TDA7514 datasheet(60/74 Pages) STMICROELECTRONICS

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TDA7514

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Table 69. SUBADDRESS 23: ISS Detector

Table 70. SUBADDRESS 24: ISS Test

MSB

LSB

FUNCTION

ISS Enable (active low)

0ON

1OFF

ISS filter ON/OFF manual control

0OFF

1ON

ISS Filter Bandwidth manual control

120 kHz

80 kHz

discharge current;charge current mid; narrow

1uA; 74uA; 124uA

3uA; 72uA; 122uA

5uA; 70uA; 120uA

9uA; 66uA; 116uA

15uA; 60uA; 110uA

not used

MSB

LSB

FUNCTION

ISS test muxer selector (test signal at pin

SMETERTC if bit7 byte17 tuner software is 1)

0001

MPthreshold

0010

ACNthreshold ("ac" threshold)

0011

Dwthreshold ("dev" threshold)

0100

Dthreshold ("dev+" threshold)

0101

ACWthreshold ("ac+" threshold)

0110

0111

MDSCO

1000

ISS out

1001

dev+

1010

dev

1011

refdev

1100

DEMVout

output if bit 7 byte 28 tuner = 0

input if bit 7 byte 28 tuner = 1

ISS AC/MP test mode (pin SD)

Internal AC signal is connected to

QUALIDETECTOR AC input (normal mode)

Internal AC signal is output to pin SD (test mode)

QUALIDETECTOR AC input is driven by internal

AC signal (normal mode)

QUALIDETECTOR AC input is driven by pin SD

(test mode)

Internal MP signal is connected to

QUALIDETECTOR MP input (normal mode)

Internal MP signal is output to pin SD (test mode)

QUALIDETECTOR MP input is driven by internal

MP signal (normal mode)

QUALIDETECTOR MP input is driven by pin SD

(test mode)

TDA7514 数据表(PDF) 60 Page - STMicroelectronics

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