QS7777PF 参数 Datasheet PDF下载

QS7777PF/CF

FUNCTIONAL DESCRIPTION

Operating Modes (BYP, MO, AR, AC)

The control pins BYP, MO, AR, and AC select the operating mode bypass/QSurround signal processing of the

FLIN, FRIN, RLIN, RRIN, CIN, and SUBIN input signals and determine the outputs on FLOUT, FROUT,

RLOUT, RROUT, and COUT. The relationship between the inputs and outputs as selected by the control pins

is shown in the following table.

Control pins

BYP

0

0

0

0

0

0

0

0

1

1

1

1

1

1

1

1

MO

0

0

0

0

1

1

1

1

0

0

0

0

1

1

1

1

AR

0

0

1

1

0

0

1

1

0

0

1

1

0

0

1

1

AC

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

Qx(FLIN)

Qx(FLIN)

Qx(FLIN)

Qx(FLIN)

Qx(FLIN)

Qx(FLIN)

Qx(FLIN)

Qx(FLIN)

FLIN

FLIN

FLIN

FLIN

Q1(M(F))

Q1(M(F))

Qx(FLIN)

FLIN

+RLIN

+RLIN

+CIN

+CIN

+Q1(M(R))

+Q1(M(R))

+CIN

+CIN

FLOUT

+Q1(RLIN)

+Q1(RLIN)

+CIN

+CIN

Qx(FRIN)

Qx(FRIN)

Qx(FRIN)

Qx(FRIN)

Qx(FRIN)

Qx(FRIN)

Qx(FRIN)

Qx(FRIN)

FRIN

FRIN

FRIN

FRIN

Q1(M(F))

Q1(M(F))

Qx(FRIN)

FRIN

q(M(F))

q(FLIN)

FLIN

q(M(F))

q(FRIN)

FRIN

+RRIN

+RRIN

+CIN

RLIN

RLIN

RRIN

RRIN

CIN

+CIN

CIN

+Q1(M(R))

+Q1(M(R))

+CIN

q(M(R))

q(M(R))

q(M(R))

q(M(R))

CIN

+CIN

CIN

Output signals

1

FROUT

+Q1(RRIN)

+Q1(RRIN)

+CIN

q(RLIN)

q(RLIN)

q(RRIN)

q(RRIN)

CIN

+CIN

CIN

RLOUT

RROUT

COUT

1. Qx( ), Q1( ), and q( ) = QSurround processed signals. For example, Qx(FLIN) indicates a QSurround-processed signal derived from FLIN input.

R = RLIN + RRIN signal, and F = FLIN + FRIN signal.

M( ) = monaural to stereo converted signal. For example, M(R) indicates monaural to stereo conversion of the RLIN+RRIN signal.

The SUBIN signal is normally output on both FLOUT and FRO U T.

NIPPON PRECISION CIRCUITS—7