Philips AZ3300 Service Manual page 10

4 -2
PIN DESCRIPTIN OF INTEGRATED CIRCUIT
SAA7824
CD audio decoder, digital servo & filterless DAC
with integrated pre-amp & laser control
SYMBOL PIN
LPOWER 1 Laser power supply
EXTFILTER 2 10 nF capacitor for Laser start-up control
MONITOR 3 Laser monitor diode
SENSE 4 OPU ground reference point for MONITOR measurement
V 5 Analogue ground 1
SSA1
IREF 6 Reference current pin (24K
V 7 Analogue supply voltage 1
DDA1
VREF_OUT 8 Servo reference voltage
D1 9 Diode voltage/current input (central diode signal input)
D2 10 Diode voltage/current input (central diode signal input)
D3 11 Diode voltage/current input (central diode signal input)
D4 12 Diode voltage/current input (central diode signal input)
R1 13 Diode voltage/current input (satellite diode signal input)
R2 14 Diode voltage/current input (satellite diode signal input)
CSLICE 15 10nF capacitor for adaptive HF dataslicer
V 16 Analogue supply voltage 2
DDA2
V 17 Analogue ground 2
SSA2
OSCOUT 18 Crystal/resonator output
OSCIN 19 Crystal/resonator input
V 20 Analogue ground 3
SSA3
DAC_GND 21 Audio DAC ground
DAC_RP 22 Audio DAC right channel differential output (positive)
DAC_RN 23 Audio DAC right channel differential output (negative)
DAC_VREF 24 Audio DAC decoupling point (10uF//100nF to ground)
DAC_LN 25 Audio DAC left channel differential output (negative)
DAC_LP 26 Audio DAC left channel differential output (positive)
DAC_VPOS 27 Audio DAC positive supply
BUF_VPOS 28 Audio buffer positive supply
BUF_IN_R 29 Audio buffer right input
BUF_OUT_R 30 Audio buffer right output
BUF_OUT_L 31 Audio buffer left output
BUF_IN_L 32 Audio buffer left input
BUF_GND 33 Audio buffer ground
LKILL 34 Kill output for left channel (configurable as open drain)
RKILL 35 Kill output for right channel (configurable as open drain)
CDT_RDY 36 CD-Text to micro ready flag
CDT_DATA 37 CD-Text data to micro
CDT_CLK 38 CD-Text micro clock
CFLAG 39 Correction flag output (open drain)
V 40 Digital ground 1
SSD1
V 41 Digital supply voltage 1
DDD1
SDI 42 Serial data input (loopback)
WCLI 43 Word clock input (loopback)
DESCRIPTION
Ω
resister to analogue ground)
4 -2
SYMBOL PIN
SCLI 44 Serial bit clock (loopback)
EF 45 C2 error flag
DATA 46 Serial data output
WCLK 47 Word clock output
SCLK 48 Serial clock output
CLK16 49 16MHz clock
CLK4_12 50 Configurable 4MHz or 12MHz clock
RESET 51 Power on reset (active low)
SDA 52 Micro interface data I/O line (open drain output)
SCL 53 Micro interface clock line
RAB 54 Micro interface R/W & load control line (4-wire)
SILD 55 Micro interface R/W & load control line (4-wire)
STATUS 56 Servo interrupt request line/decoder status register/DC offset value readback
RCK 57 Subcode clock
SUB 58 P to W subcode
SFSY 59 Subcode frame sync
SBSY 60 Subcode block sync
61 Digital ground 2
V
SSD2
DOBM 62 Bi-phase mark output (externally buffered)
V 63 Digital supply voltage 2
DDD2
RA 64 Radial actuator
FO 65 Focus actuator
SL 66 Sledge actuator
MOTO1 67 Motor output 1
MOTO2 68 Motor output 2
V 69 Digital ground 3
SSD3
V 70 Digital supply voltage 3
DDD3
V1 71 Versatile pin 1
V2 72 Versatile pin 2
V3 73 Versatile pin 3
V4 74 Versatile pin 4
V5 75 Versatile pin 5
TEST1 76 Test pin
TEST2 77 Test pin
TEST3 78 Test pin
TEST4 79 Test pin
LASER 80 Laser drive
DESCRIPTION