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UPD178002 Datasheet(PDF) 20 Page - NEC |
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UPD178002 Datasheet(HTML) 20 Page - NEC |
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20 / 48 page  20 µPD178002, 178003 Data Sheet U12628EJ3V0DS00 5.7 PLL Frequency Synthesizer Figure 5-7. Block Diagram of PLL Frequency Synthesizer Note External circuit Internal bus Internal bus (PLLRF) (PLLUL) PLL mode select register PLL data transfer register PLL NS0 PLL MD0 PLL MD1 PLL RF2 PLL RF1 PLL RF0 PLL UL0 PLL reference mode register PLL unlock FF judge register PLL RF3 2 Input select block Programmable divider Phase comparator ( -DET) Unlock FF Reference frequency generator 4.5 MHz 4 Charge pump EO1 EO0 VCOH (PLLMD) (PLLNS) VCOL Mixer 2 fN fr PLL data register (PLLRL, PLLRH, PLLR0) φ Voltage control generator Low pass filter Note Note |
Similar Part No. - UPD178002 |
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Similar Description - UPD178002 |
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