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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD5669RBCBZ-1-R5 датащи(PDF) 24 Page - Analog Devices |
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AD5669RBCBZ-1-R5 датащи(HTML) 24 Page - Analog Devices |
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24 / 30 page  AD5629R/AD5669R Data Sheet Rev. F | Page 24 of 30 INPUT SHIFT REGISTER The input shift register is 24 bits wide. Data is loaded into the device as a 24-bit word under the control of a serial clock input, SCL. The input register contents for this operation is shown in Figure 53 and Figure 54. The eight MSBs make up the command byte. DB23 to DB20 are the command bits, C3, C2, C1, and C0, that control the mode of operation of the device (see Table 9 for details). The last four bits of the first byte are the address bits, A3, A2, A1, and A0, (see Table 9 for details). The rest of the bits are the 16-/12-bit data-word. The AD5669R data-word comprises the 16-bit input code (see Figure 53) while the AD5629R data word is comprised of 12- bits followed by four don’t cares (see Figure 54). MULTIPLE BYTE OPERATION Multiple byte operation is supported on the AD5629R/AD5669R. Command 1001 is reserved for multiple byte operation (see Table 8) A 2-byte operation is useful for applications that require fast DAC updating and do not need to change the command byte. The S bit (DB22) in the command register can be set to 1 for the 2-byte mode of operation. For standard 3-byte and 4-byte operation, the S bit (DB22) in the command byte should be set to 0. |
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