PM73488中文资料PDF规格书
PM73488规格书详情
DESCRIPTION
The PM73488 (QSE) is an advanced communications device that enables the implementation of high performance switching systems. The QSE is a 32 × 32 cell based switch element, with a total sustainable bandwidth of 5 Gb/s. (The peak, or raw, bandwidth is much more than that: about 8 Gb/s). The QSE is designed to be used with other QSE’s as part of a larger switch fabric. Various QSE combinations allow fabrics with theoretical peak capacities ranging from 5 Gb/s (one QSE) to 160 Gb/s. The QSE is not ATM specific; however, should the QSE be used for switching ATM cells, the QSE cell size is large enough to allow efficient direct mapping between QSE Cells and ATM cells.
FEATURES
Switching Algorithm
• Supports blocking resolution in the switch fabric.
• Guarantees a lower bound on switch performance using a patented randomization algorithm called Evil Twin Switching.
• Determines routes using specified bits in the header (self-routing switch fabric) for unicast traffic.
• Determines output groupings using a lookup table for multicast traffic.
• Allows output ports to be combined in groups of 1, 2, 4, 8, 16, or 32 for unicast traffic.
• Allows output ports to be combined in groups of 1, 2, or 4 for multicast traffic.
Multicast Support
• Supports optimal tree-based multicast replication in the switch fabric.
• Supports 512 internal multicast groups, expandable to 256K with external SRAM.
• Provides 64 internal cell buffers for multicast cells.
Diagnostic/Robustness Features
• Checks the header parity.
• Counts tagged cells.
• Checks for connectivity and stuck-at faults on all switch fabric interconnects.
I/O Features
• Provides 32 switch fabric interfaces with integrated phase aligner clock recovery circuitry.
• Provides a Start-Of-Cell (SOC) output per four switch element interfaces.
• Provides an external 8-bit Synchronous SRAM (SSRAM) interface for multicast group expansion.
• Provides a demultiplexed address/data CPU interface.
• Provides an IEEE 1149.1 (JTAG) boundary scan test bus.
Physical Characteristics
• 3.3 V supply voltage.
• 5 V tolerant inputs.
• 596-pin Enhanced Plastic Ball Grid Array (EPBGA) package.
• Operates from a single 66 MHz clock.
产品属性
- 型号:
PM73488
- 制造商:
PMC
- 制造商全称:
PMC
- 功能描述:
5 Gbit/s ATM Switch Fabric Element
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
PMC |
19+ |
BGA |
95 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
PMC |
23+ |
NA |
2840 |
航宇科工半导体-中国航天科工集团战略合作伙伴! |
询价 | ||
PMC |
2020+ |
BGA |
35000 |
新到原装货,专营系列:查询请Q我 |
询价 | ||
PMC-SIERRA/PMC-Sierra,Inc |
21+ |
128 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | |||
PMC |
2021+ |
NA |
3280 |
十年专营原装现货,假一赔十 |
询价 | ||
PMC-SIERRA |
699839 |
集团化配单-有更多数量-免费送样-原包装正品现货-正规 |
询价 | ||||
PMC |
24+ |
BGA |
6868 |
原装现货,可开13%税票 |
询价 | ||
PMC |
22+ |
BGA |
9852 |
只做原装正品现货!或订货假一赔十! |
询价 | ||
PMC |
23+ |
BGA |
5000 |
原装正品,假一罚十 |
询价 | ||
PMC |
589220 |
16余年资质 绝对原盒原盘 更多数量 |
询价 |