HCD-C770/C990
33
33
7-2.
BLOCK DIAGRAM – AUDIO (DSP) Section –
DIGDI
DO
DIGCLK
DIGDI
DIGCLK
CSDIR
XST
RSTDIR
CDDOUT
NSMUTE
MSDATO
MSDATI
MSCK
XMSLAT
SHRRDY
SHRMUT
SDEF
SDEF, XSHD,
XDCK, XSAK
XSHD
XDCK
XSAK
EXID2
BCK2
LRCK2
EXID2
BCK2
LRCK2
EXID1
EXIMCK
EXIBCK
EXILRCK
EXID1
PLOCK
DIGDI
DO
DIGCLK
CSDIR
XST
RSTDIR
PLOCK
EXIMCK
EXIBCK
EXILRCK
XRST_DSD
54 TUN-DO
55 TUN-CLK
53 TUN-CE
51 TUNED
D5V
X600
12.288MHz
Q205
J205 (1/4)
J206 (1/3)
Q206
OPTICAL
DIGITAL IN
VIDEO 2
134-131
152, 151, 149, 148
7-10, 13-16,
98, 80-77, 75-72
97-92, 82-85, 66-64
5-1, 44-42,
D4
D1
D2
D3
SCK
BCKO
LRCKO
FM/AM TUNER PACK
AUDIO INPUT
SELECTOR
IC202
A/D CONVERTER
IC602
AMP
Q221
R-CH
DO
CK
CE
TUNED
FM-DET
FM ANT
GND
AM ANT
GND
L-CH
R-CH
DI
TUDO
TUCLK
TCE
TUN
TUDI
RDSC
RDSD
R-CH
R-CH
R-CH
TUDO
TUCLK
TCE
TUN
TUDI
COAXIAL
FM
75
Ω
AM
AV DATA BUS
SD0 – SD7
768FS
TDOSA
TDISA
TCK
TMS
TRST
AV1
AV2
AV0
RDSC
RDSD
AV2
AV0
PM
HCS
BST
RSTDSP
PM
Q903
D903
D490
12V
HCS
BST
RSTDSP
D1 – D4, SCK,
BCKO, LRCKO
ENABLE
SWITCH
Q908 – 910
POWER ON
MUTING
Q490, 492
X601
13.5MHz
• SIGNAL PATH
: CD PLAY
: AUDIO
: DVD PLAY
: OPTICAL
DIGITAL IN
: AUX IN
: TUNER
: SACD PLAY
VIDEO 1
AUDIO IN
VIDEO 2
AUDIO IN
L
R
L
R
MSDATO, MSDATI, MSCK,
XMSLAT, SHRRDY, SHRMUT
•
R-ch is omitted due
to same as L-ch.
DET AMP
Q201
X201
4.332MHz
RDS DECODER
IC201
(AEP)
(AEP)