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ISL36356A-APDK-EVAL Fiches technique(PDF) 5 Page - Intersil Corporation |
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ISL36356A-APDK-EVAL Fiches technique(HTML) 5 Page - Intersil Corporation |
5 / 7 page 5 Block Diagram ISL3856 MAC See “The ISL3856 Media Access Controller (MAC) Protocol Handler” section. BBP ISL3863 The BaseBand Processor uses CCK modulation and a Rake architecture to reduce the effects of multipath. This reduces the error rates in typical office environments to improve overall data throughput. IF HFA3783 The IF is a linear design with AGC. This permits the use of equalizers in the BBP. An IF overload detector and selectable low gain LNA mode work with the BBP to extend dynamic range without sacrificing sensitivity. The IF LO frequency is generated by an external VCO. Filtering at the IF is done by a SAW BandPass filter. HFA3683 / HFA3983 RF The RF IC’s are produced in advanced SiGe technology to realize improvements in integration, performance, and power consumption. Integral PLL’s in both RF and IF parts eliminate the need for an external synthesizer. The HFA3683’s internal LNA noise figure is improved so that an external LNA IC is no longer needed. The chipset is designed so that the parts can be interfaced with few external components. The RF LO frequency is generated by an external VCO. The PA incorporates an integral power detector that is monitored by the BBP. The BBP controls the IF gain to maintain constant output levels. Antenna System A dual spatial integrated antenna system is used to select the most optimal signal. The antennas are sleeved dipoles directly connected to the PCB. Ethernet PHY STATUS LEDS ISL3856 MAC 16MHz SNMP Linux OS Applications DHCP ... MVC Driver Bridging Layer TCP/ IP Stack 4Mx16 or 8Mx16 SDRAM PHY I/O I/O CONTROL DMA CTRL RADIO Ethernet MAC MVC SW WEP ENGINE 802 .11 Protocol handling 2Mx8 or 4Mx8 Parallel FLASH FIGURE 2. ISL36356A-APDK BLOCK DIAGRAM ISL36356A-APDK |
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