JVC NX-MD1R Service Manual page 50

NX-MD1R/NX-MD1
Symbol
I/O
Pin No.
44
XCAS O External DRAM CAS output.
45 A09 O
External DRAM address output.
46
XRAS O External DRAM RAS output.
47 XWE O
External DRAM write enable.
48 D1 I/O
External DRAM data bus.
49
D0 I/O External DRAM data bus.
50 D2 I/O
External DRAM data bus.
51
D3 I/O External DRAM data bus.
52 MDDTI I
MD-DATA mode 1 switching input. (Low : normal mode ; high : MD-DATA mode 1)
53
ASYO O
Playback EFM full-swing input. (Low : vss ; high : Vdd)
54
ASYI I Playback EFM comparator slice voltage input.
55 AVDD -
Analog power supply.
56
BIAS I Playback EFM comparator bias current input.
57 RFI I
Playback EFM RE signal input.
58
AVSS - Analog ground.
59
PCO O Phase comparison output for master PLL of playback digital PLL and recording
EFM PLL.
60
FILI I Filter input for master PLL of playback digital PLL and recording EFM PLL.
61 FILO O
Filter output for master PLL of playback digital PLL and recording EFM PLL.
62
CLTV I Internal VCO control voltage input for master PLL of playback digital EFM PLL and
recording EFM PLL.
63 PEAK I
Peak hold signal input for quantity of light.
64
BOTM I Bottom hold signal input for quantity of light.
65 ABCD I
Signal input for quantity of light.
66
FE I Focus error signal input.
67 AUXI I
Auxillary input 1.
68 VC I
Center voltage input.
69
ADIO I Monitor output for A / D converter input signal.
70 AVDD -
Analog power supply.
71
ADRT I Voltage input for the upper limit of the A / D converter operating range.
72 ADRB I
Voltage input for the lower limit of the A / D converter operating range.
73
AVSS -
Analog ground.
74
SE I Sled error signal input.
75 TE I
Tracking error signal input.
76
DCHG I Connect to he low-inpedance power supply.
77 APC I
Error signal input for laser digital APC.
78
ADFG I ADIP binary FM signal (22.05
79
F0CNT O CXA2523 current source setting output.
80 XLRF O
CXA2523 control latch output. Latched at the falling edge.
81
CKRF O CXA2523 control shift clock output.
82 DTRF O
CXA2523 control data output.
83
APCREF O Reference PWM output for laser APC.
84
LDDR O PWM output for laser digital APC.
85 TRDR O
Tracking servo drive PWM output. ( )
86
TFDR O Tracking servo drive PWM output. (+)
87 DVDD -
Digital power supply.
88
FFDR O Focus servo drive PWM output. (+)
89 FRDR O
Focus servo drive PWM output. ( )
90 FS4 O
4Fs output. (176.4kHz)
1-50
Function
1kHz) input.