Sony HCD-C990 Service Manual - Page 90

Dvd Board, Ic401, Cxd3068q Digital Signal Processor, Digital Servo Processor

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HCD-C770/C990 • DVD BOARD IC401 CXD3068Q (DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 Pin Name DVDD0 XRST MUTE DATA XLAT CLOK SENS SCLK ATSK WFCK RFCK XPCK GFS C2PO SCOR C4M WDCK DVSS0 COUT MIRR DFCT FOK PWMI LOCK MDP SSTP FSTO DVDD1 SFDR SRDR TFDR TRDR FFDR FRDR DVSS1 TEST TES1 VC FE SE TE CE RFDC ADIO AVSS0 IGEN I/O Description - Power supply terminal (+3.3V) (digital system) I Reset signal input from the mechanism controller "L": reset I Muting on/off control signal input from the mechanism controller "H": muting on I Serial data input from the mechanism controller I Serial data latch pulse signal input from the mechanism controller I Serial data transfer clock signal input from the mechanism controller O Internal status (SENSE) signal output to the mechanism controller I SENSE serial data reading clock signal input from the mechanism controller I/O Input/output terminal for anti-shock Not used O Write frame clock signal output to the DVD decoder O RFCK signal output terminal Not used O XPCK signal output terminal Not used O Guard frame sync signal output to the mechanism controller O C2 pointer signal output to the DVD decoder O Subcode sync (S0+S1) detection signal output to the DVD decoder and mechanism controller O 4.2336 MHz clock signal output terminal Not used O Guard subcode sync (S0+S1) detection signal output to the DVD decoder - Ground terminal (digital system) O Numbers of track counted signal output to the mechanism controller O Mirror signal output to the mechanism controller I/O Defect signal input/output terminal Not used O Focus OK signal output to the mechanism controller I Spindle motor external control signal input terminal Not used O GFS is sampled by 460 Hz "H" output when GFS is "H" O Spindle motor servo drive signal output to the DVD decoder I Detection signal input from limit in switch The optical pick-up is inner position when "H" O 2/3 divider output terminal Not used - Power supply terminal (+3.3V) (digital system) O Sled servo drive PWM signal (+) output O Sled servo drive PWM signal (-) output O Tracking servo drive PWM signal (+) output O Tracking servo drive PWM signal (-) output O Focus servo drive PWM signal (+) output O Focus servo drive PWM signal (-) output - Ground terminal (digital system) I Input terminal for the test I Input terminal for the test I Middle point voltage (+1.65V) input terminal I Focus error signal input from the DVD/CD RF amplifier I Sled error signal input from the DVD/CD RF amplifier I Tracking error signal input from the DVD/CD RF amplifier I Middle point servo analog signal input I RF signal input from the DVD/CD RF amplifier O Output terminal for the test Not used - Ground terminal (analog system) I Stabilized current input for operational amplifiers 90

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90
HCD-C770/C990
•
DVD BOARD
IC401
CXD3068Q (DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR)
Pin No.
Pin Name
I/O
Description
1
DVDD0
—
Power supply terminal (+3.3V) (digital system)
2
XRST
I
Reset signal input from the mechanism controller
“L”: reset
3
MUTE
I
Muting on/off control signal input from the mechanism controller
“H”: muting on
4
DATA
I
Serial data input from the mechanism controller
5
XLAT
I
Serial data latch pulse signal input from the mechanism controller
6
CLOK
I
Serial data transfer clock signal input from the mechanism controller
7
SENS
O
Internal status (SENSE) signal output to the mechanism controller
8
SCLK
I
SENSE serial data reading clock signal input from the mechanism controller
9
ATSK
I/O
Input/output terminal for anti-shock
Not used
10
WFCK
O
Write frame clock signal output to the DVD decoder
11
RFCK
O
RFCK signal output terminal
Not used
12
XPCK
O
XPCK signal output terminal
Not used
13
GFS
O
Guard frame sync signal output to the mechanism controller
14
C2PO
O
C2 pointer signal output to the DVD decoder
15
SCOR
O
Subcode sync (S0+S1) detection signal output to the DVD decoder and mechanism controller
16
C4M
O
4.2336 MHz clock signal output terminal
Not used
17
WDCK
O
Guard subcode sync (S0+S1) detection signal output to the DVD decoder
18
DVSS0
—
Ground terminal (digital system)
19
COUT
O
Numbers of track counted signal output to the mechanism controller
20
MIRR
O
Mirror signal output to the mechanism controller
21
DFCT
I/O
Defect signal input/output terminal
Not used
22
FOK
O
Focus OK signal output to the mechanism controller
23
PWMI
I
Spindle motor external control signal input terminal
Not used
24
LOCK
O
GFS is sampled by 460 Hz
“H” output when GFS is “H”
25
MDP
O
Spindle motor servo drive signal output to the DVD decoder
26
SSTP
I
Detection signal input from limit in switch
The optical pick-up is inner position when “H”
27
FSTO
O
2/3 divider output terminal
Not used
28
DVDD1
—
Power supply terminal (+3.3V) (digital system)
29
SFDR
O
Sled servo drive PWM signal (+) output
30
SRDR
O
Sled servo drive PWM signal (–) output
31
TFDR
O
Tracking servo drive PWM signal (+) output
32
TRDR
O
Tracking servo drive PWM signal (–) output
33
FFDR
O
Focus servo drive PWM signal (+) output
34
FRDR
O
Focus servo drive PWM signal (–) output
35
DVSS1
—
Ground terminal (digital system)
36
TEST
I
Input terminal for the test
37
TES1
I
Input terminal for the test
38
VC
I
Middle point voltage (+1.65V) input terminal
39
FE
I
Focus error signal input from the DVD/CD RF amplifier
40
SE
I
Sled error signal input from the DVD/CD RF amplifier
41
TE
I
Tracking error signal input from the DVD/CD RF amplifier
42
CE
I
Middle point servo analog signal input
43
RFDC
I
RF signal input from the DVD/CD RF amplifier
44
ADIO
O
Output terminal for the test
Not used
45
AVSS0
—
Ground terminal (analog system)
46
IGEN
I
Stabilized current input for operational amplifiers