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ADS5404 Datasheet(PDF) 28 Page - Texas Instruments |
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ADS5404 Datasheet(HTML) 28 Page - Texas Instruments |
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28 / 40 page ![]() D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 A0 A1 A2 A3 A4 A5 A6 RWB SDIO SDENB SCLK Read = 1 Write = 0 7 bit address space 16bit data: D15 is MSB, D0 is LSB ADS5402 SLAS936 – MARCH 2013 www.ti.com Serial Register Readout The device includes a mode where the contents of the internal registers can be read back using the SDO/SDIO pins. This read-back mode may be useful as a diagnostic check to verify the serial interface communication between the external controller and the ADC. 1. Drive SDENB pin low 2. Set the RW bit (A7) to '1'. This setting disables any further writes to the registers 3. Initiate a serial interface cycle specifying the address of the register (A6 to A0) whose content has to be read. 4. The device outputs the contents (D15 to D0) of the selected register on the SDO/SDIO pin 5. The external controller can latch the contents at the SCLK rising edge. 6. To enable register writes, reset the RW register bit to '0'. Figure 41. Serial Register Read Timing Diagram 28 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Product Folder Links: ADS5402 |
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