Philips AZ3300 Service Manual page 11

BLOCK DIAGRAM OF INTEGRATED CIRCUIT
SAA7824
CD audio decoder, digital servo & filterless DAC
with integrated pre-amp & laser control
D1 D2 D3 D4 R1 R2
DC OFFSET COMPENSATION
VOLTAGE BUFFER
HF & LF CAPTURE
I
REF
BIAS
GENERATOR
V
REF_OUT
CONTROL
HFPASS FILTER
PART
SCL
DATA SLICER &
THRESHOLD CON-
MICRO
SDA
TROL
INTERFACE
RAB
SILD
DIGITAL
PLL
TEST1
TEST2
TEST3 TEST
EFM
TEST4
DEMODULATOR
OSCIN
TIMING
OSCOUT
SRAM
CLK16
CLK4_12
RAM
CDT_RDY
ADDRESSER
CD-TEXT
CDT_DATA
INTERFACE
CDT_CLK
SFSY
INTERFACE
SUB
SUBCODE
CONTROL
PROCESSOR
RCK
SBSY
DECODER
MICRO-
STATUS
CONTROLLER
INTERFACE
RESET
4 - 3
EXTFILTER
MONITOR SENSE LPOWER
LASER
MONITOR LASER
POWER CON- LASER
ADC
TROL LOGIC
ANTI ALIAS
RA
D1-D4
DSIC ADC OUTPUT
SUM
STAGES FO
SL
CONTROL FUNCTION
CSLICE
MOTO1
MOTOR
CONTROL
MOTO2
ERROR
CORRECTOR
FLAGS
CFLG
AUDIO
PROCESSOR
EBU
DOBM
INTERFACE
EF
SERIAL
SCLK
DATA
INTERFACE WCLK
DATA
SCLI
SERIAL
DATA
WCLI
(LOOPBACK)
INTERFACE
SDI
DAC_VPO
PEAK
DAC_RP
DETECT
DAC_RN
DEM DAC
DAC_LP
DAC_LN
DAC_VREF
DAC_GND
BUF_IN_R
VERSATILE PINS
HEADPHONE BUF_IN_L
INTERFACE
KILL
BUFFERS
BUF_OUT_R
BUF_OUT_L
BUF_VPOS
V1 V2 V3 V4 V5 LKILL RKILL
BUF_GND
MM1469AH
4 - 3