FID is retrieved. The FID+DA and FID+SA lookups
are performed. The FID+DA look-up determines the forwarding ports. If FID+DA fails, the packet will be broadcasted to all the
members (excluding the ingress port) of the VLAN. If FID+SA fails, the FID+SA will be learned.
Examples:
(1) VLAN Table Read (read the 3rd entry)
Write to reg110 with 0x14 (read VLAN table selected)
Write to reg111 with 0x2 (trigger the read operation)
Then
Read reg118 (VLAN table bits 21-16)
Read reg119 (VLAN table bits 15-8)
Read reg120 (VLAN table bits 7-0)
(2) VLAN Table Write (write the 7th entry)
Write to reg118 (VLAN table bits 21-16)
Write to reg119 (VLAN table bits 15-8)
Write to reg120 (VLAN table bits 7-0)
Write to reg110 with 0x04 (write static table selected)
Write to reg111 with 0x6 (trigger the write operation)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| KS8995M_0607 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Integrated 5-Port 10/100 Managed Switch |
| KS8995MA | 功能描述:IC SWITCH 10/100 5PORT 128PQFP RoHS:是 类别:集成电路 (IC) >> 专用 IC 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA（27x27） 包装:散装 |
| KS8995MA_11 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Integrated 5-Port 10/100 Managed Switch |
| KS8995MA-EVAL | 功能描述:BOARD EVAL EXPERIMENT KS8995MA RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 类型:MCU 适用于相关产品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、缆线、软件、数据表和用户手册 其它名称:520-1035 |
| KS8995MAI | 功能描述:IC SWITCH 10/100 5PORT 128PQFP RoHS:否 类别:集成电路 (IC) >> 专用 IC 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA（27x27） 包装:散装 |
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