TDA7514 datasheet(40/74 Pages) STMICROELECTRONICS

tên linh kiện	TDA7514

Giải thích chi tiết về linh kiện	SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR

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TDA7514

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Table 33. SUBADDRESS 18: PLL Test, 456KHz VCO Adjust Start, ISS MP Gain and SD OUT MODE

MSB

LSB

FUNCTION

PLL TEST "testdout1" (pin #LFHC)

no test

fref [ref freq divid out]

output, 3V

fsyn [VCO freq div out]

output, 3V

phi [VCO prescal out]

output, 3V

psm [prescal reset]

output, 3V

phi

input, 3/5V

fsyn

input, 3/5V

sstop (cntres), fsyn

input, 3/5V

PLL TEST "sstop" (pin #SD)

(byte<21>bit<10>=01

no test

output, 3V

ifref

output, 3V

zeroone

output, 3V

stim

output, 3V

ifcout

output, 3V

fsyn

output, 3V

ltst (lock det test)

output, 3V

inlock

output, 3V

456 kHz self-adjustment state machine

if byte<19>bit<0>=0 and byte<1>bit<0>=0

Waiting

1START

Adjacent Channel detector rectifier offset

0.39 V

0.78 V

1.14 V

1.49 V

Quality Seek Mode

0fs

Enable seek mode

AdjCh detector filter gain

Filter 2 Gain = 8.5 dB

Filter 2 Gain = 14.5 dB

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