参数资料
| 型号： | KS8993ML |
| 厂商： | Micrel Inc |
| 文件页数： | 30/85页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH 10/100 3PORT 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 |
| 配用： | 576-1016-ND - BOARD EVAL FOR KS8993ML |
| 其它名称： | 576-1015 |
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Micrel, Inc.
KS8993M/ML/MI
April 2005
36
M9999-041205
DA found in
Static MAC
Table?
Use FID flag?
FID match?
DA+FID
found in
Dynamic
MAC Table?
Action
No
Don’t care
No
Broadcast to the membership ports
defined in the
VLAN Table bits [18:16]
No
Don’t care
Yes
Send to the destination port defined in the
Dynamic MAC Address Table bits [53:52]
Yes
0
Don’t care
Send to the destination port(s) defined in
the
Static MAC Address Table bits [50:48]
Yes
1
No
Broadcast to the membership ports
defined in the
VLAN Table bits [18:16]
Yes
1
No
Yes
Send to the destination port defined in the
Dynamic MAC Address Table bits [53:52]
Yes
1
Yes
Don’t care
Send to the destination port(s) defined in
the
Static MAC Address Table bits [50:48]
Table 9. FID+DA Lookup in VLAN Mode
FID+SA found in Dynamic
MAC Table?
Action
No
Learn and add FID+SA to the Dynamic MAC Address Table
Yes
Update time stamp
Table 10. FID+SA Lookup in VLAN Mode
Advanced VLAN features, such as “Ingress VLAN filtering” and “Discard Non PVID packets” are also supported
by the KS8993M. These features can be set on a per port basis, and are defined in register 18, bit 6 and bit 5,
respectively for port 1.
QoS Priority Support
This feature provides Quality of Service (QoS) for applications, such as VoIP and video conferencing. The
KS8993M per port transmit queue could be split into two priority queues: a high priority queue and a low priority
queue. Bit 0 of registers 16, 32 and 48 is used to enable split transmit queues for ports 1, 2 and 3, respectively.
Optionally, the Px_TXQ2 strap-in pins can be used to enable this feature. With split transmit queues, high priority
packets will be placed in the high priority queue and low priority packets will be placed in the low priority queue.
For split transmit queues, the KS8993M provides four priority schemes:
1.
“Transmit all high priority packets before low priority packets;” i.e. a low priority packet could be transmitted
only when the high priority queue is empty
2.
“Transmit high priority packets and low priority packets at 10:1 ratio;” i.e. transmit a low priority packet after
every 10 high priority packets are transmitted, if both queues are busy
3.
“Transmit high priority packets and low priority packets at 5:1 ratio”
4.
“Transmit high priority packets and low priority packets at 2:1 ratio”
If a port's transmit queue is not split, both high priority packets and low priority packets have equal priority in the
transmit queue. Register 5 bits [3:2] are used to select the desired priority scheme. Optionally, the PRSEL1 and
PRSEL0 strap-in pins can be used.
相关PDF资料 |
PDF描述 |
|---|---|
| KS8995MAI | IC SWITCH 10/100 5PORT 128PQFP |
| KS8995MI | IC SWITCH 10/100 5PORT 128PQFP |
| KS8995XA | IC SWITCH 10/100 5PORT 128PQFP |
| KS8997 | IC SWITCH 10/100 8PORT 128PQFP |
| KS8999I | IC SWITCH 9-PORT 10/100 208-PQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| KS8993ML-EVAL | 功能描述:BOARD EVAL FOR KS8993ML RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板 |
| KS8995 | 制造商:KENDIN 功能描述:KS8995 制造商:Micrel Inc 功能描述:SPECIAL FUNCTION IC, Silicon Manufacturer:Micrel Semiconductor, Silicon Core Num |
| KS8995E | 制造商:Micrel Inc 功能描述: |
| KS8995E-EVAL | 功能描述:BOARD EVAL EXPERIMENT KS8995E RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板 |
| KS8995FQ | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Integrated 5-Port 10/100 Managed Switch |
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