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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CS8900A-CQ датащи(PDF) 10 Page - Cirrus Logic |
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CS8900A-CQ датащи(HTML) 10 Page - Cirrus Logic |
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10 / 128 page  10 DS271PP3 CS8900A Crystal LAN™ ISA Ethernet Controller CIRRUS LOGIC PRODUCT DATA SHEET 1.3 Key Features and Benefits 1.3.1 Very Low Cost The CS8900A is designed to provide the lowest- cost Ethernet solution available for embedded ap- plications, portable motherboards, non-ISA bus systems and adapter cards. Cost-saving features in- clude: • Integrated RAM eliminates the need for expen- sive external memory chips. • On-chip 10BASE-T filters allow designers to use simple isolation transformers instead of more costly filter/transformer packages. • The serial EEPROM port, used for configura- tion and initialization, eliminates the need for expensive switches and jumpers. • The CS8900A is designed to be used on a 2- layer circuit board instead of a more expensive multilayer board. • The 8900A-based solution offers the smallest footprint available, saving valuable printed cir- cuit board area. • A set of certified software drivers is available at no charge, eliminating the need for costly soft- ware development. 1.3.2 High Performance The CS8900A is a full 16-bit Ethernet controller designed to provide optimal system performance by minimizing time on the ISA bus and CPU over- head per frame. It offers equal or superior perfor- mance for less money when compared to other Ethernet controllers. The CS8900A’s PacketPage architecture allows software to select whichever access method is best suited to each particular CPU/ISA-bus configuration. When compared to older I/O-space designs, PacketPage is faster, sim- pler and more efficient. To boost performance further, the CS8900A in- cludes several key features that increase throughput and lower CPU overhead, including: • StreamTransfer cuts up to 87% of interrupts to the host CPU during large block transfers. • Auto-Switch DMA allows the CS8900A to maximize throughput while minimizing missed frames. • Early interrupts allow the host to preprocess in- coming frames. • On-chip buffering of full frames cuts the amount of host bandwidth needed to manage Ethernet traffic. 1.3.3 Low Power and Low Noise For low power needs, the CS8900A offers three power-down options: Hardware Standby, Hard- ware Suspend, and Software Suspend. In Standby mode, the chip is powered down with the exception of the 10BASE-T receiver, which is enabled to lis- ten for link activity. In either Hardware or Software Suspend mode, the receiver is disabled and power consumption drops to the micro-ampere range. In addition, the CS8900A has been designed for very low noise emission, thus shortening the time required for EMI testing and qualification. 1.3.4 Complete Support The CS8900A comes with a suite of software driv- ers for immediate use with most industry standard network operating systems. In addition, complete evaluation kits and manufacturing packages are available, significantly reducing the cost and time required to produce new Ethernet products. |
Аналогичный номер детали - CS8900A-CQ |
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Аналогичное описание - CS8900A-CQ |
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