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Q-67106-H6514 Folha de dados(PDF) 6 Page - Siemens Semiconductor Group |
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Q-67106-H6514 Folha de dados(HTML) 6 Page - Siemens Semiconductor Group |
6 / 35 page 30%530%7 2YHUYLHZ Semiconductor Group 6 02.97 3LQ 'HILQLWLRQVDQG )XQFWLRQV 7DEOH '62 76623 6\PERO )XQFWLRQ 66 9 DD Positive supply voltage for serial control logic. 22 9 SS Ground for serial control logic. 11 13 9 DD 1 Positive supply voltage for the preamplifiers, counters, phase detector and charge pump. 911 9 SS 1 Ground for the preamplifiers, counters, phase detector and charge pump. ( 1RWH 7KHSLQV 9'' DQG 9'' UHVSHFWLYHO\ 966 DQG 966 KDYH WRKDYH WKH VDPHVXSSO\ YROWDJH.) 33 EN /LQH%XV (QDEOH Enable line of the serial control with internal pull-up resistor. When EN = H the input signals CLK and DA are disabled internally. When EN = L the serial control is activated. The received data are transferred into the latches with the positive edge of the EN-signal. 44 DA /LQH%XV 'DWD Serial data input with internal pull-up resistor. The last two bits before the EN-signal define the destination address. In a byte- oriented data structure the transmitted data have to end with the EN-signal, i.e. bits to be filled in (don’t care) are transmitted first. 55 CLK /LQH%XV &ORFN Clock line with internal pull-up resistor. The serial data are read into the internal shift register with the positive edge (see pulse diagram for serial data control). 77 MOD 0RGXOXV&RQWURO2XWSXW for external dual modulus prescaler. The modulus output is low at the beginning of the cycle. When the a-counter has reached its set value, MOD switches to high. When the n-counter has reached its set value, MOD switches to low again, and the cycle starts from the top. When the prescaler has the counter factor P or P + 1 (P for MOD = H, P +1 for MOD = L), the overall scaling factor is NP + A. The value of the a- counter must be smaller than that of the n-counter. The trigger edge of the modulus signal to the input signal can be selected (see programming tables and MOD A, B) according to the needs of the prescaler. In single modulus operation and for standby operation in dual modulus operation, the output is low. |
Nº de peça semelhante - Q-67106-H6514 |
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Descrição semelhante - Q-67106-H6514 |
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