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ADC32RF44IRMPR датащи(PDF) 56 Page - Texas Instruments |
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ADC32RF44IRMPR датащи(HTML) 56 Page - Texas Instruments |
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56 / 135 page ![]() 56 ADC32RF44 SBAS809A – FEBRUARY 2017 – REVISED MARCH 2017 www.ti.com Product Folder Links: ADC32RF44 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated 9.4.2.7 JESD204B Frame Assembly with Decimation (Dual-Band DDC): Complex Output Table 22 lists the available JESD204B formats and valid ranges for the ADC32RF44 with decimation (dual-band DDC) when using a complex output format. The ranges are limited by the SerDes line rate and the maximum ADC sample frequency. The sample alignment on the different lanes is shown in Table 23. Table 22. JESD Mode Options: Dual-Band Complex Output DECIMATION SETTING (Complex) NUMBER OF ACTIVE DDCS L M F S PLL MODE JESD MODE0 JESD MODE1 JESD MODE2 RATIO [fSerDes / fCLK (Gbps / GSPS)] Divide-by-8 2 per channel 8 8 2 1 20X 1 0 0 2.5 4 8 4 1 40X 2 0 0 5 Divide-by-9 2 per channel 8 8 2 1 20X 1 0 0 2.22 4 8 4 1 40X 2 0 0 4.44 Divide-by-10 2 per channel 8 8 2 1 20X 1 0 0 2 4 8 4 1 40X 2 0 0 4 Divide-by-12 2 per channel 8 8 2 1 20X 1 0 0 1.67 4 8 4 1 40X 2 0 0 3.33 Divide-by-16 2 per channel 8 8 2 1 20X 1 0 0 1.25 4 8 4 1 40X 2 0 0 2.5 Divide-by-18 2 per channel 8 8 2 1 20X 1 0 0 1.11 4 8 4 1 40X 2 0 0 2.22 Divide-by-20 2 per channel 8 8 2 1 20X 1 0 0 1 4 8 4 1 40X 2 0 0 2 Divide-by-24 2 per channel 4 8 4 1 40X 2 0 0 1.67 Divide-by-32 2 per channel 4 8 4 1 40X 2 0 0 1.25 (1) Blue and green shading indicates the two bands for channel A; yellow and orange shading indicates the two bands for channel B. Table 23. JESD Sample Lane Assignment: Dual-Band Complex Output(1) OUTPUT LANE LMFS = 8821 LMFS = 4841 DA0 A10[15:8] A10[7:0] DA1 A1Q0[15:8] A1Q0[7:0] A1I0[15:8] A1I0[7:0] A1Q0[15:8] A1Q0[7:0] DA2 A2I0[15:8] A2I0[7:0] A2I0[15:8] A2I0[7:0] A2Q0[15:8] A2Q0[7:0] DA3 A2Q0[15:8] A2Q0[7:0] DB0 B1I0[15:8] B1I0[7:0] DB1 B1Q0[15:8] B1Q0[7:0] B1I0[15:8] B1I0[7:0] B1Q0[15:8] B1Q0[7:0] DB2 B2I0[15:8] B2I0[7:0] B2I0[15:8] B2I0[7:0] B2Q0[15:8] B2Q0[7:0] DB3 B2Q0[15:8] B2Q0[7:0] |
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