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AD9525/PCBZ 数据表(PDF) 29 Page - Analog Devices |
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AD9525/PCBZ 数据表(HTML) 29 Page - Analog Devices |
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29 / 48 page  Data Sheet AD9525 Rev. 0 | Page 29 of 48 Table 26. Serial Control Port, 16-Bit Instruction Word, MSB First MSB LSB I15 I14 I13 I12 I11 I10 I9 I8 I7 I6 I5 I4 I3 I2 I1 I0 R/W W1 W0 A12 = 0 A11 = 0 A10 = 0 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 CS SCLK DON'T CARE SDIO A12 W0 W1 R/W A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 DON'T CARE DON'T CARE DON'T CARE 16-BIT INSTRUCTION HEADER REGISTER (N) DATA REGISTER (N – 1) DATA Figure 28. Serial Control Port Write—MSB First, 16-Bit Instruction, Two Bytes of Data CS SCLK SDIO SDO REGISTER (N) DATA 16-BIT INSTRUCTION HEADER REGISTER (N – 1) DATA REGISTER (N – 2) DATA REGISTER (N – 3) DATA A12 W0 W1 R/W A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 DON'T CARE DON'T CARE DON'T CARE DON'T CARE D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 Figure 29. Serial Control Port Read—MSB First, 16-Bit Instruction, Four Bytes of Data tS DON'T CARE DON'T CARE W1 W0 A12 A11 A10 A9 A8 A7 A6 A5 D4 D3 D2 D1 D0 DON'T CARE DON'T CARE R/W tDS tDH tHIGH tLOW tCLK tC CS SCLK SDIO Figure 30. Serial Control Port Write—MSB First, 16-Bit Instruction, Timing Measurements DATA BIT N – 1 DATA BIT N CS SCLK SDIO SDO tDV Figure 31. Timing Diagram for Serial Control Port Register Read CS SCLK DON'T CARE DON'T CARE 16-BIT INSTRUCTION HEADER REGISTER (N) DATA REGISTER (N + 1) DATA SDIO DON'T CARE DON'T CARE A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 D1 D0 R/W W1 W0 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7 Figure 32. Serial Control Port Write—LSB First, 16-Bit Instruction, Two Bytes of Data |
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