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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD9680 датащи(PDF) 89 Page - Analog Devices |
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AD9680 датащи(HTML) 89 Page - Analog Devices |
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89 / 97 page  Product Overview Online Documentation Design Resources Discussion Sample & Buy Data Sheet AD9680 Rev. C | Page 89 of 97 Reg Addr (Hex) Register Name Bit 7 (MSB) Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 (LSB) Default Notes 0x327 DDC 0 output test mode selection 0 0 0 0 0 Q output test mode enable 0 = disabled 1 = enabled from Channel B 0 I output test mode enable 0 = disabled 1 = enabled from Channel A 0x00 Refer to the DDC section 0x330 DDC 1 control Mixer select 0 = real mixer 1 = complex mixer Gain select 0 = 0 dB gain 1 = 6 dB gain IF (intermediate frequency) mode 00 = variable IF mode (mixers and NCO enabled) 01 = 0 Hz IF mode (mixer bypassed, NCO disabled) 10 = fADC/4 Hz IF mode (fADC/4 downmixing mode) 11 = test mode (mixer inputs forced to +fS, NCO enabled) Complex to real enable 0 = disabled 1 = enabled 0 Decimation rate select (complex to real disabled) 11 = decimate by 2 00 = decimate by 4 01 = decimate by 8 10 = decimate by 16 (complex to real enabled) 11 = decimate by 1 00 = decimate by 2 01 = decimate by 4 10 = decimate by 8 0x00 0x331 DDC 1 input selection 0 0 0 0 0 Q input select 0 = Ch A 1 = Ch B 0 I input select 0 = Ch A 1 = Ch B 0x05 Refer to the DDC section 0x334 DDC 1 frequency LSB DDC 1 NCO frequency value, Bits[7:0] twos complement 0x00 0x335 DDC 1 frequency MSB X X X X DDC 1 NCO frequency value, Bits[11:8] twos complement 0x00 0x340 DDC 1 phase LSB DDC 1 NCO phase value, Bits[7:0] twos complement 0x00 0x341 DDC 1 phase MSB X X X X DDC 1 NCO phase value, Bits[11:8] twos complement 0x00 0x347 DDC 1 output test mode selection 0 0 0 0 0 Q output test mode enable 0 = disabled 1 = enabled from Ch B 0 I output test mode enable 0 = disabled 1 = enabled from Ch A 0x00 Refer to the DDC section 0x350 DDC 2 control Mixer select 0 = real mixer 1 = complex mixer Gain select 0 = 0 dB gain 1 = 6 dB gain IF mode 00 = variable IF mode (mixers and NCO enabled) 01 = 0 Hz IF mode (mixer bypassed, NCO disabled) 10 = fADC/4 Hz IF mode (fADC/4 downmixing mode) 11 = test mode (mixer inputs forced to +fS, NCO enabled) Complex to real enable 0 = disabled 1 = enabled 0 Decimation rate select (complex to real disabled) 11 = decimate by 2 00 = decimate by 4 01 = decimate by 8 10 = decimate by 16 (complex to real enabled) 11 = decimate by 1 00 = decimate by 2 01 = decimate by 4 10 = decimate by 8 0x00 0x351 DDC 2 input selection 0 0 0 0 0 Q input select 0 = Ch A 1 = Ch B 0 I input select 0 = Ch A 1 = Ch B 0x00 Refer to the DDC section 0x354 DDC 2 frequency LSB DDC 2 NCO frequency value, Bits[7:0] twos complement 0x00 |
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