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ADP1034ACPZ-1-R7 датащи(PDF) 31 Page - Analog Devices |
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ADP1034ACPZ-1-R7 датащи(HTML) 31 Page - Analog Devices |
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31 / 41 page ![]() Data Sheet ADP1034 THEORY OF OPERATION analog.com Rev. 0 | 31 of 41 GPIO Data Channels The general-purpose data channels are provided as space-saving isolated datapaths where timing is not critical. The dc values of all low speed general‑purpose inputs on a given side of the device are sampled simultaneously, packetized, and shifted across a single isolation coil. The process is then reversed by reading the inputs on the opposite side of the device, packetizing the inputs and sending these inputs back for similar processing. Because of the sampled nature of this process, the general-purpose data channels exhibit a sampling uncertainty that resembles 10 μs of peak jitter. For proper operation of the GPIO channels, refer to Table 16. Power both MVDD and SVDD2 within the specified input voltage range for these pins. Table 16. Truth Table for GPIO Channels MVDD State SVDD2 State xGPIx MGPOx SGPOx Test Conditions/Comments Unpowered Powered Don’t care Low Low During startup Powered Unpowered Don’t care Low Low During startup Powered Powered High High High Normal operation Powered Powered Low Low Low Normal operation Powered Powered to Unpowered Don’t care Hold Low Hold means that the current state of the outputs are preserved Powered to Unpowered Powered Don’t care Low Hold Hold means that the current state of the outputs are preserved |
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