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– MAIN Board –
IC401 BU9262AFS
N. C.
1
TESTB
2
LOGIC INPUT
SCK
3
SERIAL
SLT
4
CONTROL
CIRCUIOT
SI
5
CLKO
6
CLOCK
CLKI
7
N. C.
8
DSOUT
9
TESTOUT
10
TEST OUT
LPF1I1
11
LOW-PASS
LPF1I2
12
FILTER
LPF1O
13
ADI
14
A/D
CONVERETR
ADO
15
GND
16
– MPEG Board –
U704 PCM1748E/2K
16
15 14
SYSTEM
FUNCTION
CLOCK
CONTROL
MANAGER
INTERFACE
SYSTEM
CLOCK
INTERFACE
DLYVOL
CONTROL
INPUT
MIX
SELECTOR
MIX OUT
REFERENCE
RESET
FBVOL
LOW-PASS
RAM
FILTER
PROCESSOR
D/A
CONVERETR
13
12
11
ZERO DETECT
8 TIME OVER
SAMPLING
ENHANCED
DIGITAL FILTER
MULTI-LEVEL
WITH
DELTA-SIGMA
FUNCTION
MODULATOR
CONTROLLER
SERIAL
INPUT
1 2 3
32 MIXIN
31 MICIN
30 VDD
29 LCIN
28 RCIN
27 FBOUT
26 LCOUT
25 RCOUT
24 VREF
23 DSIG
22 VOIN
21 LPF2O
20 LPF2I2
19 LPF2I1
18 DAO
17 DAI
10
D/A
OUTPUT AMP AND
CONVERTER
LOW-PASS FILTER
D/A
OUTPUT AMP AND
CONVERTER
LOW-PASS FILTER
POWER SUPPLY
4
5
6
7 8
HCD-GP8D
9
35
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