STV0056AF datasheet(3/27 Pages) STMICROELECTRONICS

3 / 27 page

Pin Number

Name

Function

S3 RTN R

Auxiliary Audio Return Right (from decoder)

AGC L

AGC Peak Detector Capacitor Left

S3 OUT L

Auxiliary Audio Output L (to decoder)

S3 OUT R

Auxiliary Audio Output R (to decoder)

I/O/22kHz

Digital Input/Output or 22kHz Output

SCL

2C Bus Clock

SDA

2C Bus Data

Hardware Address

J17 R

J17 Deemphasis Time Constant Right

J17 L

J17 Deemphasis Time Constant Left

XTL

4/8MHz Quartz Crystal or Clock Input

VDD 5V

Digital 5V Power Supply

Not Connected

GND 5V

Digital Power Ground

CPUMP L

FM PLL Charge Pump Capacitor Left

DET L

FM PLL Filter Left

U75 L

Deemphasis Time Constant Left

AMPLK L

Amplitude Detector Capacitor Left

AGC R

AGC Peak Detector Capacitor Right

41 - 42

A GND L

Audio Ground

VREF

2.4V Reference

44 - 45

A 12V

Audio 12V Supply

AMPLK R

Amplitude Detector Capacitor Left

DET R

FM PLL Filter Right

U75 R

Deemphasis Time Constant Right

CPUMP R

FM PLL Charge Pump Capacitor Right

IREF

Current Reference Resistor

PK OUT R

Noise Reduction Peak Detector Output Right

PK OUT L

Noise Reduction Peak Detector Output Left

LEVEL L

Noise Reduction Level Left

PK IN L

Noise Reduction Peak Detector Input

FC L

Audio Roll-off Left

A GND R

Audio Ground

FC R

Audio Roll-off Right

PK IN R

Noise Reduction Peak Detector Input Right

LEVEL R

Noise Reduction Level Right

S1 VID RTN

TV-Scart 1 Video Return

S3 VID RTN

Decoder-Scart Video Return

VOL R

Volume Controlled Audio Out Right

S3 VID OUT

Decoder-Scart Video Output

S1 VID OUT

TV-Scart 1 Video Output

PIN ASSIGNMENT (continued)

STV0056AF

3/27

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