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| 型號： | KSZ8842-PMBL AM TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 44/119頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ETHERNET SW 2PORT 100LFBGA |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 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： | 帶卷 (TR) |
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Micrel, Inc.
KSZ8842-PMQL/PMBL
October 2007
30
M9999-100207-1.5
forwarded.
Learning is
disabled.
specific packets to the processor. The processor may send
packets to the port(s) in this state. Address learning is disabled on
the port in this state.
Learning State
Port Setting
Software Action
Only packets to
and from the
processor are
forwarded.
Learning is
enabled.
“transmit enable = 0,
receive enable = 0,
learning disable = 0”
The processor should program the “Static MAC table” with the
entries that it needs to receive (for example, BPDU packets). The
“overriding” bit should be set so that the switch will forward those
specific packets to the processor. The processor may send
packets to the port(s) in this state. Address learning is enabled on
the port in this state.
Forwarding
State
Port Setting
Software Action
Packets are
forwarded and
received normally.
Learning is
enabled.
“transmit enable = 1,
receive enable = 1,
learning disable = 0”
The processor programs the “Static MAC table” with the entries
that it needs to receive (for example, BPDU packets). The
“overriding” bit is set so that the switch forwards those specific
packets to the processor. The processor can send packets to the
port(s) in this state. Address learning is enabled on the port in this
state.
Table 4. KSZ8841-PMQL/PMBL EEPROM Format
IGMP Support
For Internet Group Management Protocol (IGMP) support in Layer 2, the KSZ8842-PMQL/PMBL provides two
components:
“IGMP” Snooping
The KSZ8842-PMQL/PMBL traps IGMP packets and forwards them only to the processor (host port). 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.
“Multicast Address Insertion” in the Static MAC Table
Once the multicast address is programmed in the Static MAC Table, the multicast session is trimmed to the subscribed
ports, instead of broadcasting to all ports.
IPv6 MLD Snooping
The KSZ8842-PMQL/PMBL traps IPv6 Multicast Listener Discovery (MLD) packets and forwards them only to the
processor (host port). MLD snooping is controlled by SGCR2[13] (MLD snooping enable) and SGCR2[12] (MLD option).
Setting SGCR2[13] causes the KSZ8842-PMQL/PMBL to trap packets that meet all of the following conditions:
IPv6 multicast packets
Hop count limit = 1
IPv6 next header = 1 or 58 (or = 0 with hop-by-hop next header = 1 or 58)
If SGCR2[12] =1, IPv6 next header = 43, 44, 50, 51, or 60 (or =0 with hop-by-hop next header = 43, 44, 50, 51,
or 60)
Port Mirroring Support
KSZ8842-PMQL/PMBL supports “Port Mirroring” comprehensively as:
“receive only” mirror on a port
All the packets received on the port are mirrored on the sniffer port. For example, port 1 is programmed to be “receive
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. The KSZ8842-
PMQL/PMBL can optionally even forward “bad” received packets to the “sniffer port”.
“transmit only” mirror on a port
All the packets transmitted on the port are mirrored on the sniffer port. For example, port 1 is programmed to be
“transmit sniff” and the host port is programmed to be the “sniffer port”. A packet received on port 2 is destined to port 1
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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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