Ic Pin Function Description - Sony SCD-XB770 Service Manual

4-18. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC509 CXD3068Q (DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR)
Pin No. Pin Name
1 DVDD0
2 XRST
3 MUTE
4 DATA
5 XLAT
6 CLOK
7 SENS
8 SCLK
9 ATSK
10 WFCK
11 RFCK
12 XPCK
13 GFS
14 C2PO
15 SCOR
16 C4M
17 WDCK
18 DVSS0
19 COUT
20 MIRR
21 DFCT
22 FOK
23 PWMI
24 LOCK
25 MDP
26 SSTP
27 FSTO
28 DVDD1
29 SFDR
30 SRDR
31 TFDR
32 TRDR
33 FFDR
34 FRDR
35 DVSS1
36 TEST
37 TES1
38 VC
39 FE
40 SE
41 TE
42 CE
43 RFDC
44 ADIO
I/O
—
Power supply terminal (+3.3V) (digital system)
I Reset signal input from the I/O expander (IC902) "L": reset
I
Muting on/off control signal input from the I/O expander (IC902) "H": muting on
I
Serial data input from the CPU (IC901)
I
Serial data latch pulse signal input from the CPU (IC901)
I
Serial data transfer clock signal input from the CPU (IC901)
O
Internal status (SENSE) signal output to the CPU (IC901)
I
SENSE serial data reading clock signal input from the CPU (IC901)
I/O
Input/output terminal for anti-shock Not used (pull down)
O
Write frame clock signal output to the CXD1882R (IC701)
O RFCK signal output terminal Not used (open)
O
XPCK signal output terminal Not used (open)
O Guard frame sync signal output to the CPU (IC901)
O
C2 pointer signal output to the CXD1882R (IC701)
O
Subcode sync (S0+S1) detection signal output to the CXD1882R (IC701) and CPU (IC901)
O
4.2336 MHz clock signal output terminal Not used (open)
O
Guard subcode sync (S0+S1) detection signal output to the CXD1882R (IC701)
—
Ground terminal (digital system)
O
Numbers of track counted signal output to the CPU (IC901)
O
Mirror signal output to the CPU (IC901)
I/O
Defect signal input/output terminal Not used (pull up)
O Focus OK signal output to the CPU (IC901)
I
Spindle motor external control signal input terminal Not used (fixed at "L")
O GFS is sampled by 460 Hz "H" output when GFS is "H"
O
Spindle motor (M3) servo drive signal output to the CXD1882R (IC701)
Detection signal input from limit in switch (S1)
I
The optical pick-up is inner position when "H"
O 2/3 divider output terminal Not used (open)
—
Power supply terminal (+3.3V) (digital system)
O
Sled servo drive PWM signal (+) output to the BA5938FP (IC502)
O
Sled servo drive PWM signal (–) output to the BA5938FP (IC502)
O
Tracking servo drive PWM signal (+) output to the BA5938FP (IC502)
O
Tracking servo drive PWM signal (–) output to the BA5938FP (IC502)
O
Focus servo drive PWM signal (+) output to the BA5938FP (IC502)
O Focus servo drive PWM signal (–) output to the BA5938FP (IC502)
—
Ground terminal (digital system)
I Input terminal for the test (fixed at "L")
I
Input terminal for the test (fixed at "L")
I
Middle point voltage (+1.65V) input from the NJM3403AV (IC004)
I
Focus error signal input from the CXD1881R (IC001)
I
Sled error signal input from the CXD1881R (IC001)
I
Tracking error signal input from the CXD1881R (IC001)
I
Middle point servo analog signal input from the NJM3403AV (IC004)
I
RF signal input from the CXD1881R (IC001)
O
Output terminal for the test Not used (open)
Description
SCD-XB770
37