MB1504

MB1504H

MB1504L

4

PIN DESCRIPTIONS

Pin No.

Pin Name

Descriptions

1

2

3

Oscillator input

Oscillator output

Power supply input for charge pump

4

Power supply voltage input

5

Charge pump output

The phase characteristics can be inversed depending upon the FC input.

6

GND

Ground

LD

Phase comparator output

level goes low.

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

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