01W146A Signal processor LSI with pre-servo amplifier for CD players BU9532KS2 Dimension (Units : mm) 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. 12.0 ± 0.3 10.0 ± 0.2 12.0 ± 0.3 10.0 ± 0.2 39 52 14 1.4 ± 0.1 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 0.1 ± 0.1 1 Features 27 26 40 0.5 Description 13 0.65 0.125 ± 0.1 0.3 ± 0.1 0.15 SQFP-T52 Applications Portable CD players, CD radio cassette players Absolute Maximum Ratings (Ta=25˚C) Parameter Symbol Limits Unit Maximum applied voltage Vcc 4.5 Power dissipation 850 ∗ Operating temperature range Pd Topr –25 ~ 75 Storage temperature range Tstg –55 ~ 125 V mW ˚C ˚C ∗Derating : 8.5mW/˚C for operation above Ta=25˚C April, 2002 Recommended Operating Conditions (Ta=25˚C) Parameter Operating power supply voltage Symbol Min. Typ. Max. Unit VDD 2.5 - 3.3 V Electrical characteristics (Unless otherwise noted; Ta=25˚C, Vcc=3.0V) Parameter Symbol Min. Typ. Max. Unit Io - 25 32 mA THD - 0.01 - % 0dB,1KHZ DR - 90 - dB -60dB,1KHZ Circuit current Audio-DAC distortion Audio-DAC Dynamic range Audio-DAC S/N rate S/N - 96 - dB Servo-ADC Max. conversion voltage VADH 1.0 1.2 1.4 V Servo-ADC Min. conversion voltage VADL -1.4 -1.2 -1.0 V Servo-DAC Max. output voltage VDAH 0.8 1.2 - V Servo-DAC Min. output voltage VDAL - -0.8 V RF amplifier Max. output amplitude VRFH 1.1 - V RF amplifier Min. output amplitude VRFL - -1.1 V -1.2 1.3 -1.3 Conditions AVDD1 1 2 BD 3 VBIAS 4 E 5 F 6 PKC 7 FEN 8 FEO 9 40 AVDD2 41 LDACO 42 VCDAC 43 RDACO 44 AGND2 45 RFRPRFM 46 TZCRFM 47 SC 48 TEO 49 TEN 50 CAGC RF Signal Gen. 39 DGND 1bit DAC 38 XO 37 XI x8 Over Sampling Digital Filter Servo Signal Gen. AC 51 RFI 52 EQO Block Diagram Digital Signal Processor Digital Servo Filter 16K SRAM 32 BUSY 31 RESETX Digital Servo Signal Processor APC Command Interface SUBSYQ 26 CLK 25 LON 24 CLK88 23 CLVOUT 22 SDOUT 21 SDIN 20 TDOUT 19 JUMPO 18 29 DOUT 28 DIN 27 MCK BU9532KS2 FDOUT 17 FCO 15 PLL AGND1 16 ASY 13 34 MONI1 30 R/W PCO 14 LD 12 35 XPLCK 33 MONI0 BTC 10 PD 11 36 DVDD