GM6535 データシートの表示（PDF） - Hyundai Micro Electronics

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GM6535

60 MHz Universal Programmable Dual PLL Frequency synthesizer

Hyundai Micro Electronics 

GM6535

Reference Frequency

Counter Identifier = 0

Reference

Frequency

Select

Reference Frequency

Counter Divide Ratio

AUX

D in

0

REF Tx-0 Rx-0

ENABLE SELECT SELECT

12-BITS REF FREQ

DATA

Select

Reference

Frequency

Select

fR1

fR1

S1

S2

Aux Reference

Frequency Counter

Divide Ratio

14-BITS AUX REF FREQ

DATA

CLK

ENB

NOTE: ENB must be high during the serial transfer.

Figure 9. Programming Format of Auxiliary/reference Frequency Counter

MCU Using

Serial Peripheral

Interface Port

D in

CLK

ENB

Universal PLL

Aux Data Bit = 0

Figure 10. MCU Interface Using SPI

ADin

MCU Using

Normal I/O Port

D in

CLK

ENB

Universal PLL

Aux Data Bit = 1

Figure 11. MCU Interface Using Normal I/O Ports with Both Din

And A Din for Faster Programming Time

Control Register

Identifier = 1

D in

1

0

MSB

AUX DATA SELECT = 0

Control Register Data

TEST

BIT

AUX

Data

Select

REF

OUT

÷3/÷4

TxPD

Enable

RxPD

Enable

Ref PD

Enable

LSB

CLK

ENB

NOTE: ENB must be high during the serial transfer.

Figure 12. Programming Format for control Register (3-Pin Interfacing Scheme)

9

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