CXD2529Q
CD Digital Signal Processor
For the availability of this product, please contact the sales office.
Description
The CXD2529Q is a digital signal processor LSI for
CD players and is equipped with built-in digital filters,
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
– Allows 0.5 to double-speed continuous playback
– Allows relative rotational velocity readout
– Supports external spindle control
•
Wide capture range mode
– Spindle rotational velocity following method
– Supports normal-speed and double-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 compensation circuit
•
Serial bus-based CPU interface
•
Error correction monitor signals, etc. are output
from a new CPU interface.
•
Servo auto sequencer
•
Digital audio interface output
•
Digital peak meter
Digital Filter, DAC, Analog Low-Pass Filter Block
•
DBB (Digital Bass Boost)
•
Supports double-speed playback
•
Digital de-emphasis
•
Digital attenuation function
•
Zero detection function
•
8fs oversampling digital filter
•
S/N ratio: 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 more
Applications
CD players
Structure
Silicon gate CMOS IC
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.
100 pin QFP (Plastic)
Absolute Maximum Ratings
–0.3 to +7.0
V
•
Supply voltage
V
DD
•
Input voltage
V
I
–0.3 to +7.0
V
(Vss – 0.3V to V
DD
+ 0.3V)
•
Output voltage
V
O
–0.3 to +7.0
V
•
Storage temperature Tstg
–40 to +125
°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
3.4 to 5.25
V
•
Operating temperature Topr
–20 to +75
°C
Note)
The V
DD
(min.) for the CXD2519Q varies
according to the playback speed selection.
Playback
speed
×
2
×
1
×
1
∗1
V
DD
(min.) [V]
CD-DSP block
3.4V
3.4V
3.4V
DAC block
4.5V
3.4V
∗
1
When the internal operation of the CD-DSP
side is set to double-speed mode and the
crystal oscillation frequency is halved,
normal-speed playback results.
Input/Output Capacitances
•
Input pin
C
I
•
Output pin
C
O
Note)
Measurement conditions
12 (max.)
pF
12 (max.)
pF
V
DD
= V
I
= 0V
f
M
= 1MHz
–1–
E96651A73
SONY [ SONY CORPORATION ]
