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MPC972 데이터시트(PDF) 2 Page - Motorola, Inc |
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MPC972 데이터시트(HTML) 2 Page - Motorola, Inc |
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2 / 14 page ![]() MPC972 MPC973 MOTOROLA TIMING SOLUTIONS BR1333 — Rev 6 2 fselb1 fselb0 fsela1 fsela0 Qa3 VCCO Qa2 GNDO Qa1 VCCO Qa0 GNDO VCO_Sel fselFB1 QSync GNDO Qc0 VCCO Qc1 fselc0 fselc1 Qc2 VCCO Qc3 GNDO Inv_Clk 40 41 42 43 44 45 46 47 48 49 50 51 52 25 24 23 22 21 20 19 18 17 16 15 14 1234 56789 10 11 12 13 39 38 37 36 35 34 33 32 31 30 29 28 27 26 MPC972/ MPC973 Figure 1. 52–Lead Pinout (Top View) FUNCTION TABLE 1 fsela1 fsela0 Qa fselb1 fselb0 Qb fselc1 fselc0 Qc 0 0 1 1 0 1 0 1 ÷4 ÷6 ÷8 ÷12 0 0 1 1 0 1 0 1 ÷4 ÷6 ÷8 ÷10 0 0 1 1 0 1 0 1 ÷2 ÷4 ÷6 ÷8 FUNCTION TABLE 2 fselFB2 fselFB1 fselFB0 QFB 0 0 0 0 0 0 1 1 0 1 0 1 ÷4 ÷6 ÷8 ÷10 1 1 1 1 0 0 1 1 0 1 0 1 ÷8 ÷12 ÷16 ÷20 FUNCTION TABLE 3 Control Pin Logic ‘0’ Logic ‘1’ VCO_Sel VCO/2 VCO Ref_Sel TCLK Xtal (PECL) TCLK_Sel TCLK0 TCLK1 PLL_En Bypass PLL Enable PLL MR/OE Master Reset/Output Hi–Z Enable Outputs Inv_Clk Non–Inverted Qc2, Qc3 Inverted Qc2, Qc3 |
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