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AD9548/PCBZ датащи(PDF) 54 Page - Analog Devices |
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AD9548/PCBZ датащи(HTML) 54 Page - Analog Devices |
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54 / 112 page ![]() AD9548 Rev. 0 | Page 54 of 112 DATA BIT N – 1 DATA BIT N CS SCLK SDIO SDO tDV Figure 56. 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 57. Serial Control Port Write—LSB First, 16-Bit Instruction, Two Bytes of Data CS SCLK SDIO tHI tLO tCLK tS tDS tDH tC BIT N BIT N + 1 Figure 58. Serial Control Port Timing—Write Table 32. Serial Control Port Timing Parameter Description tDS Setup time between data and the rising edge of SCLK tDH Hold time between data and the rising edge of SCLK tCLK Period of the clock tS Setup time between the CS falling edge and the SCLK rising edge (start of the communication cycle) tC Setup time between the SCLK rising edge and CS rising edge (end of the communication cycle) tHI Minimum period that SCLK should be in a logic high state tLO Minimum period that SCLK should be in a logic low state tDV SCLK to valid SDIO and SDO (see Figure 56) |
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