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ADC3561 数据表(PDF) 62 Page - Texas Instruments |
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ADC3561 数据表(HTML) 62 Page - Texas Instruments |
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62 / 85 page ![]() Figure 8-66. Register 0x1E 7 6 5 4 3 2 1 0 0 0 0 0 LVDS DATA DEL LVDS DCLK DEL R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 Table 8-28. Register 0x1E Field Descriptions Bit Field Type Reset Description 7-4 0 R/W 0 Must write 0 3-2 LVDS DATA DEL R/W 00 These bits adjust the output timing of the SLVDS output data. 00: no delay 01: Data advanced by 50 ps 10: Data delayed by 50 ps 11: Data delayed by 100 ps 1-0 LVDS DCLK DEL R/W 00 These bits adjust the output timing of the SLVDS DCLK output. 00: no delay 01: DCLK advanced by 50 ps 10: DCLK delayed by 50 ps 11: DCLK delayed by 100 ps Figure 8-67. Register 0x20/21/22 7 6 5 4 3 2 1 0 FCLK PAT [7:0] FCLK PAT [15:8] 0 SCR EN 0 0 FCLK PAT [19:16] R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 Table 8-29. Register 0x20/21/22 Field Descriptions Bit Field Type Reset Description 7-0 FCLK PAT [19:0] R/W 0xFFC00 These bits can adjust the duty cycle of the FCLK. In decimation bypass mode the FCLK pattern gets adjusted automatically for the different output resolutions. Table 8-30 shows the proper FCLK pattern values for 1-wire and 1/2-wire in real/complex decimation. 6 SCR EN R/W 0 This bit enables the output data scrambler. Digital bypass (0x24, D2) needs to be set as well. 0: Output scrambling disabled 1: Output scrambling enabled Table 8-30. FCLK Pattern for different resolution based on interface DECIMATION OUTPUT RESOLUTION 2-WIRE 1-WIRE 1/2-WIRE REAL DECIMATION 14-bit Use Default 0xFE000 Use Default 16-bit 0xFF000 18-bit 0xFF800 20-bit 0xFFC00 COMPLEX DECIMATION 14-bit 0xFFFFF 0xFFFFF 16-bit 18-bit 20-bit ADC3561, ADC3562, ADC3563 SBAS990B – FEBRUARY 2021 – REVISED OCTOBER 2022 www.ti.com 62 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: ADC3561 ADC3562 ADC3563 |
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