JVC NX-MD1R Service Manual page 62

NX-MD1R/NX-MD1
MN662790RSC (IC651) : Digital servo & digital signal prossesor
1.Terminal layout
2. Pin function
Pin
No. Symbol I/O
1 BCLK O Bit clock output for SRDATA
2 LRCK O LR signal separation output
3 SRDATA O Serial data output
4 DVDD1 - Power supply for digital circuit
5 DVSS1 - GND for digital circuit
6 TX O Digital audio ineterface output
7 MCLK I Micro computer command clock signal input
8 MDATA I Micro computer command data input
9 MLD I Micro computer command load signal input (L:Load)
10 SENSE - Not use
11 FLOCK - Not use
12 TLOCK - Not use
13 BLKCK O Sub code block signal output
14 SQCK I External clock input for sub code Q register input
15 SUBQ O Sub code Qdata output
16 DMUTE I Muting input (H:Mute)
17 STAT O Status signal input
18 DSP-RST I Reset signal input (L:Reset)
19 SMCK - Not use
20 CSEL I
21 TEST2 - Not use
22 TVD O Traverse drive output
23 PC - Not use
24 ECM O Spindle motor drive signal (Enforced mode output)
25 ECS O Spindle motor drive signal (Servo error signal output)
26 VDETMON - Not use
27 TRD O Tracking drive output
28 FOD O Focus drive output
29 VREF I Reference voltage for D/A output block
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 TEST3 I Connect to GND
36 OFT I Off track signal input (H:Off track)
37 TRCRS I Track crosssignal input
38 RFDET I RF detect signal input (L:Detect)
39 BDO I Drop out signal input (H:Drop out)
40 LDON - Not use
1-62
20 1
21
80
40
61
41 60
Pin
Function No. Symbol
I/O
41 PLLF2
42 DSLBDA - Not use
43 WVEL - Not use
44 ARF I RF signal input
45 IREF I Referrence current input
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 I/O Loop filter pin for VCO
50 AVDD2 - Power supply for analog circuit
51 AVSS2 - GND for analog circuit
52 EFM - Not use
53 DSLB O DSL balance output
54 VCOF2 I/O Loop filter pin for Digtal servo VCO
55 SUBC - Not use
56 SBCK - Not use
57 VSS - GND for crystal oscillation circuit
58 X1 I Input for crystal oscillation circuit (f=16.9344MHz)
59 X2 O Output for crystal oscillation circuit (f=16.9344MHz)
60 VDD - Power supply for crystal oscillation circuit
61 BYTCK - Not use
62 LD
63 GAIN
64 IPFLAG - Not use
65 FLAG O Flag signal output
66 CLVS - Not use
67 CRC - Not use
68 DEMPH - Not use
69 RESY - Not use
70 IOSEL I Mode select pin , Connect to DVDD1 (H fix)
71 TEST I Test pin ,Connect to DVDD1 (H fix)
72 AVDD1 - Power supply for analog circuit
73 OUTL O L-channel audio output
74 AVSS1 - GND for analog circuit
75 OUTR O R-channel audio output
76 DQSY
77 Vcc5V - Connect to power supply
78 PSEL I IOSEL=H , Test pin , Connect to GND ( L fix)
79 MSEL - IOSEL=H , SMCK output , Frequency select pin
80 SSEL I IOSEL=H , SMCK output , SUBQ output mode select pin
Function