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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADC3641 датащи(PDF) 44 Page - Texas Instruments |
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ADC3641 датащи(HTML) 44 Page - Texas Instruments |
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44 / 77 page  A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 Register Address <11:0> Register Data <7:0> SDIO SCLK tSCLK tS,SDIO tH,SDIO SEN tS,SEN tH,SEN RESET A11 A10 A9 A8 A7 A6 0 0 0 0 R/W Figure 8-41. Serial Register Write Timing Diagram 8.5.2.2 Register Read The device includes a mode where the contents of the internal registers can be read back using the SDIO pin. This readback mode can be useful as a diagnostic check to verify the serial interface communication between the external controller and the ADC. The procedure to read the contents of the serial registers is as follows: 1. Drive the SEN pin low 2. Set the R/W bit (A15) to 1. This setting disables any further writes to the registers. Set A[14:12] in address field to 0. 3. Initiate a serial interface cycle specifying the address of the register (A[11:0]) whose content must be read 4. The device outputs the contents (D[7:0]) of the selected register on the SDIO pin 5. The external controller can latch the contents at the SCLK falling edge A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 Register Address <11:0> Register Data <7:0> SDIO SCLK SEN A11 A10 A9 A8 A7 A6 0 0 0 1 R/W t OZD t OD t ODZ Figure 8-42. Serial Register Read Timing Diagram ADC3643 SBAS886 – OCTOBER 2020 www.ti.com 44 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated Product Folder Links: ADC3643 |
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