Sony CDP-CX400; CDP-CX450 Service Manual page 38

7-17. IC PIN FUNCTIONS
• IC101 DIGITAL SIGNAL PROCESSOR (CXD2587Q)
Pin Name
Pin No.
1 SQSO
2 SQCK
3 XRST
4 SYSM
5 DATA
6 XLAT
7 CLOK
8 SENS
9 SCLK
10 VDD
11 ATSK
12 SPOA
13 SPOB
14 XLON
15 WFCK
16 XUGF
17 XPCK
18 GFS
19 C2PO
20 SCOR
21 COUT
22 MIRR
23 DFCT
24 FOK
25 LOCK
26 MDP
27 SSTP
28 SFDR
29 SRDR
30 TFDR
31 TRDR
32 FFDR
33 FRDR
34 VSS
35 TEST
36 TES1
37 XTSL
38 VC
39 FE
40 SE
• Abbreviation
GFS : Guarded Frame Sync
38
(BD board)
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
Function