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AD9929BBCZ датащи(PDF) 57 Page - Analog Devices |
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AD9929BBCZ датащи(HTML) 57 Page - Analog Devices |
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57 / 64 page ![]() AD9929 Rev. A | Page 57 of 64 SHUT-DOWN MODE OPERATION Recommended Power-Down Sequence When the AD9929 is going to be powered down, the following sequence is recommended (refer to Figure 68 for each step). 1. Program OUTCONT_REG (Address 0x05) = 0. 2. Program registers AFESTBY (Address 0x05) = 0 and DIGSTBY (Address 0x05) = 0. 3. Remove power from AD9929. VDD (INPUT) SERIAL WRITES VD (OUTPUT) DIGITAL OUTPUTS H2, RG, MSHUT, STROBE H1, VSUB CLI (INPUT) HD (OUTPUT) OUTCONT (INTERNAL) ODD FIELD EVEN FIELD ODD FIELD AFESTBY (REGISTER) DIGSTBY (REGISTER) 4 DCLK1 NOTE 1DCLK2 WILL BE OUTPUT ON THE FD/DCLK2 PIN 16 PROVIDING REGISTER DCLK2SEL (ADDRESS 0xD5) = 1. DCLK21 Figure 68. Recommended Shut-Down Sequence |
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