參數資料
| 型號： | KSZ8895MQ |
| 廠商： | Micrel Inc |
| 文件頁數： | 61/119頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ETHERNET SW 5PORT 128-PQFP |
| 標準包裝： | 66 |
| 控制器類型： | 以太網開關控制器 |
| 接口： | MII |
| 電源電壓： | 1.8V，2.5V，3.3V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 128-BFQFP |
| 供應商設備封裝： | 128-PQFP（14x20） |
| 包裝： | 托盤 |
| 配用： | 576-3871-ND - BOARD EVALUATION FOR KSZ8895MQ |
| 其它名稱： | 576-3753 |
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Micrel, Inc.
KSZ8895MQ/RQ/FMQ
IGMP Support
There are two parts involved to support the Internet Group Management Protocol (IGMP) in Layer 2. The first part is
IGMP snooping, the second part is this IGMP packet to be sent back to the subscribed port. Describe them as
follows.
IGMP Snooping
The KSZ8895MQ/RQ/FMQ traps IGMP packets and forwards them only to the processor (Port 5 SW5-MII/RMII).
The IGMP packets are identified as IP packets (either Ethernet IP packets, or IEEE 802.3 SNAP IP packets) with
IP version = 0x4 and protocol version number = 0x2. Set register 5 bit [6] to ‘1’ to enable IGMP snooping.
IGMP Send Back to the Subscribed Port
Once the host responds the received IGMP packet, the host should know the original IGMP ingress port and send
back the IGMP packet to this port only, otherwise this IGMP packet will be broadcasted to all port to downgrade
the performance.
Enable the tail tag mode, the host will know the IGMP packet received port from tail tag bits [1:0] and can send
back the response IGMP packet to this subscribed port by setting the bits [3:0] in the tail tag. Enable “Tail tag
mode” by setting Register 12 bit 1.
Port Mirroring Support
The KSZ8895MQ/RQ/FMQ supports “port mirror” comprehensively as:
“Receive Only” mirror on a port
All the packets received on the port will be mirrored on the sniffer port. For example, Port 1 is programmed to be
“rx sniff,” and Port 5 is programmed to be the “sniffer port.” A packet, received on Port 1, is destined to Port 4
after the internal look-up. The KSZ8895MQ/RQ/FMQ will forward the packet to both Port 4 and Port 5.
KSZ8895MQ/RQ/FMQ can optionally forward even “bad” received packets to Port 5.
“Transmit Only” mirror on a port
All the packets transmitted on the port will be mirrored on the sniffer port. For example, Port 1 is programmed to
be “tx sniff,” and Port 5 is programmed to be the “sniffer port.” A packet, received on any of the ports, is destined
to Port 1 after the internal look-up. The KSZ8895MQ/RQ/FMQ will forward the packet to both Ports 1 and 5.
“Receive and Transmit” mirror on two ports.
All the packets received on port A AND transmitted on port B will be mirrored on the sniffer port. To turn on the
“AND” feature, set Register 5 bit 0 to 1. For example, Port 1 is programmed to be “rx sniff,” Port 2 is programmed
to be “transmit sniff,” and Port 5 is programmed to be the “sniffer port.” A packet, received on Port 1, is destined
to Port 4 after the internal look-up. The KSZ8895MQ/RQ/FMQ will forward the packet to Port 4 only, since it does
not meet the “AND” condition. A packet, received on Port 1, is destined to Port 2 after the internal look-up. The
KSZ8895MQ/RQ/FMQ will forward the packet to both Port 2 and Port 5.
Multiple ports can be selected to be “rx sniffed” or “tx sniffed.” And any port can be selected to be the “sniffer port.”
All these per port features can be selected through Register 17.
VLAN Support
The KSZ8895MQ/RQ/FMQ supports 128 active VLANs and 4096 possible VIDs specified in IEEE 802.1q.
KSZ8895MQ/RQ/FMQ provides a 128-entry VLAN table, which correspond to 4096 possible VIDs and converts to
FID (7 bits) for address look-up max 128 active VLANs. If a non-tagged or null-VID-tagged packet is received, then
the ingress port VID is used for look-up when 802.1q is enabled by the global register 5 control 3 bit 7. In the VLAN
mode, the look-up process starts from VLAN table look-up to determine whether the VID is valid. If the VID is not
valid, the packet will then be dropped and its address will not be learned. If the VID is valid, FID is retrieved for
further look-up by the static MAC table or dynamic MAC table. FID+DA is used to determine the destination port. The
following table describes the different actions in different situations of DA and FID+DA in the static MAC table and
dynamic MAC table after the VLAN table finish a look-up action. FID+SA is used for learning purposes. The following
table also describes learning in the dynamic MAC table when the VLAN table has done a look-up in the static MAC
table without a valid entry.
March 12, 2014
46
Revision 1.7
相關PDF資料 |
PDF描述 |
|---|---|
| KSZ8993FL | IC CONV MED 10/100 SGL 128PQFP |
| KSZ8993MLI | IC SWITCH 10/100 3PORT 128-PQFP |
| KSZ8993ML | IC SWITCH 10/100 W/TXRX 128PQFP |
| KSZ8995FQ | IC SWITCH 10/100 5PORT 128-PQFP |
| KSZ8995MA | IC SWITCH 10/100 5PORT 128PQFP |
相關代理商/技術參數 |
參數描述 |
|---|---|
| KSZ8895MQ_12 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Integrated 5-Port 10/100 Managed Ethernet Switch with MII/RMII interface |
| KSZ8895MQ-EVAL | 功能描述:以太網開發(fā)工具 5-Port 10/100 Ethernet Switch with 1x MII Interface - Evaluation Board RoHS:否 制造商:Micrel 產品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評估:KSZ8873RLL 接口類型:RMII 工作電源電壓: |
| KSZ8895MQI | 功能描述:以太網 IC 5-Port 10/100 Ethernet Switch with 1x MII Interface (Industrial Grade) RoHS:否 制造商:Micrel 產品:Ethernet Switches 收發(fā)器數量:2 數據速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ8895MQXCA | 功能描述:Ethernet Switch 10/100 Base-T/TX I2C, SPI Interface 128-PQFP (14x20) 制造商:microchip technology 系列:- 包裝:托盤 零件狀態(tài):有效 協議:以太網 功能:開關 接口:I2C，SPI 標準:10/100 Base-T/TX 電壓 - 電源:1.8V，2.5V，3.3V 電流 - 電源:129mA 工作溫度:0°C ~ 70°C 封裝/外殼:128-BFQFP 供應商器件封裝:128-PQFP（14x20） 標準包裝:66 |
| KSZ8895MQXIA | 功能描述:Ethernet Switch 10/100 Base-T/TX I2C, SPI Interface 128-PQFP (14x20) 制造商:microchip technology 系列:- 包裝:托盤 零件狀態(tài):有效 協議:以太網 功能:開關 接口:I2C，SPI 標準:10/100 Base-T/TX 電壓 - 電源:1.8V，2.5V，3.3V 電流 - 電源:129mA 工作溫度:-40°C ~ 85°C 封裝/外殼:128-BFQFP 供應商器件封裝:128-PQFP（14x20） 標準包裝:66 |
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