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CXD2597Q Datasheet

  • CXD2597Q

  • CD Digital Signal Processor with Built-in Digital Servo and ...

  • 115頁(yè)

  • SONY   SONY

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CXD2597Q
CD Digital Signal Processor with Built-in Digital Servo and DAC
For the availability of this product, please contact the sales office.
Description
The CXD2597Q is a digital signal processor LSI for
CD players. This LSI incorporates a digital servo,
digital filter, zero detection circuit, 1-bit DAC and
analog low-pass filter on a single chip.
Features
Digital Signal Processor (DSP) Block
鈥?/div>
Playback mode supporting CAV (Constant Angular
Velocity)
鈥?/div>
Frame jitter free
鈥?/div>
0.5脳 to 4脳 continuous playback possible
鈥?/div>
Allows relative rotational velocity readout
鈥?Wide capture range playback mode
鈥?/div>
Spindle rotational velocity following method
鈥?/div>
Supports normal-speed to 4脳 speed playback
鈥?/div>
16K RAM
鈥?/div>
EFM data demodulation
鈥?/div>
Enhanced EFM frame sync signal protection
鈥?/div>
SEC strategy-based error correction
鈥?/div>
Subcode demodulation and Sub Q data error
detection
鈥?/div>
Digital spindle servo
鈥?/div>
16-bit traverse counter
鈥?/div>
Asymmetry correction circuit
鈥?/div>
CPU interface on serial bus
鈥?/div>
Error correction monitor signal, etc. output from a
new CPU interface
鈥?/div>
Servo auto sequencer
鈥?/div>
Digital audio interface outputs
鈥?/div>
Digital level meter, peak meter
鈥?/div>
CD TEXT data demodulation
Digital Servo (DSSP) Block
鈥?/div>
Microcomputer software-based flexible servo control
鈥?/div>
Offset cancel function for servo error signal
鈥?/div>
Auto gain control function for servo loop
鈥?/div>
E:F balance, focus bias adjustment functions
Digital Filter, DAC and Analog Low-Pass Filter Blocks
鈥?/div>
DBB (digital bass boost) function
鈥?/div>
Double-speed playback supported
鈥?/div>
Digital de-emphasis
鈥?/div>
Digital attenuation
鈥?/div>
Zero detection function
鈥?/div>
8Fs oversampling digital filter
鈥?/div>
S/N: 100dB or more (master clock: 384Fs, typ.)
Logical value: 109dB
鈥?/div>
THD + N: 0.007% or less (master clock: 384Fs, typ.)
鈥?/div>
Rejection band attenuation: 鈥?0dB or less
80 pin QFP (Plastic)
Applications
CD players
Structure
Silicon gate CMOS IC
Absolute Maximum Ratings
鈥?.3 to +7.0
V
鈥?/div>
Supply voltage
V
DD
鈥?/div>
Input voltage
V
I
鈥?.3 to +7.0
V
(V
SS
鈥?0.3V to V
DD
+ 0.3)
鈥?/div>
Output voltage
V
O
鈥?.3 to +7.0
V
鈥?/div>
Storage temperature Tstg
鈥?0 to +125 擄C
鈥?/div>
Supply voltage difference
V
SS
鈥?AV
SS
鈥?.3 to +0.3
V
V
DD
鈥?AV
DD
鈥?.3 to +0.3
V
Note)
AV
DD
includes XV
DD
and AV
SS
includes XV
SS
.
Recommended Operating Conditions
鈥?/div>
Supply voltage
V
DD
+2.7 to +5.5
V
鈥?/div>
Operating temperature Topr
鈥?0 to +75 擄C
Note)
The V
DD
for the CXD2597Q varies according to
the playback speed selection.
Playback
speed
4脳
2脳
1脳
V
DD
[V]
CD-DSP block
4.75 to 5.25
3.0 to 5.5
2.7 to 5.5
4.5 to 5.5
2.7 to 5.5
DAC block
I/O Capacitance
鈥?/div>
Input capacitance C
I
鈥?/div>
Output capacitance C
O
鈥?/div>
I/O capacitance
C
I/O
11 (Max.)
11 (Max.)
11 (Max.)
pF
pF
pF
Note)
Measurement conditions V
DD
= V
I
= 0V
f
M
= 1MHz
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.
鈥?鈥?/div>
E97Z35-PS

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