Sony HCD-EX100 Service Manual page 30

HCD-EX100
5-15. IC PIN FUNCTIONS
• IC303 DIGITAL SERVO & DIGITAL SIGNAL PROCESSOR (CXD2585Q) (MAIN Board (1/3))
Pin No. Pin Name I/O
DVDD I Power supply
1
XRST I System reset input "L" : reset
2
MUTE I Muting input "H" : mute
3
DATA I Serial data input, supplied from CPU
4
XLAT I Latch input, supplied from CPU
5
CLOK I Serial data transfer clock input, supplied from CPU
6
SENS O SENS signal output to CPU
7
SCLK I SENS serial data read-out clock input
8
I
9 ATSK Input pin for anti-shock (Connected to ground)
O
10 WFCK Not used
O
11 XUGF XPGF signal output (For check pin)
O
12 XPCK XPCK signal output (For check pin)
O
13 GFS GFS signal output (For check pin)
14 C2PO O C2PO signal output (For check pin)
15 SCOR O Sub-code sync output
16 CM4 O 4.2336 MHz output (Not used)
17 WDCK O Word clock output (ƒ = 2Fs) (Not used)
18 DVSS – Digital ground
19 COUT I/O Numbers of track counted signal input/output (Not used)
20 MIRR I/O Mirror signal input/output (Not used)
21 DFCT I/O Defect signal input/output (Not used)
FOK I/O Focus OK input/output (Not used)
22
PWMI I Spindle motor external control input (Connected to ground)
23
LOCK I/O GFS is sampled by 460 Hz. H when GFS is H (Not used)
24
MDP O Output to control spindle motor servo
25
SSTP I Input signal to detect disc inner most track
26
FSTO O 2/3 divider output (Not used)
27
DVDD1 I Power supply
28
SFDR O Sled drive output
29
SRDR O Sled drive output
30
O Tracking drive output
31 TFDR
O
32 TRDR Tracking drive output
O
33 FFDR Focus drive output
O
34 FRDR Focus drive output
35 DVSS1 – Digital ground
36 TEST I TEST pin connected normally to ground
37 TES1 I TEST pin connected normally to ground
38 VC I Center voltage input
39 FE I Focus error signal input
40 SE I Sled error signal input
• Abbreviation
GFS : Guarded Frame Sync
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Function
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Pin No. Pin Name
41 TE
42 CE
43 RFDC
44 ADIO
45 AVSS0
46 IGEN
47 AVDD0
48 ASYO
49 ASYI
50 RFAC
51 AVSS1
52 CLTV
53 FILO
54 FILI
55 PCO
56
AVDD1
57
BIAS
58
VCTL
59
V16M
60
VPCO
61
DVDD2
62 ASYE
63 MD2
64 DOUT
65 LRCK
66 PCMD
67 BCLK
68 EMPH
69 XTSL
70 DVSS2
71 XTAI
72 XTAO
73 SOUT
74 SOCK
75 XOLT
76 SQSO
77
SQCK
78
SCSY
79
SBSO
80
EXCK
• Abbreviation
EFM : Eight to Fourteen Modulation
PLL : Phase Locked Loop
30 30
I/O Function
I Tracking error signal input
I Center servo analog input (Connected to ground)
I RF signal input
O Not used
– Analog ground
I Stabilized current input for operational amplifiers
I Power supply
O EFM full swing output
I Asymmetry comparate voltage input
I EFM signal input
– Analog ground
I Control voltage input for master VCO1
O Filter output for master PLL
I Filter input for master PLL
O Charge-pump output for master PLL
I Power supply
I Asymmetry circuit constant current input
I VCO2 control voltage input (Connected to VDD)
I/O Not used
O Not used
I Power supply
I Asymmetry circuit ON/OFF input "L" OFF, "H" : ON (Connected to VDD)
I Digital-out ON/OFF control input (Connected to VDD)
O Digital-out output pin
O D/A interface LR clock output (ƒ = Fs)
O D/A interface serial data output
O D/A interface bit clock output
O Playback disc output in emphasis mode (Not used)
I X'tal selection input (Connected to ground)
– Digital ground
I X'tal oscillator circuit input
O X'tal oscillator circuit output (Not used)
O Serial data output in servo block (Not used)
O Serial data read clock output in servo block (Not used)
O Serial data latch output in servo block (Not used)
O Sub-Q 80-bit and PCM peak level data output (CD text data output)
I Clock input for SQSO read-out
I Connected to ground
O Sub-P through Sub-W serial output (Not used)
I Clock input for SBSO read-out (Connected to ground)