CD Digital Signal Processor with Built-in Digital Servo
Preliminary
Description
The CXD3068Q is a digital signal processor LSI for
CD players. This LSI incorporates a digital servo.
Features
• All digital signal processings during playback are
performed with a single chip
• Highly integrated mounting possible due to a built-
in RAM
Digital Signal Processor (DSP) Block
• Playback mode supporting CAV (Constant Angular
Velocity)
• Frame jitter free
• 0.5
×
to 4
×
continuous playback possible
• Allows relative rotational velocity readout
• Wide capture range playback mode
• Spindle rotational velocity following method
• Supports 1
×
to 4
×
playback variable pitch
playback
• Bit clock, which strobes the EFM signal, is
generated by the digital PLL.
• EFM data demodulation
• Enhanced EFM frame sync signal protection
• Refined super strategy-based powerful error
correction
C1: double correction, C2: quadruple correction
Supported during 4
×
playback
• Noise reduction during track jumps
• Auto zero-cross mute
• Subcode demodulation and Sub-Q data error
detection
• Digital spindle servo
• 16-bit traverse counter
• Asymmetry correction circuit
• CPU interface on serial bus
• Error correction monitor signal, etc. output from a
new CPU interface
• Servo auto sequencer
• Fine search performs track jumps with high
accuracy
• Digital audio interface output
• Digital level meter, peak meter
• Bilingual supported
• VCO control mode
• CD TEXT data demodulation
• EFM playability reinforcement function
Digital Servo (DSSP) Block
• Microcomputer software-based flexible servo control
• Offset cancel function for servo error signal
• Auto gain control function for servo loop
• E:F balance, focus bias adjustment function
• Surf jump function supporting micro two-axis
• Tracking filter: 6 stages
Focus filter: 5 stages
– 68 –
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
CXD3068Q
80 pin QFP (Plastic)
Structure
Silicon gate CMOS IC
Absolute Maximum Ratings
• Supply voltage
V
DD
–0.5 to +4.6
V
• Input voltage
V
I
–0.5 to +4.6
V
(V
SS
– 0.5V to V
DD
+ 0.5V)
• Output voltage
V
O
–0.5 to +4.6
V
(V
SS
– 0.5V to V
DD
+ 0.5V)
• Storage temperature Tstg
–55 to +150
°C
• Supply voltage difference
V
SS
– AV
SS
–0.3 to +0.3
V
V
DD
– AV
DD
–0.3 to +0.3
V
Note) AV
DD
includes XV
DD
and AV
SS
includes XV
SS
.
Recommended Operating Conditions
• Supply voltage
V
DD
2.7 to 3.6
V
• Operating temperature
Topr
–20 to +75
°C
I/O Capacitance
• Input pin
C
I
9 (Max.)
pF
• Output pin
C
O
11 (Max.)
pF
• I/O pin
C
I/O
11 (Max.)
pF
Note) Measurement conditions V
DD
= V
I
= 0V
f
M
= 1MHz
Summary of Contents for PV420S
Page 1: ...SERVICE MANUAL PV420S WWW BBK RU ...
Page 72: ... 69 CXD3068Q Block Diagram ...
Page 73: ... 70 CXD3068Q Pin Configuration ...
Page 122: ... 119 CXD3068Q Timing Chart 1 3 ...
Page 123: ... 120 CXD3068Q Timing Chart 1 4 ...
Page 124: ... 121 CXD3068Q Timing Chart 1 5 ...
Page 129: ... 126 CXD3068Q Timing Chart 2 1 ...
Page 130: ... 127 CXD3068Q Block Diagram 2 2 ...
Page 131: ... 128 CXD3068Q Timing Chart 2 3 ...
Page 134: ... 131 CXD3068Q Timing Chart 2 6 ...
Page 138: ... 135 CXD3068Q VCO C Mode Fig 3 3 Access Flow Chart Using VCO Control ...
Page 140: ... 137 CXD3068Q Block Diagram 4 1 ...
Page 143: ... 140 CXD3068Q Timing Chart 4 4 ...
Page 147: ... 144 CXD3068Q Fig 4 6 a Auto Focus Flow Chart Fig 4 6 b Auto Focus Timing Chart ...
Page 148: ... 145 CXD3068Q Fig 4 7 a 1 Track Jump Flow Chart Fig 4 7 b 1 Track Jump Timing Chart ...
Page 149: ... 146 CXD3068Q Fig 4 8 a 10 Track Jump Flow Chart Fig 4 8 b 10 Track Jump Timing Chart ...
Page 150: ... 147 CXD3068Q Fig 4 9 a 2N Track Jump Flow Chart Fig 4 9 b 2N Track Jump Timing Chart ...
Page 151: ... 148 CXD3068Q Fig 4 10 a Fine Search Flow Chart Fig 4 10 b Fine Search Timing Chart ...
Page 152: ... 149 CXD3068Q Fig 4 11 a M Track Move Flow Chart Fig 4 11 b M Track Move Timing Chart ...
Page 157: ... 154 CXD3068Q Fig 4 15 CD TEXT Data Timing Chart ...
Page 162: ... 159 CXD3068Q Fig 5 3a Fig 5 3b ...
Page 196: ... 193 CXD3068Q Description of Data Readout ...
Page 200: ... 197 CXD3068Q ...
Page 201: ... 198 CXD3068Q ...
Page 202: ... 199 CXD3068Q ...
Page 207: ... 204 CXD3068Q Package Outline Unit mm ...
Page 208: ...This data sheet has been made from recycled paper to help protect the environment 205 ...