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PM3350-SW 参数 Datasheet PDF下载

PM3350-SW图片预览
型号: PM3350-SW
PDF下载: 下载PDF文件 查看货源
内容描述: 8端口以太网交换机 [8 PORT ETHERNET SWITCH]
分类和应用: 以太网以太网:16GBASE-T
文件页数/大小: 224 页 / 990 K
品牌: PMC [ PMC-SIERRA, INC ]
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PM3350 ELAN 8 X10  
ELAN 8X10  
DATA SHEET  
PMC-970109  
ISSUE 3  
8 PORT ETHERNET SWITCH  
DEVICE DATA  
Introduction  
The PM3350 ELAN 8x10 offers a complete system-level solution, integrating all  
required elements (except packet-buffer/address-table memory and transceiver logic) in  
a single high-density VLSI chip. It is a true single-chip managed switch; all the required  
functions, including address learning/aging, management, RMON-level statistics  
collection, spanning tree support and self-configuration, are performed by the ELAN  
8x10 without need for external CPUs or logic. In addition, the functions required for  
expandability are also integrated into the device.  
The ELAN 8x10 is built around a RISC CPU based Switch Processor core, coupled with  
a multi-channel DMA controller, MAC-layer interface logic, FIFOs, a PCI-based  
expansion port and a flexible memory controller.  
Switch Processor  
An on-chip Switch Processor is primarily responsible for performing the Ethernet / IEEE  
802.3 packet switching functions, and can switch packets arriving simultaneously from  
the eight 10BaseT ports and the expansion port at full wire rates using address tables  
that it creates and maintains in external local memory. Store-and-forward switching is  
performed, allowing the Switch Processor to detect CRC, length and alignment errors  
and reject bad packets. The Switch Processor also supports IEEE 802.3  
group/functional address handling. Address aging, topology change updates, and  
statistics collection are performed by the Switch Processor as well.  
The Switch Processor unit allows the device to support high-level capabilities. In  
addition, it implements the full IEEE 802.1d spanning-tree transparent bridging protocol,  
which allows the ELAN 8x10 to act as a eight-port expandable learning bridge,  
performing learning, filtering and redirection at full speed. Finally, the Switch Processor  
can host an SNMP agent for powerful remote switch configuration and diagnostic  
capabilities, allowing systems built around the ELAN 8x10 to be managed in-band using  
standard management platforms. When additional switch devices are connected to the  
ELAN 8x10 expansion port, the Switch Processors in all ELAN 8x10s intercommunicate  
to transparently support a distributed SNMP MIB.  
In host-based applications, the host CPU may bypass the on-chip SNMP agent to  
communicate directly with the Switch Processor for configuration, control and  
monitoring purposes.  
Multichannel DMA Processor  
The on-chip DMA Coprocessor contains eleven independent and concurrently operating  
channels, one for each of the eight 10BaseT ports and three dedicated to the  
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND PMC-SIERRA, INC. CUSTOMERS ONLY  
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