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DAC38RF80 Datasheet(PDF) 97 Page - Texas Instruments |
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DAC38RF80 Datasheet(HTML) 97 Page - Texas Instruments |
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97 / 155 page  97 DAC38RF80, DAC38RF83, DAC38RF84 DAC38RF85, DAC38RF90, DAC38RF93 www.ti.com SLASEA3C – DECEMBER 2016 – REVISED JULY 2017 DAC38RF83 DAC38RF93 Submit Documentation Feedback Copyright © 2016–2017, Texas Instruments Incorporated 8.5.22 Output Summation and Delay Register (address = 0x19) [reset = 0x0000] Figure 99. Output Summation and Delay Register (OUTSUM) 15 14 13 12 11 10 9 8 0 0 0 0 0 0 0 x R/W R/W R/W R/W R/W R/W R/W R/W 7 6 5 4 3 2 1 0 0 0 0 1 1 0 0 1 R/W R/W R/W R/W R/W R/W R/W R/W LEGEND: R/W = Read/Write; R = Read only; -n = value after reset Table 64. OUTSUM Field Descriptions Bit Field Type Reset Description 15:12 OUTPUT_DELAY R/W 0x0 Delays the output to the DAC 0 to 15 clock cycles 11:4 Reserved R/W 0x00 Reserved 3:0 OUTSUM_SEL R/W 0x0 Selects the output summing functions. Each bit selects another sample to sum. Multiple bits can be selected. bit 0 = add the path AB sample bit 1 = add the path CD sample bit 2 = add adjacent DAC path AB sample bit 3 = add adjacent DAC path CD sample 8.5.23 NCO Phase Path AB Register (address = 0x1C) [reset = 0x0000] Figure 100. NCO Phase Path AB Register (PHASE_NCOAB) 15 14 13 12 11 10 9 8 0 0 0 0 0 0 0 x R/W R/W R/W R/W R/W R/W R/W R/W 7 6 5 4 3 2 1 0 0 0 0 1 1 1 0 0 R/W R/W R/W R/W R/W R/W R/W R/W LEGEND: R/W = Read/Write; R = Read only; -n = value after reset Table 65. PHASE_NCOAB Field Descriptions Bit Field Type Reset Description 15:0 PHASE_NCO1 Auto Sync 0x0000 The phase offset for the FULL NCO1 in the AB datapath. 8.5.24 NCO Phase Path CD Register (address = 0x1D) [reset = 0x0000] Figure 101. NCO Phase Path CD Register (PHASE_NCOCD) 15 14 13 12 11 10 9 8 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W 7 6 5 4 3 2 1 0 0 0 0 1 1 1 0 1 R/W R/W R/W R/W R/W R/W R/W R/W LEGEND: R/W = Read/Write; R = Read only; -n = value after reset Table 66. PHASE_NCOCD Field Descriptions Bit Field Type Reset Description 15:0 PHASE_NCO12 Auto Sync 0x0000 The phase offset for the FULL NCO2 in the CD datapath. |
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