TDA7514 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7514

SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR

STMicroelectronics 

TDA7514

Table 60. SUBADDRESS 14: Noise Blanker

MSB

D7

D6

D5

D4

D3

D2

D1

0

0

0

0

0

1

0

1

1

0

1

0

1

1

1

1

0

0

0

1

1

0

1

1

0

1

0

0

0

1

1

0

1

1

LSB

D0

0

1

0

1

0

1

0

1

FUNCTION

Low Threshold (FM)

65 mV

60 mV

55 mV

50 mV

45 mV

40 mV

35 mV

30 mV

Noise Controlled Threshold

320 mV

260 mV

200 mV

140 mV

Noise blanker OFF

Noise blanker ON

Over deviation threshold

Over deviation adjust 2.8V

Over deviation adjust 2.0V

Over deviation adjust 1.2V

Over deviation detector OFF

(AM)

166%

156%

147%

137%

128%

118%

109%

99%

Table 61. SUBADDRESS 15: Noiseblanker & High Cut

MSB

LSB

FUNCTION

D7

D6

D5

D4

D3

D2

D1

D0

VHCH Shift ("a" factor) (**)

0

0

0

1 97%

0

0

1

0 73%

0

1

0

0 50%

1

0

0

0 32%

Strong multipath-controlled Noise Rectifier

Discharge Resistor (if bit7 byte 16 = 1)

0

0

R = infinity

0

1

R = 56Mohm

1

0

R = 33Mohm

1

1

R = 18Mohm

Noise Blanker Time

FM

AM

0

0

34 us

1130 us

0

1

24 us

755 us

1

0

29 us

950 us

1

1

22 us

651 us

(**)cfr. HCC/SB threshold table

55/74

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