MB15E03PV 查看數據表（PDF） - Fujitsu

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MB15E03PV

Single Serial Input PLL Frequency Synthesizer On-Chip 1.2 GHz Prescaler

Fujitsu 

MB15E03

s PIN DESCRIPTIONS

Pin no.

SSOP BCC

Pin

name

1

16

OSCIN

2

1

OSCOUT

3

2

VP

4

3

VCC

5

4

DO

6

5

GND

7

6

Xfin

8

7

fin

9

8

Clock

10

9

Data

11

10

LE

12

11

PS

13

12

ZC

14

13

LD/fout

15

14

φP

16

15

φR

I/O

Descriptions

Programmable reference divider input.

I

Oscillator input.

Connection for an crystal or a TCXO.

TCXO should be connected with a coupling capacitor.

O

Oscillator output.

Connection for an external crystal.

– Power supply voltage input for the charge pump.

– Power supply voltage input.

O

Charge pump output.

Phase of the charge pump can be reversed by FC bit.

– Ground.

I

Prescaler complementary input, and should be grounded via a

capacitor.

I

Prescaler input.

Connection with an external VCO should be done with AC coupling.

Clock input for the 19-bit shift register.

I Data is shifted into the shift register on the rising edge of the clock.

(Open is prohibited.)

Serial data input using binary code.

The last bit of the data is a control bit. (Open is prohibited.)

Control bit = ”H” ; Data is transmitted to the programmable

I reference

counter.

Control bit = ”L” ; Data is transmitted to the programmable

counter.

Load enable signal input (Open is prohibited.)

I When LE is high, the data in the shift register is transferred to a

latch, according to the control bit in the serial data.

Power saving mode control. This pin must be set at ”L” at Power-

ON.

I (Open is prohibited.)

PS = ”H” ; Normal mode

PS = ”L” ; Power saving mode

Forced high-impedance control for the charge pump (with internal

I

pull up resistor.)

ZC = ”H” ; Normal Do output.

ZC = ”L” ; Do becomes high impedance.

Lock detect signal output(LD)/phase comparator monitoring

output (fout).

O The output signal is selected by LDS bit in the serial data.

LDS = ”H” ; outputs fout (fr/fp monitoring output)

LDS = ”L” ; outputs LD (”H” at locking, ”L” at unlocking.)

O

Phase comparator output for an external charge pump. Nch open

drain output.

O

Phase comparator output for an external charge pump. CMOS

output.

3

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