Q-67106-H6514 Просмотр технического описания (PDF) - Siemens AG

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производитель

Q-67106-H6514

PLL-Frequency Synthesizer PMB2306R/PMB2306T Version 2.2

Siemens AG 

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6

6

2

2

11

13

9DD

9SS

9DD1

Positive supply voltage for serial control logic.

Ground for serial control logic.

Positive supply voltage for the preamplifiers, counters, phase

detector and charge pump.

9

11

9SS1

Ground for the preamplifiers, counters, phase detector and

charge pump.

(1RWH 7KH SLQV 9'' DQG 9'' UHVSHFWLYHO\ 966 DQG 966

KDYH WR KDYH WKH VDPH VXSSO\ YROWDJH.)

3

3

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.

4

4

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.

5

5

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).

7

7

MOD

0RGXOXV &RQWURO 2XWSXW 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.

Semiconductor Group

6

02.97

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