4-2. BLOCK DIAGRAM — AUDIO SECTION —
– 9 –
– 10 –
XT-100DAB
RF
SECTION
1
6
5
4
3
2
1
30 31
39
40
41
42
43
44
SAMPLING RATE
CONVERTER
IC301
ICLK
LRCKI
BCKI
BCKI
DI
DI
OCSL
LRCO
BCKO
MCK
LRCK
BCK
DATA
DAB RST
BCKO
D OUT
D OUT
RSTN
DIGITAL OUT
MODULATOR
IC701
7 6 4
24 22 23
14
93 94 95 11 89
18
14
16
19
13
20
9
2
1
17
11
16
DATA
LRCK
BCK
XI
CTG3
CTG2
CTG1
FSI
XTI
LRCKB
BICK
SDATA
A
OUT
L
A
OUT
R
DOI
8
6 10
17
7
9
18
5
PD
SMUTE
106
127
77
78
72
73
69
79
SYSTEM CONTROL
IC401 (2/2)
DACMUT
XAMUT
XROM CS
A1-18
D0-15
RD
95
XUNI
SEL CTL
S IN
S OUT
SCKO
DRC BUSY
XDRC MUT
71 SEL G
86
91
HWR 92
LWR
XRAM
93
EXTAL
85 XTAL
70 XMPEG RST
126 PGO
CE
108
128
A OUT
CTRL
SEL
0-2
10
7
1-3
74-76
6
13
12
14
Y5
LD
CLR
AMPIN
MUTE
BUSY
SCK
DIN
DOUT
Y7
A
B
C
G1
Y2
Y3
Y1
RESET SELECT
IC405
5
6
SDA
SCL
EEPROM
IC406
XO401
18.432KHz
SW401
(DIGITAL/ANALOG)
XO301
22.5792MHz
S1DI
BCK
LRCK
MCKOUT
SOUT1
DYNAMIC RANGE
CONTROL
IC302
MEM
BUS
CTL
IC404
1-5,18-21
24-27,42-44
7-10,13-16
29-32,35-38
41 39 40 17
28
26
11
6
A0-15
I/O 0-15
CE
SRAM
IC403
7-9,11-18
20-26
40-43,45-52
54-57
1-8,17-25
48
29-36
38-45
A0-17
DQ 0-15
FLASH ROM
IC402
OE
OE
LB
UB
WE
WE
3
7
LPF
IC503
1
AMP
IC505
R-CH
13
D/A CONVERTER
IC501
MUTE
CONTROL
Q503,505
Q501
R-CH
R-CH
-1
L
-2
R
-1
L
-2
R
CN502
ANALOG
AUDIO
OUT
CN501
ANALOG
AUDIO
IN
6
7
5
1
1
DIGITAL
IN
IC703
DIGITAL
AUDIO
IN
4
DIGITAL
OUT
IC704
DIGITAL
AUDIO
OUT
IC702
RY501
04
• Signal path
: FM
