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1-4. A.PRO Section (Audio Processor)
The S.PRO section has following functions.
(1) Woofer processing (L+R output)
(2) High band, low band, balance control
(3) Sound volume control, cyclone level control
(4) Cyclone ON/OFF
All these processing are carried out according to the BUS
signals sent from a microcomputer.
Fig. 2-3 shows a block diagram of the A.PRO IC.
TA1217N
Lin
Rin
Cin
Win
SDA
SCL
TONE CONTROL
LPF
Center
LEVEL
Woofer
LEVEL
VOLUME
BALANCE
I C
2
D/A
CONV
I/O
L out
R out
C out
W out
SAP Ident.
STE Ident.
R-in C-in L-in
SCL SDA W-out O-out L-out
From From From
A/V Dolby A/V
to Q670 to Q640 to Q670 to Q670
Via QS101
7
31 24
23
22 19
26
25
18
10
30 9
8
28
127
29
22 32
36
4
56
17
16
15
14
13
12
11
34
30
2
3
20
21
Fig. 2-3 A.PRO block diagram