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參數(shù)資料
| 型號： | KSZ8842-PMBL AM |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 45/119頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ETHERNET SW 2PORT 100-LFBGA |
| 標(biāo)準(zhǔn)包裝： | 260 |
| 控制器類型： | 以太網(wǎng)開關(guān)控制器 |
| 接口： | PCI |
| 電源電壓： | 3.1 V ~ 3.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-LFBGA |
| 供應(yīng)商設(shè)備封裝： | 100-LFBGA |
| 包裝： | 托盤 |
| 產(chǎn)品目錄頁面： | 1081 (CN2011-ZH PDF) |
| 配用： | 576-1636-ND - BOARD EVALUATION KSZ8842-PMQL |
| 其它名稱： | 576-3348 |
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Micrel, Inc.
KSZ8842-PMQL/PMBL
October 2007
31
M9999-100207-1.5
after the internal lookup. The KSZ8842-PMQL/PMBL forwards the packet to both port 1 and the host port.
“receive and transmit” mirror on two ports
All the packets received on port A and transmitted on port B are mirrored on the sniffer port. To turn on the “AND”
feature, set register SGCR2, bit 8 to “1”. For example, port 1 is programmed to be “receive sniff”, port 2 is programmed
to be “transmit sniff”, and the host port is programmed to be the “sniffer port”. A packet received on port 1 is destined to
port 2 after the internal lookup. The KSZ8842-PMQL/PMBL forwards the packet to both port 2 and the host port.
Multiple ports can be selected as “receive sniff” or “transmit sniff”. In addition, any port can be selected as the “sniffer
port”. All these per port features can be selected through registers P1CR2, P2CR2, and P3CR2 for ports 1, 2, and the
host port, respectively.
IEEE 802.1Q VLAN Support
The KSZ8842-PMQL/PMBL supports 16 active VLANs out of the 4096 possible VLANs specified in the IEEE 802.1Q
specification. KSZ8842-PMQL/PMBL provides a 16-entry 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. (See Tables 12 and 13.)
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 5. 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 6. FID+SA Lookup in VLAN Mode
QoS Priority Support
The KSZ8842-PMQL/PMBL provides Quality of Service (QoS) for applications such as VoIP and video conferencing.
Offering four priority queues per port, the per-port transmit queue can be split into four priority queues: Queue 3 is the
highest priority queue and Queue 0 is the lowest priority queue. Bit 0 of registers P1CR1, P2CR1, and P3CR1 is used
to enable split transmit queues for ports 1, 2, and the host port, respectively.
Port-Based Priority
With port-based priority, each ingress port can be individually classified as a high-priority receiving port. All packets
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| KSZ8842-PMBL-EVAL | 功能描述:以太網(wǎng)開發(fā)工具 2+1 Port 10/100 Ethernet Switch with 32b/33MHz PCI Interface (BGA Version) Eval Board RoHS:否 制造商:Micrel 產(chǎn)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: |
| KSZ8842-PMBL-TR | 功能描述:Ethernet Switch 10/100 Base-T/TX PHY PCI Interface 100-LFBGA (9x9) 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 協(xié)議:以太網(wǎng) 功能:開關(guān) 接口:PCI 標(biāo)準(zhǔn):10/100 Base-T/TX PHY 電壓 - 電源:3.1 V ~ 3.5 V 電流 - 電源:122mA 工作溫度:-40°C ~ 85°C 封裝/外殼:100-LFBGA 供應(yīng)商器件封裝:100-LFBGA（9x9） 標(biāo)準(zhǔn)包裝:1 |
| KSZ8842-PMQL | 功能描述:以太網(wǎng) IC 2-Port Ethernet Switch/Repeater + 32-bit/33MHz PCI bus interface(Lead Free) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)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 |
| KSZ8842-PMQL-EVAL | 功能描述:以太網(wǎng)開發(fā)工具 KSZ8842-PMQL Evaluation Board RoHS:否 制造商:Micrel 產(chǎn)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: |
| KSZ8842-PMQLI | 功能描述:以太網(wǎng) IC 2-Port Ethernet Switch/Repeater + 32-bit/33MHz PCI bus interface, Ind Temp (Lead Free) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)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 |
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