01W146A
Signal processor LSI with pre-servo amplifier for CD players
BU9532KS2
Description
BU9532KS2 is a digital signal processor LSI with
built-in pre-servo amplifier developed for CD players.
This built-in pre-servo amplifier is applied to the RW
functions of the compact disc. Combining ROHM's
BU24393 – a system micro controller with this new DSP
BU9532KS2 provides an extremely simplified CD system.
Dimension (Units : mm)
12.0
±
0.3
10.0
±
0.2
39
27
26
12.0
±
0.3
10.0
±
0.2
40
52
1
14
13
1.4
±
0.1
0.1
±
0.1
Features
1) Built-in pre-servo amplifier for playing CD-RW
2) Tracking, Focus automatic control
3) Symmetry correction function
4) Built-in x8 over sampling filter + 1 bit DAC
5) Digital bass boost, soft mute function
0.65
0.3
±
0.1
0.15
SQFP-T52
Applications
Portable CD players, CD radio cassette players
Absolute Maximum Ratings
(Ta=25˚C)
Parameter
Maximum applied voltage
Power dissipation
Operating temperature range
Storage temperature range
∗
Derating : 8.5mW/˚C for operation above Ta=25˚C
Symbol
Vcc
Pd
Topr
Tstg
Limits
4.5
850
∗
–25
–55
~
~
75
125
Unit
V
mW
˚C
˚C
April, 2002
0.5
0.125
±
0.1
Recommended Operating Conditions (Ta=25˚C)
Parameter
Operating power supply voltage
Symbol
V
DD
Min.
2.5
Typ.
-
Max.
3.3
Unit
V
Electrical characteristics (Unless otherwise noted;
Ta=25˚C, Vcc=3.0V)
Parameter
Circuit current
Audio-DAC distortion
Audio-DAC Dynamic range
Audio-DAC S/N rate
Servo-ADC Max. conversion voltage
Servo-ADC Min. conversion voltage
Servo-DAC Max. output voltage
Servo-DAC Min. output voltage
RF amplifier Max. output amplitude
RF amplifier Min. output amplitude
Symbol
Io
THD
DR
S/N
V
ADH
V
ADL
V
DAH
V
DAL
V
RFH
V
RFL
Min.
-
-
-
-
1.0
-1.4
0.8
-
1.1
-
Typ.
25
0.01
90
96
1.2
-1.2
1.2
-1.2
1.3
-1.3
Max.
32
-
-
-
1.4
-1.0
-
-0.8
-
-1.1
Unit
mA
%
dB
dB
V
V
V
V
V
V
0dB,1KH
Z
-60dB,1KH
Z
Conditions
Block Diagram
45 RFRPRFM
46 TZCRFM
43 RDACO
42 VCDAC
44 AGND2
41 LDACO
40 AVDD2
50 CAGC
52 EQO
48 TEO
49 TEN
51 RFI
AVDD1 1
AC
BD
VBIAS
E
F
PKC
FEN
FEO
2
3
47 SC
RF Signal Gen.
1bit DAC
39 DGND
38 XO
37 XI
Servo Signal Gen.
4
5
6
7
8
9
x8 Over
Sampling
Digital Filter
Digital
Servo
Filter
Digital
Servo
Signal
Processor
Digital
Signal
Processor
36 DVDD
35 XPLCK
34 MONI1
33 MONI0
32 BUSY
31 RESETX
30 R/W
29 DOUT
28 DIN
27 MCK
16K SRAM
BTC 10
PD 11
LD 12
ASY 13
APC
PLL
PCO 14
FCO 15
AGND1 16
FDOUT 17
Command
Interface
BU9532KS2
JUMPO 18
TDOUT 19
SDIN 20
SDOUT 21
CLVOUT 22
CLK88 23
LON 24
CLK 25
SUBSYQ 26
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