LC72130 View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LC72130

AM/FM PLL Frequency Synthesizer

SANYO -> Panasonic 

LC72130, 72130M

2. DI Control Data Functions

No.

Control block/data

Functions

Programmable divider data • Sets the programmable divider divisor.

P0 to P15

This value is a binary value whose MSB is P15. The position of the LSB varies

depending on DVS and SNS. (*: don’t care)

(1)

DVS, SNS

Reference divider data

R0 to R3

(2)

XS

IF counter control data

CTE

GT0, GT1

DVS SNS LSB

Divisor setting (N)

Actual divisor

1

*

P0

272 to 65535

Twice the value of the setting

0

1

P0

272 to 65535

The value of the setting

0

0

P4

4 to 4095

The value of the setting

Note: P0 to P3 are ignored when P4 is the LSB.

• These bits select the signal input pin for the programmable divider and switch the input

frequency range. (*: don’t care)

DVS SNS

Input pin

Input frequency range

1

*

FMIN

10 to 160 MHz

0

1

AMIN

2 to 40 MHz

0

0

AMIN

0.5 to 10 MHz

Note: See the “Programmable Divider” item for more information.

• Selects the reference frequency (fref).

R3

R2

R1

R0

Reference frequency (kHz)

0

0

0

0

0

0

0

1

0

0

1

0

0

0

1

1

0

1

0

0

0

1

0

1

0

1

1

0

0

1

1

1

100

50

25

25

12.5

6.25

3.125

3.125

1

0

0

0

10

1

0

0

1

9

1

0

1

0

5

1

0

1

1

1

1

1

0

0

3

1

1

0

1

15

1

1

1

0

PLL INHIBIT + X’tal OSC STOP

1

1

1

1

PLL INHIBIT

Note: PLL INHIBIT

The programmable divider block and the IF counter block are stopped, the FMIN,

AMIN, and IFIN pins are set to the pull-down state (ground), and the charge pump

goes to the high impedance state.

• Crystal resonator selection

XS = 0: 4.5 MHz

XS = 1: 7.2 MHz

The 7.2 MHz frequency is selected after the power ON reset.

• IF counter measurement start data

CTE = 1: Counter start

CTE = 0: Counter reset

• Determines the IF counter measurement period.

GT1

GT0

Measurement time (ms)

Wait time (ms)

(3)

0

0

4

3 to 4

0

1

8

3 to 4

1

0

32

7 to 8

1

1

64

Note: See the “IF Counter” item for more information.

7 to 8

I/O port specification data • Specifies the I/O direction for the bidirectional pins IO1 and IO2.

(4) IOC1, IOC2

Data: 0 = input mode, 1 = output mode

Output port data

(5) BO1 to BO5, IO1, IO2

• Data that determines the output from the BO1 to BO5, IO1 and IO2 output ports

Data: 0 = open, 1 = low

• The data = 0 (open) state is selected after the power ON reset.

Related data

IFS

IOC1

IOC2

Continued on next page.

No. 4973-10/22

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