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DAC5687IPZP 데이터시트(PDF) 27 Page - Texas Instruments |
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DAC5687IPZP 데이터시트(HTML) 27 Page - Texas Instruments |
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27 / 72 page ![]() www.ti.com Register Name: SER_DATA_0— Address: 0x06, Default = 0x00 Register Name: SER_DATA_1— Address: 0x07, Default = 0x00 Register Name: BYPASS_MASK_CNTL— Address: 0x08, Default = 0x00 Register Name: NCO_FREQ_0— Address: 0x09, Default = 0x00 Register Name: NCO_FREQ_1— Address: 0x0A, Default = 0x00 Register Name: NCO_FREQ_2— Address: 0x0C, Default = 0x40 DAC5687 SLWS164B – FEBRUARY 2005 – REVISED JUNE 2005 Table 4. Synchronization Source sync_fifo (2:0) Synchronization Source 000 txenable pin 001 phstr pin 010 qflag pin 011 db(15) 100 da(15) first transition (one shot) 101 Software sync using SIF write 110 Sync source disabled (always off) 111 Always on BIT 7 BIT 0 dac_data(7:0) 0 0 0 0 0 0 0 0 dac_data(7:0): Lower 8 bits of DAC data input to the DACs when dac_ser_data is set. BIT 7 BIT 0 dac_data(15:8) 0 0 0 0 0 0 0 0 dac_data(15:8): Upper 8 bits of DAC data input to the DACs when dac_ser_data is set. BIT 7 BIT 0 fast__latch bp_ invsinc bp_fir3 bp_qmc bp_fmix bp_fir2 bp_fir1 nco_only 0 0 0 0 0 0 0 0 These modes are for factory use only – leave as default. BIT 7 BIT 0 freq(7:0) 0 0 0 0 0 0 0 0 freq(7:0): Bits 7:0 of the NCO frequency word. BIT 7 BIT 0 freq(15:8) 0 0 0 0 0 0 0 0 freq(15:8): Bits 15:8 of the NCO frequency word. BIT 7 BIT 0 freq(23:16) 0 0 0 0 0 0 0 0 27 |
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