For Communications Equipment

MN6152U

Pin Descriptions

Pin No.

Symbol

Function Description

Crystal oscillator connection pins:

3FV

Frequency divider output signal in comparator stage.

Phase comparator input monitor.

Power supply

Low-pass filter connection pin. Use a passive filter.

Ground

7LD

Phase comparator output pin:

"H" level for locked; "L"level for unlocked.

Frequency divider input pin in comparating stage.

9

CLK

Shift register clock input pin.

The chip latches data at the rising edge of the CLK signal.

10

DATA

Shift register data input pin.

The final two bits in the data select the write latch:

"11" for R-latch; "01" for N-latch.

11

LE

Load enable signal input pin.

This is the latch-write-enable signal. It is at "H" level for write.

12

PS

Power save control signal input pin.

"H" level input starts the frequency divider and places the chip in operational mode.

"L" level input places the chip in standby mode, which saves power.

The chip switches the internal charge pump output to the H-z state and the loop

is opened.

13

FR

Reference frequency divider output signal.

Phase comparator input monitor.

14

LC

Charge pump control signal output pin.

When frequency divider operation is stopped, this pin is at "L" level, the

internal charge pump output is in the high-impedance state, and the loop is opened.

15

OV

Phase comparator output pin for external charge pump.

16

OR