Sony HCD-C770 Service Manual page 88

HCD-C770/C990
QQ
3 7 63 1515 0
• DVD BOARD IC401 CXD3068Q (DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR)
Pin No. Pin Name
1 DVDD0
2 XRST
3 MUTE
4 DATA
5 XLAT
6 CLOK
7 SENS
8 SCLK
9 ATSK
10 WFCK
11 RFCK
12 XPCK
13 GFS
14 C2PO
15 SCOR
16 C4M
17 WDCK
18 DVSS0
19 COUT
20 MIRR
TE
L 13942296513
21 DFCT
22 FOK
23 PWMI
24 LOCK
25 MDP
26 SSTP
27 FSTO
28 DVDD1
29 SFDR
30 SRDR
31 TFDR
32 TRDR
33 FFDR
34 FRDR
35 DVSS1
36 TEST
37 TES1
38 VC
39 FE
40 SE
41 TE
www
42 CE
43 RFDC
44 ADIO
.
45 AVSS0
46 IGEN
88
http://www.xiaoyu163.com
I/O
— Power supply terminal (+3.3V) (digital system)
I
Reset signal input from the mechanism controller
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
x ao
I
RF signal input from the DVD/CD RF amplifier
y
O
Output terminal for the test Not used
i
—
Ground terminal (analog system)
I Stabilized current input for operational amplifiers
http://www.xiaoyu163.com
8
Description
"L": reset
Q Q
3 6 7 1 3
u163
.
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
m
co
9 9
2 8 9 9