MPC930 Freescale Semiconductor, Inc, MPC930 Datasheet
MPC930
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MPC930 Summary of contents
Page 1
... The MPC930/931 devices offer a great deal of flexibility in what is used as the PLL reference. The MPC930 offers an integrated crystal oscillator that allows for an inexpensive crystal to be used as the frequency reference. For more information on the crystal oscillator please refer to the applications section of this data sheet ...
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... MPC930 MPC931 GNDO 25 Qa1 26 Qa0 27 VCCO 28 MPC930/ MPC931 Div_Sela 29 Div_Selb 30 Div_Selc Figure 1. 32–Lead Pinout (Top View) (Pullup) Power_Dn (Pullup) PLL_En (Pulldown) TCLK_Sel (Pullup) TCLK MPC930 xtal1 xtal OSC xtal2 Ext_FB (Pullup) (Pulldown) ExtFB_Sel (Pulldown) ...
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... VCO VCO/2 Power_Dn SHUT_DN0 SHUT_DN1 SHUT_DN0 SHUT_DN1 TIMING SOLUTIONS BR1333 — Rev 6 Figure 3. Power_Dn Timing Diagram Figure 4. Shut_Dn Timing Diagram 3 MPC930 MPC931 MOTOROLA ...
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... I CCPLL Maximum PLL Supply Current The MPC930/931 outputs can drive series or parallel terminated 50Ω (or 50Ω /2) transmission lines on the incident edge (see Applications Info section). 3. Inputs have pull–up/pull–down resistors which affect input current. MOTOROLA Min – ...
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... MPC930 AC CHARACTERISTICS ( 3.3V 5%) Symbol Characteristic f xtal Crystal Oscillator Frequency Range f ref Input Reference Frequency t os Output–to–Output Skew (Note 4.) f VCO VCO Lock Range f max Maximum Output Frequency t pd TCLK to EXT_FB Delay t pw Output Duty Cycle (Note 4 Output Rise/Fall Time (Note 4 ...
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... Power_Dn pin can be used to situate the VCO into a frequency range in which the PLL will be stable. The design of the PLL is such that for output frequencies between 25 and 180MHz the MPC930/931 can generally be configured into a stable region. Table 2. Input Reference/Output Frequency Relationships (Internal Feedback Only) ...
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... MPC931 is recommended over the MPC930. The MPC931 has been optimized and specified specifically for use as a zero delay buffer. When used as a zero delay buffer the MPC930/931 will likely nested clock tree application. For these applications the MPC931 offers a LVPECL clock input as a TIMING SOLUTIONS BR1333 — ...
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... For the case where all of the outputs are switching at the same frequency the total jitter is exactly equal to the PLL jitter device, like the MPC930/931, where a number of the outputs can be switching synchronously but at different frequencies a “multi–modal” ...
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... DC voltage drop that will be seen between the V CC supply and the PLL_VCC pin of the MPC930/931. From the data sheet the I PLL_VCC current (the current sourced through the PLL_VCC pin) is typically 15mA (20mA maximum), assuming that a minimum of 3 ...
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... Therefore in the majority of cases a parallel specified crystal can be used with the MPC930 with just a minor frequency error due to the actual series resonant frequency of the parallel resonant specified crystal. Typically ...
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... V CC /2. This technique draws a fairly high level of DC current and thus only a single terminated line can TIMING SOLUTIONS BR1333 — Rev 6 be driven by each output of the MPC930/931 clock driver. For the series terminated case however there current draw, thus the outputs can drive multiple series terminated lines ...
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... MPC930 MPC931 3.0 OutA 3.8956 OutB 2 3.9386 2.0 In 1.5 1.0 0 TIME (nS) Figure 17. Single versus Dual Waveforms Since this step is well above the threshold region it will not cause any false clock triggering, however designers may be uncomfortable with unwanted reflections on the line. To ...
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... N É É É É É É SECTION AE– MPC930 MPC931 DETAIL Y NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DATUM PLANE –AB– IS LOCATED AT BOTTOM OF LEAD AND IS COINCIDENT WITH THE LEAD WHERE THE LEAD EXITS THE PLASTIC BODY AT THE BOTTOM OF THE PARTING LINE. 4. DATUMS – ...
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... MPC930 MPC931 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...