TDA9850 データシートの表示（PDF） - Philips Electronics

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TDA9850

I2C-bus controlled BTSC stereo/SAP decoder

Philips Electronics 

Philips Semiconductors

I2C-bus controlled BTSC stereo/SAP decoder

Preliminary specification

TDA9850

Table 7 Function of the bits in Table 6

ST0 to ST3

SP0 to SP3

STEREO, SAP

LMU

SMU

L0 to L3

ADJ

A1X to A2X

A1X

A2X

TC0 to TC2

STS

BITS

FUNCTION

noise threshold for stereo

noise threshold for SAP

mode selection

mute control OUTL and OUTR

mute control SAP

input level adjustment

stereo adjustment on/off

stereo alignment data

for wideband expander

for spectral expander

timing current alignment data

stereo level switch

Table 8 Mode selection

FUNCTION MODE AT

OUTL

OUTR

SAP

Mute

Left

Mono

Mono

Mono

Mono

SAP

mute

right

mono

SAP

mute

mono

DATA

TRANSMISSION STATUS

INTERNAL SWITCH, READABLE BITS: STP, SAPP

SAP received

no SAP received

STEREO received

no STEREO received

SAP received

no SAP received

independent

SETTING BITS

STEREO

1

1

1

1

0

0

0

SAP

1

1

0

0

1

1

0

Table 9 Timing current setting

+30%

+20%

+10%

Nominal

−10%

−20%

−30%

FUNCTION

IS RANGE

DATA

TC2

TC1

TC0

1

0

0

1

0

1

1

1

1

0

1

1

0

1

0

0

0

1

0

0

0

1995 Jun 19

17

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