Ic Pin Functions - Sony CDP-CX300 Service Manual

7-23. IC PIN FUNCTIONS

• IC101 DIGITAL SIGNAL PROCESSOR (CXD2587Q) (BD board)
Pin Name
Pin No.
SQSO
1
SQCK
2
XRST
3
SYSM
4
DATA
5
XLAT
6
CLOK
7
SENS
8
SCLK
9
VDD
10
ATSK
11
SPOA
12
SPOB
13
XLON
14
WFCK
15
XUGF
16
XPCK
17
GFS
18
19 C2PO
SCOR
20
COUT
21
MIRR
22
DFCT
23
FOK
24
LOCK
25
MDP
26
SSTP
27
28 SFDR
SRDR
29
TFDR
30
TRDR
31
FFDR
32
FRDR
33
VSS
34
TEST
35
TES1
36
XTSL
37
VC
38
FE
39
SE
40
• Abbreviation
GFS : Guarded Frame Sync
I/O
O Sub-Q 80-bit and PCM peak level data output (CD text data output)
I Clock input for SQSO read-out
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
– Digital power supply
I/O
Input pin for anti-shock (Connected to ground)
I
Microcomputer escape interface input A
I
Microcomputer escape interface input B
O
Microcomputer escape interface output
O WFCK output (Not used)
O Not used
O Not used
O Not used
O
Not used
O
Sub-code sync output
I/O
Numbers of track counted signal input/output (Not used)
I/O Mirror signal input/output (Not used)
I/O Defect signal input/output (Not used)
I/O Focus OK input/output (Not used)
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
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
X'tal selection input (Connected to ground)
I
Center voltage input pin
I Focus error signal input
I Sled error signal input
– 56 –
Function