JVC KD-S641, Service Manual

Page: 39 / 42

KD-S641
(No.49769)1-39
• Pin function
Pin No. Symbol I/O Function
1 BCLK O Not used
2 LRCK O Not used
3 SRDATA O Not used
4 DVDD1 - Power supply (Digital)
5 DVSS1 - Connected to GND
6 TX O Not used
7 MCLK I CPU command clock signal input(Data is
latched at signal's rising point)
8 MDATA I CPU command data input
9 MLD I CPU command load signal input
10 SENSE O Sense signal output
11 FLOCK O Focus lock signal output Active: Low
12 TLOCK O Tracking lock signal output Active: Low
13 BLKCK O sub-code/block/clock signal output
14 SQCK I Outside clock for sub-code Q resister in-
put
15 SUBQ O Sub-code Q -code output
16 DMUTE Connected to GND
17 STAT O Status signal(CRC,CUE,CLVS,
TTSTOP,ECLV,SQOK)
18 RST I Reset signal input (L:Reset)
19 SMCK - Not used
20 PMCK - Not used
21 TRV O Traverse enforced output
22 TVD O Traverse drive output
23 PC - Not used
24 ECM O Spindle motor drive signal (Enforced
mode output) 3-State
25 ECS O Spindle motor drive signal (Servo error
signal output)
26 KICK O Kick pulse output
27 TRD O Tracking drive output
28 FOD O Focus drive output
29 VREF - Reference voltage input pin for D/A out-
put block (TVD,FOD,FBA,TBAL)
30 FBAL O Focus Balance adjust signal output
31 TBAL O Tracking Balance adjust signal output
32 FE I Focus error signal input (Analog input)
33 TE I Tracking error signal input (Analog input)
34 RF ENV I RF envelope signal input (Analog input)
35 VDET I Vibration detect signal input (H:detect)
36 OFT I Off track signal input (H:off track)
37 TRCRS I Track cross signal input
38 RFDET I RF detect signal input (L:detect)
39 BDO I BDO input pin (L:detect)
40 LDON O Laser ON signal output (H:on)
41 PLLF2 - Not used
42 TOFS O Tracking error shunt signal output
(H:shunt)
43 WVEL - Not used
44 ARF I RF signal input
45 IREF I Reference current input pin
46 DRF I Bias pin for DSL
47 DSLF I/O Loop filter pin for DSL
48 PLLF I/O Loop filter pin for PLL
49 VCOF - Not used
50 AVDD2 - Power supply (Analog)
51 AVSS2 - Connected to GND (Analog)
52 EFM - Not used
53 PCK - Not used
54 VCOF2 - PLL data slice output
55 SUBC - Not used
56 SBCK - Not used
57 VSS - Connected to GND (for X'tal oscillation
circuit)
58 XI I Input of 16.9344MHz X'tal oscillation cir-
cuit
59 X2 O Output of X'tal oscillation circuit
60 VDD - Power supply (for X'tal oscillation circuit)
61 BYTCK - Not used
62 CLDCK - Not used
63 FCLK - Not used
64 IPFLAG - Not used
65 FLAG - Not used
66 CLVS - Not used
67 CRC - Not used
68 DEMPH - Not used
69 RESY - Not used
70 IOSEL - pull up
71 TEST - pull up
72 AVDD1 - Power supply (Digital)
73 OUT L O Lch audio output
74 AVSS1 - Connected to GND
75 OUT R O Rch audio output
76 RSEL - pull up
77 CSEL - Connected to GND
78 PSEL - Connected to GND
79 MSEL - Connected to GND
80 SSEL - Pull up
Pin No. Symbol I/O Function