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MB1504L Datasheet(PDF) 4 Page - Fujitsu Component Limited. |
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MB1504L Datasheet(HTML) 4 Page - Fujitsu Component Limited. |
4 / 19 page MB1504 MB1504H MB1504L 4 PIN DESCRIPTIONS Pin No. Pin Name Descriptions 1 2 3 OSCIN VP Oscillator input Oscillator output A crystal is placed between OSCIN and OSCOUT. Power supply input for charge pump 4 VCC Power supply voltage input OSCOUT DO 5 Charge pump output The phase characteristics can be inversed depending upon the FC input. 6 GND Ground LD Phase comparator output This pin outputs high when the phase is locked. While the phase difference of fr and fp exists, the output level goes low. fIN Prescaler input The connection with an external VCO should be an AC connection. 7 8 Clock 9 Clock input for 19-bit shift register and 16-bit shift register Each rising edge of the clock shifts one bit of data into the shift registers. Serial data of binary code input The last bit of the data is a control bit. The last data bit specifies which latch is activated. When the last bit is high level and LE is high-level, data is transferred to the 15-bit latch. When the last bit is low level and LE is high level, data is transferred to the 18-bit latch. 10 Data 11 LE Load enable input (with internal pull up resistor) When LE is high level (or open), data stored in the shift register is transferred to the latch depending on the control data. FC Phase selecting input of phase comparator (with internal pull up resistor) When FC is low level, the charge pump and phase detector characteristics can be inversed. 13 Monitor pin of phase comparator input It is the same as the programmable reference divider output. 14 fr fP Monitor pin of phase comparator input It is the same as the programmable divider output. 12 Outputs for external charge pump The phase characteristics can be inversed depending on the FC input. The ØP pin is an N-channel open-drain output. 15 16 ØP ØR I/O I O — — O — O I I I I O O O O O |
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