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参数资料
| 型号： | KSZ8873MLL AM TR |
| 厂商： | Micrel Inc |
| 文件页数： | 46/115页 |
| 文件大小： | 0K |
| 描述： | IC ETHERNET SWITCH 3PORT 64LQFP |
| 产品培训模块： | KSZ8873 Ethernet Switches |
| 标准包装： | 1,000 |
| 控制器类型： | 以太网开关控制器 |
| 接口： | MII |
| 电源电压： | 1.8V，2.5V，3.3V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-LQFP |
| 供应商设备封装： | 64-PQFP（10x10） |
| 包装： | 带卷 (TR) |
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Micrel, Inc.
KSZ8873MLL/FLL/RLL
September 20, 2013
36
Revision 1.6
Advanced Switch Functions
Bypass Mode
The KSZ8873MLL/FLL/RLL also offer a by-pass mode which enables system-level power saving. When the CPU
(connected to Port 3) enters a power saving mode of power down or sleeping mode, the CPU can control the Pin 27
SMTXER3/MII_LINK_3 which can be tied high so that the KSZ8873MLL/FLL/RLL detect this change and automatically
switches to the by-pass mode in which the switch function between Port1 and Port2 is sustained. In the by-pass mode,
the packets with DA to port 3 will be dropped and by pass the internal buffer memory, make the buffer memory more
efficiency for the data transfer between port 1 and port 2. Specially, the power saving get more in energy detect mode with
the by-pass to be used.
IEEE 802.1Q VLAN Support
The KSZ8873MLL/FLL/RLL supports 16 active VLANs out of the 4096 possible VLANs specified in the IEEE 802.1Q
specification. KSZ8873MLL/FLL/RLL provides a 16-entries VLAN Table, which converts the 12-bits VLAN ID (VID) to the
4-bits Filter ID (FID) for address lookup. If a non-tagged or null-VID-tagged packet is received, the ingress port default VID
is used for lookup. In VLAN mode, the lookup process starts with VLAN Table lookup to determine whether the VID is
valid. If the VID is not valid, the packet is dropped and its address is not learned. If the VID is valid, the FID is retrieved for
further lookup. The FID + Destination Address (FID+DA) are used to determine the destination port. The FID + Source
Address (FID+SA) are used for address learning.
Table 10. FID + DA Lookup in VLAN Mode
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 11. FID + SA 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
Advanced VLAN features, such as “Ingress VLAN filtering” and “Discard Non PVID packets” are also supported by the
KSZ8873MLL/FLL/RLL. These features can be set on a per port basis, and are defined in register 18, 34 and 50 for ports
1, 2 and 3, respectively.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| KSZ8873MLL-EVAL | 功能描述:以太网开发工具 3-Port Fast Ethernet Switch with 1x MII Interface - Evaluation Board RoHS:否 制造商:Micrel 产品:Evaluation Boards 类型:Ethernet Transceivers 工具用于评估:KSZ8873RLL 接口类型:RMII 工作电源电压: |
| KSZ8873MLLI | 功能描述:以太网 IC 3-Port Fast Ethernet Switch with 1x RMII Interface (Industrial Grade, Lead Free) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray |
| KSZ8873MLLJ | 功能描述:以太网 IC 3-Port Fast Ethernet Switch with 1x RMII Interface (Extended Temp) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray |
| KSZ8873MML | 功能描述:以太网 IC 3-Port Fast Ethernet Switch with 2x MII Interface, Lead Free RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray |
| KSZ8873MML-EVAL | 功能描述:以太网开发工具 3-Port Fast Ethernet Switch with 2x MII Interface - Evaluation Board RoHS:否 制造商:Micrel 产品:Evaluation Boards 类型:Ethernet Transceivers 工具用于评估:KSZ8873RLL 接口类型:RMII 工作电源电压: |
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