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AD5378ABC データシート(PDF) 25 Page - Analog Devices |
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AD5378ABC データシート(HTML) 25 Page - Analog Devices |
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25 / 28 page ![]() Preliminary Technical Data AD5378 Rev. PrA | Page 25 of 28 ADDRESS DECODING The AD5378 contains an 8-bit address bus, A7 to A0. This address bus allows each DAC input register (x1), each offset (c) register, and each gain (m) register to be individually updated. The REG1 and REG0 bits in the special function register (SFR) (see Table 10) show the decoding for data, offset, and gain registers. When all 32 DAC channels are selected, Address Bits A[3:0] are ignored. Table 18. DAC Group Addressing A7 A6 A5 A4 Group 0 0 0 0 All 32 DACs 0 0 0 1 Group A 0 0 1 0 Group B 0 0 1 1 Groups A, B 0 1 0 0 Group C 0 1 0 1 Groups A, C 0 1 1 0 Groups B, C 0 1 1 1 Groups A, B, C 1 0 0 0 Group D 1 0 0 1 Groups A, D 1 0 1 0 Groups B, D 1 0 1 1 Groups A, B, D 1 1 0 0 Groups C, D 1 1 0 1 Groups A, C, D 1 1 1 0 Groups B, C, D 1 1 1 1 Groups A, B, C, D A3 A2 A1 A0 Data/Offset/Gain/INC-DEC Register 0 0 0 0 Register 0 0 0 0 1 Register 1 0 0 1 0 Register 2 0 0 1 1 Register 3 0 1 0 0 Register 4 0 1 0 1 Register 5 1 0 0 0 Register 6 1 0 0 1 Register 7 |
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