LC72135M 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LC72135M

PLL Frequency Synthesizer for Electronic Tuning

SANYO -> Panasonic 

Pin Functions

Symbol

Pin No.

Type

LC72135M

Functions

XIN

XOUT

1

20

Xtal OSC

• Crystal resonator connection

(4.5/7.2 MHz)

Circuit configuration

FMIN

AMIN

CE

CL

DI

DO

VDD

• FMIN is selected when the serial data input DVS bit is

set to 1.

• The input frequency range is from 10 to 160 MHz.

14

Local oscillator

signal input

• The input signal passes through the internal divide-by-

two prescaler and is input to the swallow counter.

• The divisor can be in the range 272 to 65535. However,

since the signal has passed through the divide-by-two

prescaler, the actual divisor is twice the set value.

• AMIN is selected when the serial data input DVS bit is

set to 0.

• When the serial data input SNS bit is set to 1:

— The input frequency range is 2 to 40 MHz.

— The signal is directly input to the swallow counter.

13

Local oscillator

signal input

— The divisor can be in the range 272 to 65535, and

the divisor used will be the value set.

• When the serial data input SNS bit is set to 0:

— The input frequency range is 0.5 to 10 MHz.

— The signal is directly input to a 12-bit programmable

divider.

— The divisor can be in the range 4 to 4095, and the

divisor used will be the value set.

2

Chip enable

Set this pin high when inputting (DI) or outputting (DO)

serial data.

4

Clock

• Used as the synchronization clock when inputting (DI) or

outputting (DO) serial data.

3

Data input

• Inputs serial data transferred from the controller to the

LC72135M.

• Outputs serial data transferred from the LC72135M to

5

Data output

the controller.

The content of the output data is determined by the

serial data DOC0 to DOC2.

• The LC72135M power supply pin (VDD = 4.5 to 5.5 V)

15

Power supply

• The power on reset circuit operates when power is first

applied.

Continued on next page.

No. 5175-6/24

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