PD178004A_15 Datasheet, PDF(23/58 Page) Renesas Technology Corp

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PD178004A_15 Datasheet, PDF (23/58 Pages) Renesas Technology Corp – PD178004A_15

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ÂµPD178004A, 178006A, 178016A, 178018A

5.7 PLL FREQUENCY SYNTHESIZER

Figure 5-10. PLL Frequency Synthesizer Block Diagram

Mixer

PLL Mode

Select Register

PLL PLL

MD1 MD0

Internal Bus

PLL Data Register

(PLLRL, PLLRH, PLLR0)

PWM

Data Transfer Register

PLL

NS0

VCOH

VCOL

Input Select

Block

Programmable

Divider

Phase

Comparator

( Ï -DET)

Charge

Pump

EO1

EO0

Voltage

Note

Control

Generator

Note

Low pass

Filter

4.5 MHz

Reference

Frequency

Generator

Unlock

PLL PLL PLL PLL

PLL

RF3 RF2 RF1 RF0

UL0

PLL Reference

Mode Register

PLL Unlock

FF Judge

Internal Bus

EOC EOC

ON1 ON0

EO Select

Note External circuit

Cautions 1. Be sure to set EOCON0 to 0.

2. For the ÂµPD178004A and 178006A, do not set EOCON1 to 1.

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