Ic Pin Functions - Sony HCD-EX1 Service Manual

5-17. IC PIN FUNCTIONS

• IC303 DIGITAL SERVO & DIGITAL SIGNAL PROCESSOR (CXA2585Q) (MAIN Board (1/3))
Pin Name
Pin No.
DVDD
1
XRST
2
MUTE
3
DATA
4
XLAT
5
CLOK
6
SENS
7
SCLK
8
ATSK
9
WFCK
10
11 XUGF
XPCK
12
GFS
13
C2PO
14
SCOR
15
CM4
16
WDCK
17
DVSS
18
COUT
19
20 MIRR
DFCT
21
FOK
22
PWMI
23
LOCK
24
MDP
25
SSTP
26
FSTO
27
DVDD1
28
SFDR
29
SRDR
30
TFDR
31
TRDR
32
FFDR
33
FRDR
34
DVSS1
35
TEST
36
TES1
37
VC
38
FE
39
SE
40
• Abbreviation
GFS : Guarded Frame Sync
32
I/O
– Digital power supply
I System reset "L" : reset
I
Muting input "H" : mute
I
Serial data input, supplied from CPU
I
Latch input, supplied from CPU
I
Serial data transfer clock input, supplied from CPU
O SENS signal output to CPU
I SENS serial data read-out clock input
I/O Input pin for anti-shock (Connected to ground)
O WFCK output (Not used)
O
Not used
O
Not used
O
Not used
O
Not used
O Sub-code sync output
O 4.2336 MHz output (Not used)
O Word clock output (ƒ = 2Fs)
– Digital ground
I/O Numbers of track counted signal input/output (Not used)
I/O
Mirror signal input/output
I/O
Defect signal input/output
I/O Focus OK input/output
I Spindle motor external control input (Connected to ground)
I/O GFS is sampled by 460 Hz. H when GFS is H (Not used)
O Output to control spindle motor servo
I Input signal to detect disc inner most track
O 2/3 divider output of pin 71
– Digital power supply
O
Sled drive output
O
Sled drive output
O Tracking drive output
O Tracking drive output
O Focus drive output
O Focus drive output
– Digital ground
I TEST pin connected normally to ground
I
TEST pin connected normally to ground
I
Center voltage input pin
I
Focus error signal input
I Sled error signal input
Function