JVC CA-UXP55, Service Manual

Page: 35 / 42

(No.22036)1-35
• 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 Digital audio interface output
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
input
15 SUBQ O Sub-code Q -code output
16 DMUTE Connected to GND
17 STATUS O "Status signal
(CRC,CUE,CLVS,TTSTOP,ECLV,EC
LV,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 er-
ror signal output)"
26 KICK O Kick pulse output
27 TRD O Tracking drive output
28 FOD O Focus drive output
29 VREF I "Reference voltage input pin for D/A
output 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 in-
put)
33 TE I Tracking error signal input (Analog in-
put)
34 RF ENV I RF envelope signal input (Analog in-
put)
35 VDET I Vibration detect signal input (H:de-
tect)
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 I Laser ON signal output (H:on)
42 TES O Tracking error shunt signal output
(H:shunt)
41 PLAY - Not used
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 PDO - Not used
55 SUBC - Not used
56 SBCK - Not used
57 VSS - "Connected to GND (for X'tal oscilla-
tion circuit)"
58 XI I Input of 16.9344MHz X'tal oscillation
circuit
59 X2 O Output of X'tal oscillation circuit
60 VDD - Power supply (for X'tal oscillation cir-
cuit)
61 BYTCK - Not used
62 CLDCK - Not used
63 FLAG - Not used
64 IPPLAG - 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