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AM79C850 Datasheet(PDF) 87 Page - Advanced Micro Devices |
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AM79C850 Datasheet(HTML) 87 Page - Advanced Micro Devices |
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87 / 97 page ![]() P R E L I M I N A R Y AMD 87 SUPERNET 3 SWITCHING CHARACTERISTICS over COMMERCIAL operating ranges Host Interface & Buffer Memory Parameter No. Symbol Parameter Description Min Max Unit 76 tS HSREQ2–0 Setup Time to BMCLK High 15 ns 77 tH HSREQ2–0 Hold Time to BMCLK High 5 ns 78 tPD BMCLK High to HSACK High 25 ns 79 tPD BMCLK High to HSACK Low 25 ns 80 tPD BMCLK High to RDATA High 25 ns 81 tPD BMCLK High to RDATA Low 25 ns 82 tPD BMCLK High to QCNTRL2–0 Valid 25 ns 83 tPD QCNTRL2–0 Invalid from BMCLK High 5 ns 84 tPD BMCLK High to ADDR 15–0 Enabled 0 ns 85 tPD BMCLK High to ADDR 15–0 Valid 27 ns 86 tPD BMCLK High to CSO Low 26 ns 87 tPD BMCLK Low to RD Low 22 ns 88 tS BD 31:0, BDP 3:0, BDTAG Setup Time to RD High 10 ns 89 tH BD 31:0, BDP 3:0, BDTAG Hold Time from RD High 0 ns 90 Reserved ns 91 tPD CSO Invalid from RD or WR High 0 ns 92 tPD ADDR 15:0 Invalid from RD or WR High 4 ns 93 tPD BMCLK Low to WR Low 18 ns 94 tS ADDR 15:0 Valid to WR Low Setup Time 0 ns 95 tPD BMCLK Low to BD 31:0, BDP 3:0, BDTAG Enabled 0 ns 96 tPD BMCLK Low to BD 31:0, BDP 3:0, BDTAG Valid 26 ns 97 tPD BD 31:0, BDP 3:0, BDTAG Valid before WR High 15 ns 98 Reserved ns 99 tPD BD 31:0, BDP 3:0, BDTAG Invalid from WR High 0 ns 100 tPD BMCLK High to BD 31:0, BDP 3:0, BDTAG Disabled 30 ns 121 tPD Read Pulse Width 38 43 ns 122 tPD Write Pulse Width 37 ns 123 tS ADDR 15:0 Valid to RD Low Setup Time 7 14 ns |
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