Ic Pin Function Description - Sony CFD-V27 Service Manual

2-5. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC702 CXD2587Q CD DIGITAL SIGNAL PROCESSOR
Pin No. Pin Name
1 SQSO
2 SQCK
3 XRST
4 SYSM
5 DATA
6 XLAT
7 CLK
8 SENS
9 SCLK
10 V
DD
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 V
SS
35 TEST
36 TES1
37 XTSL
38 VC
39 FE
40 SE
41 TE
42 CE
43 RFDC
44 ADIO
45 AV
SS
I/O
O SubQ 80 bit and PCM peak, level data output. CD TEXT data output
I Clock input for SQSO read out
I System reset Resets at "L"
I Mute input Mutes at "H"
I Serial data input from CPU
I Latch input from CPU Latches the serial data by trailing
I Serial data transfer clock input from the CPU
O SENS output. Outputs to the CPU
I Clock input for SENS serial data reading
— Digital power supply
I/O Input/output for anti-shock (Not used)
I Micro processing extension interface (input A)
I Micro processing extension interface (input B)
O Micro processing extension interface (output) "H" when resetting
O WFCK output (Not used)
O XUGF output. MNT1, RFCK output by switching of command (Not used)
O XPCK output. MNT0 output by switching of command (Not used)
O GFS output. MNT3, XROF output by switching of command (Not used)
O C2PO output. GTOP output by switching of command (Not used)
O "H" output when the sub-code sync S0 or S1 is detected
I/O Truck number counting signal input/output
I/O Mirror signal input/output
I/O Defect signal input/output
I/O Focus OK signal input/output
Samples the GFS at 460 Hz. "H" output when the GFS is "H". "L" output when the GFS is "L"
I/O
continuously three times
O Or, input when LKIN = "1". Servo control output of spindle motor
I Disc innermost circumference detection signal input
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 GND
I Terminal for TEST Normally GND
I Terminal for TEST Normally GND
I X'tal selection input terminal "L" when X'tal is 16.9344 MHz. "H" when X`tal is 33.8688 MHz
I Center point voltage input
I Focus error signal input
I Sled error signal input
I Tracking error input
I Center point servo analog input
I RF signal input
O Terminal for TEST Do not connect anything (Not used)
— Analog ground
Description
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