IC301 (TC9461F) : CD DSP & Digital Servo Processor
IC301 receives the RF output signal of IC201 demodulates EFM, transfer to IC701 (TC6817F), and
converts the analog audio signal output through the D/A convertor. RF, TE and FE signal of IC201,
related to servo, passes through the servo circuit of IC301, outputs the control signal to PWM or
D/A, and are transferred to Drive IC for the most desired servo.
Block Diagram
76
DVDD
77
RO
78
DVSS
79
DVR
80
LO
81
DVDD
82
TEST1
83
TEST2
84
TEST3
85
BUS0
86
BUS1
87
BUS2
88
BUS3
89
VDD
90
VSS
91
BUCK
92
/CCE
93
TEST4
94
/TSMOD
95
/RST
96
TEST0
97
/HSO
98
/UHSO
99
EMPH
100
LRCK
1
VSS
2
BCK
3
AOUT
4
DOUT
5
MBOV
6
IPF
7
SBOK
8
CLCK
9
VDD
10
VSS
11
DATA
12
SFSY
13
SBSY
14
SPCK
15
SPDA
16
COFS
17
MONIT
18
VDD
19
TESIOO
20
P2VREF
21
SPDO
22
PDOS
23
PDO
24
TMAXS
25
TMAX
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
XVDD
XO
XI
XVSS
VDD
PXO
PXI
VSS
TESIO1
TESIN
/DACT
/CKSE
/DMOUT
IO3
IO2
IO1
IO0
VSS
VDD
FLGD
FLGC
FLGB
FLGA
SEL
2VREF
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
DMO
FVO
FMO
TEBC
RFCC
VREF
TRO
FOO
TEZI
TEI
TSIN
SBAD
FEI
RFRP
RFZI
RFCT
AVDC
RFI
SLCO
AVSS
VCOF
VCOREF
PVREF
LPFO
LPFN
+
-
+
-
+
-
+
-
LPF
1 BIT
DAC
CLOCK
Gen.
SERVO
CONTROL
PWM
D/A
A/D
ROM
DIGITAL
EQUALIZER
AUTO ADJ.
CIRCUIT
RAM
CLV SERVO
SYNC Signal
Compensator
EFM decoder
PWM
DATA
SLICE
VCO
PLL TMAX
STATUS
SUB CODE
decoding
Circuit
AUDIO
OUT CIRCUIT
u-COM
Interface
16K RAM
DIGITAL
Address
Circuit
Error
Correction
26