參數(shù)資料
型號(hào)： CXD2597Q
廠商： Sony Corporation
元件分類： 數(shù)字信號(hào)處理
英文描述： CD Digital Signal Processor with Built-in Digital Servo and DAC
中文描述： CD數(shù)字信號(hào)處理器，具有內(nèi)置數(shù)字伺服和DAC
文件頁(yè)數(shù)： 1/115頁(yè)
文件大?。?/td> 881K
代理商： CXD2597Q
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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
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 normal-speed to 4
×
speed playback
16K RAM
EFM data demodulation
Enhanced EFM frame sync signal protection
SEC strategy-based error correction
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
Digital audio interface outputs
Digital level meter, peak meter
CD TEXT data demodulation
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 functions
Digital Filter, DAC and Analog Low-Pass Filter Blocks
DBB (digital bass boost) function
Double-speed playback supported
Digital de-emphasis
Digital attenuation
Zero detection function
8Fs oversampling digital filter
S/N: 100dB or more (master clock: 384Fs, typ.)
Logical value: 109dB
THD + N: 0.007% or less (master clock: 384Fs, typ.)
Rejection band attenuation: –60dB or less
Applications
CD players
Structure
Silicon gate CMOS IC
Absolute Maximum Ratings
Supply voltage
Input voltage
V
DD
V
I
–0.3 to +7.0
–0.3 to +7.0
V
V
(V
SS
– 0.3V to V
DD
+ 0.3)
–0.3 to +7.0
–40 to +125
Output voltage
Storage temperature Tstg
Supply voltage difference
V
O
V
°C
V
SS
– AV
SS
–0.3 to +0.3
V
DD
– AV
DD
–0.3 to +0.3
V
V
Note)
AV
DD
includes XV
DD
and AV
SS
includes XV
SS
.
Recommended Operating Conditions
Supply voltage
Operating temperature
Topr
Note)
The V
DD
for the CXD2597Q varies according to
the playback speed selection.
V
DD
+2.7 to +5.5
–20 to +75
V
°C
– 1 –
CXD2597Q
E97Z35-PS
CD Digital Signal Processor with Built-in Digital Servo and DAC
For the availability of this product, please contact the sales office.
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.
Playback
speed
CD-DSP block
DAC block
4
×
4.75 to 5.25
2
×
1
×
3.0 to 5.5
4.5 to 5.5
2.7 to 5.5
2.7 to 5.5
V
DD
[V]
I/O Capacitance
Input capacitance
Output capacitance C
O
I/O capacitance
C
I
11 (Max.)
11 (Max.)
11 (Max.)
pF
pF
pF
C
I/O
Note)
Measurement conditions V
DD
= V
I
= 0V
f
M
= 1MHz
80 pin QFP (Plastic)
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