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ADV601JS 数据表(PDF) 46 Page - Analog Devices |
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ADV601JS 数据表(HTML) 46 Page - Analog Devices |
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46 / 52 page ![]() ADV601 –46– REV. 0 Table XXXIV. Host (Indirect Address, Indirect Data, and Interrupt Mask/Status) Write Timing Parameters Parameter Description Min Max Unit tWR_D_WRC WR Signal, Direct Register, Write Cycle Time (at 27 MHz VCLK) N/A 1 N/A ns tWR_D_PWA WR Signal, Direct Register, Pulse Width Asserted (at 27 MHz VCLK) N/A 1 N/A ns tWR_D_PWD WR Signal, Direct Register, Pulse Width Deasserted (at 27 MHz VCLK) 5 N/A ns tADR_D_WRS ADR Bus, Direct Register, Write Setup 2 N/A ns tADR_D_WRH ADR Bus, Direct Register, Write Hold 2 N/A ns tDATA_D_WRS DATA Bus, Direct Register, Write Setup –20 N/A ns tDATA_D_WRH DATA Bus, Direct Register, Write Hold 0 N/A ns tWR_D_RDT WR Signal, Direct Register, Read Turnaround (After a Write) (at 27 MHz VCLK) 35.6 2 N/A ns tACK_D_WRD ACK Signal, Direct Register, Write Delay (at 27 MHz VCLK) 8.6 182.1 3, 4 ns tACK_D_WROH ACK Signal, Direct Register, Write Output Hold 11 N/A ns NOTES 1 WR input must be asserted (low) until ACK is asserted (low). 2Minimum t WR_D_RDT varies with VCLK according to the formula: t WR_D_RDT (MIN) = 0.8 (VCLK Period) +7.4. 3Maximum t WR_D_WRD varies with VCLK according to the formula: t ACK_D_WRD (MAX) = 4.3 (VCLK Period) +14.8. 4During STATS_R deasserted (low) conditions, t ACK_D_WRD may be as long as 52 VCLK periods. VALID VALID VALID VALID (I) ADR, BE, CS (I) WR (I) DATA (O) ACK (I) RD t ADR_D_WRS t DATA_D_WRS t ACK_D_WROH t WR_D_WRC t WR_D_PWA t WR_D_PWD t ADR_D_WRH t DATA_D_WRH t ACK_D_WRD t WR_D_RDT Figure 38. Host (Indirect Address, Indirect Register Data, and Interrupt Mask/Status) Write Transfer Timing |
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