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3 7 63 1515 0
• IC Block Diagrams
– DRIVER Board –
IC701, 712 BA6956AN
1
2
3
– MIC Board –
IC1400 TC9488FG
30
29
28
VREF
DAC
TE
ADPCM
L 13942296513
DECODE
OSC
1
2
3
– BD84 Board –
IC251 BA5947FM-E2
28
27
26
10k
50k
Pre
Vcc
www
SW
1
2
3
.
http://www.xiaoyu163.com
TSD
CONTROL LOGIC
4
5
6
7
8
27
26
25
24
23
POST
S/H
LPF
DELAY
ADPCM
ADC
DRAM
ENCODE
VOLUME CONTROL
4
5
6
7
8
25
24
23
22
100k
PIN3
POW
Vref
x
ao
7
4
5
y
6
i
http://www.xiaoyu163.com
8
– CDG Board –
IC1006 NJM2575F1-TE2
PWR
1
SAVE
2
VOUT
3
9
22
21
20
19
18
ALC
VREF
Q Q
3
6 7
1 3
VREF
ALC
9
10
11
12
13
21
20
19
18
17
16
50k
POW
D
D
D
VCC
50k
(ch3, 4)
19k
10k
POW
VCC
VCC
50k
50k
6.5k
50k
50k
Vref
PIN26
POW
VCC
D
D
D
(ch1, 2)
u163
9
10
11
12
8
13
.
2 9
9 4
2 8
75
6dB
DRIVER
LPF
CLAMP
17
16
VREF
1 5
0 5
8
2 9
9 4
VREF
14
15
15
D
m
D
co
14
HCD-GNX660
9 9
6
VCC
GND
5
VIN
4
2 8
9 9
53
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