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2184 数据表(PDF) 18 Page - Analog Devices |
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2184 数据表(HTML) 18 Page - Analog Devices |
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18 / 31 page ![]() ADSP-2184 –18– REV. 0 TIMING PARAMETERS Parameter Min Max Unit Memory Read Timing Requirements: tRDD RD Low to Data Valid 0.5 tCK – 9 + w ns tAA A0–A13, xMS to Data Valid 0.75 tCK – 12.5 + w ns tRDH Data Hold from RD High 1 ns Switching Characteristics: tRP RD Pulsewidth 0.5 tCK – 5 + w ns tCRD CLKOUT High to RD Low 0.25 tCK – 5 0.25 tCK + 7 ns tASR A0–A13, xMS Setup before RD Low 0.25 tCK – 6 ns tRDA A0–A13, xMS Hold after RD Deasserted 0.25 tCK – 3 ns tRWR RD High to RD or WR Low 0.5 tCK – 5 ns w = wait states × t CK. xMS = PMS, DMS, CMS, IOMS, BMS. CLKOUT A0 – A13 D tRDA tRWR tRP tASR tCRD tRDD tAA tRDH DMS, PMS, BMS, IOMS, CMS RD WR Figure 12. Memory Read |
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