TDA7540N datasheet(62/76 Pages) STMICROELECTRONICS

부품명	TDA7540N

상세설명	AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS)

PDF	76 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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62 / 76 page

Software specification

TDA7540N

62/76

Level gain 1.34dB

---

Level gain 4.7dB

AM audio filter “OFF”

AM audio filter “ON” (has to be set if AMNB is used !!)

Table 42.

Addr 30 stereodecoder 7 (continued)

MSB

LSB

Function

Table 43.

Addr 31 stereodecoder 8

MSB

LSB

Function

Quality noise gain =6dB

Quality noise gain =9dB

Quality noise gain =12dB

Quality noise gain =15dB

Enable AFS PIN

Disable AFS PIN

AFS influence on stereodecoder mute

No AFS influence on stereodecoder mute

PD hold activation if AFS<Vth1

PD hold activation if AFS<Vth2

0/1

not valid

0/1

not valid

AM audio delay for noise blanking “OFF”

AM audio delay for noise blanking “ON”(has to be set if

AMNB is used !!)

Table 44.

Addr 32 stereodecoder 9

MSB

LSB

Function

Deemphasis shift (25/37.5µs)

Deemphasis no shift (50/75µs)

00000

AM corner frequency = 3.18kHz

00001

AM corner frequency = 3.10kHz

00010

AM corner frequency = 3.02kHz

-----

11101

AM corner frequency = 1.12kHz

11111

AM corner frequency = 1.06kHz

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