Read Sony ICF-CD815 Service Manual online
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ICF-CD815
•
IC Pin Function Description
MAIN BOARD IC801 TC94A58FG-113 (S, D) (SYSTEM CONTROLLER, DSP)
Pin No.
Pin Name
I/O
Description
1
SEG3
O
Segment drive signal output to the LED indicator element
2
SEG2
O
Segment drive signal output terminal Not used
3
SEG1
O
Segment drive signal output to the LED indicator element
4, 5
KEY1, KEY2
I
Top panel key input terminal (A/D input)
6
ALARM A
I
ALARM A switch panel input terminal (A/D input)
7
ALARM B
I
ALARM A switch panel input terminal (A/D input)
8
MVDD
-
Power supply terminal (+3.3V)
9
MVSS
-
Ground terminal
10
CD OPEN DET
I
CD lid open/close detect switch input terminal "L": CD lid is closed
11
LIMIT SW
I
Limit switch input terminal The optical pick-up is inner position when "L"
12
DRV MUTE
O
Muting on/off control signal output to the motor/coil driver "L": muting on
13
BUZZER/GVSW
O
Buzzer sound drive signal output terminal
Gain selection signal output to the digital servo head amplifier
Gain selection signal output to the digital servo head amplifier
14
CD ON
O
Power on/off control signal output for the CD +3.3V power supply "L": CD power on
15
RADIO ON
O
Power on/off control signal output for the radio +3.3V power supply "L": radio power on
16
50/60Hz AC IN
I
Power failure detection input terminal "L": power failure, "H": power on
17
PDO
O
Phase error signal output terminal of EFM signal and PCLK signal
18
TMAX
O
TMAX detection result output terminal
19
LPFN
I
Amplifier inversion input terminal for low-pass filter of PLL system
20
LPFO
O
Amplifier output terminal for low-pass filter of PLL system
21
VCOF
-
VCO filter terminal
22
AVSS
-
Ground terminal
23
SLCO
O
D/A converter output terminal for data slice level generator
24
RFI
I
RF signal input from the digital servo head amplifier
25
AVDD
-
Power supply terminal (+3.3V)
26
VREF
-
Reference voltage terminal
27
REZI
I
Input terminal for RFRP signal zero cross
28
RFRP
I
RFRP ripple signal input from the digital servo head amplifier
29
FEI
I
Focus error signal input from the digital servo head amplifier
30
SBAD
I
Sub beam addition signal input from the digital servo head amplifier
31
TEI
I
Tracking error signal input from the digital servo head amplifier
32
TEZI
I
Tracking error zero cross input from the digital servo head amplifier
33
FOO
O
Focus equalizer output to the motor/coil driver
34
TRO
O
Tracking equalizer output to the motor/coil driver
35
RFGC
O
RF amplitude adjustment control signal output to the digital servo head amplifier
36
TEBC
O
Tracking balance signal output to the digital servo head amplifier
37
SEL
O
Automatic power control circuit on/off control signal output to the digital servo head amplifier
38
FMO
O
Feed equalizer output to the motor/coil driver
39
DMO
O
Disc equalizer output to the motor/coil driver
40
CVDD
-
Power supply terminal (+3.3V)
41
XO
O
System clock (for CD) output terminal (16.9344 MHz)
42
XI
I
System clock (for CD) input terminal (16.9344 MHz)
43
CVSS
-
Ground terminal
44
DVDD
-
Power supply terminal (+3.3V)
45
RO
O
Audio signal (R-ch) output terminal
46
DVSS
-
Ground terminal
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