Philips FR980 - MPEG DECODER MODULE; I;O Block Diagram; I;O Pins; SHORT DESCRIPTION

MPEG DECODER MODULE
V/O Block Diagram
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MPEG2 AUDIO
DECODER
£S5P56002
=
AA7367
74HC 157
FRONT L
DOLBY AC-3
HECOBER
§5P56009
aes SUB-CPU
noe HB6473258CP
VO Pins
DIGITAL INPUT
JMO1 : COAX1 digital IN - CINCH
JRO1 : COAX2 digital IN - CINCH
JRO2 : Optical digital IN - TOS Link
MAIN CPU connector ( J651 ) Interface for Main CPU
IFREQ : bidir
+5VD : output
IFACK : bidir
IFDATA - | : input
IFDATA - O : output
IFCLK : output
AUDIO I/O and Supply connector
-5V : supply
GND : ground
RESET _ : reset to sub CPU
RT : analog input to ADC
+5VD : supply
+5VA : supply
LT : analog input to ADC
MUTE : control output
R : analog output
L : analog output
RS : analog output
LS : analog output
C : analog output
LFE : analog output
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2-5
SHORT DESCRIPTION
The Hitachi sub-CPU (Q691) communicates with the MAIN CPU
(QU01) of the FR980 via the SPi bus.
Modes and user settings are received ; status is reported back.
The Q691 is connected to the DSP56002 (Q601) via its
parallel host interface and to the DSP56009 (Q631) via the
serial host interface (configured as 12C slave.)
The Q691 downloads the DSP code of the 56002 via the
parallel! host interface, and the code for the 56009 via the 12C
interface. DSP code is stored in the internal ROM of the Q691.
The Q691 will set the modes and parameters of the DSP
programs and will monitor the status of the DSP programs.
The Q691 directly controls the audio components which are
DIR (QRO2), ADC (QK01), DAC (QD01, QD31, QD51) and
other devices.
MPEG-2 / AC-3 Decoding
Source : Digital Input (Coaxl, Coax2, OPT)
Out : max. 5.1ch (L, R, C, LFE, LS, RS)
MPEG: The Q601 decodes MPEG bitstream and
output the decoded signal to Q631.
The Q631 divides signal and delay the Center
and Surround signals.
AC-3: The 56009 directly gets bitstream from QR02,
and decodes the signal.
PCM/ Pro Logic, 3 Stereo, Movie, Hall, Matrix, Stereo
Decoding.
Source : Digital Input (Coaxl, Coax2, OPT)
Out: max. 4ch (L, R, ©, LS, RS)
The Q631 directly gets audio data from QRO2,
and reproduces the each decoded signals.
MPEG-2 / AC-3 / PCM Detection
The Q601 will detect whether the received data is MPEG-2 or
AC-3.
The QRO02 will detects whether the received SPDIF is PCM-
audio or Not.
The MAIN CPU of the FR980 will automatically switch the DSP
module in the correct mode.
Analog / Pro Logic, 3 Stereo, Movie, Hall, Matrix,
Decoding.
Source : Analog input (Lt / Rt) A//D converted by QK01
Out: max. 4ch (L, R, C, LS, RS)
The Q631 directly gets audio data from QK01,
and reproduces the each decoded signals.