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MB15F03SLPV1 Datasheet(PDF) 8 Page - Fujitsu Component Limited. |
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MB15F03SLPV1 Datasheet(HTML) 8 Page - Fujitsu Component Limited. |
8 / 25 page 8 MB15F03SL s FUNCTIONAL DESCRIPTION The divide ratio can be calculated using the following equation: fVCO = [(M × N) + A] × fOSC ÷ R (A < N) fVCO : Output frequency of external voltage controlled oscillator (VCO) M : Preset divide ratio of dual modulus prescaler (8or 16 for IF-PLL, 64 or 128 for RF-PLL) N : Preset divide ratio of binary 11-bit programmable counter (3 to 2,047) A : Preset divide ratio of binary 7-bit swallow counter (0 ≤ A ≤ 127) fOSC : Reference oscillation frequency R : Preset divide ratio of binary 14-bit programmable reference counter (3 to 16,383) Serial Data Input Serial data is entered using three pins, Data pin, Clock pin, and LE pin. Programmable dividers of IF/RF-PLL sections, programmable reference dividers of IF/RF-PLL sections are controlled individually. Serial data of binary data is entered through Data pin. On rising edge of Clock, one bit of serial data is transferred into the shift register. When the LE signal is taken high, the data stored in the shift register is transferred to one of latch of them depending upon the control bit data setting. Table.1 Control Bit Shift Register Configuration Control bit Destination of serial data CN1 CN2 L L The programmable reference counter for the IF-PLL H L The programmable reference counter for the RF-PLL L H The programmable counter and the swallow counter for the IF-PLL H H The programmable counter and the swallow counter for the RF-PLL Programmable Reference Counter MSB Data Flow CN1,2 : Control bit [Table. 1] R1 to R14 : Divide ratio setting bit for the programmable reference counter (5 to 16,383)[Table. 2] T1, 2 : Test purpose bit [Table. 3] CS : Charge pump currnet select bit [Table. 9] X : Dummy bits (Set “0” or “1”) NOTE: Data input with MSB first. 123456789 10 11 12 13 14 15 16 17 18 19 20 21 22 23 C N 1 C N 2 T 1 T 2 R 1 R 2 R 3 R 4 R 5 R 6 R 7 R 8 R 9 R 10 R 11 R 12 R 13 R 14 C S XXXX LSB |
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