Philips MC150/21, Руководство по обслуживанию

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Abbreviations and Pin-description of ICs
SERVO PROCESSOR SAA7379HL
4-2
4-2
SYMBOL PIN I/O DESCRIPTION
LFPOWER1 I laser power supply
EXFILTER 2 O 10 nF capacitor for laser start-up control
MONITOR3 I laser monitor diode
SENSE4 I OPU ground reference point for MONITOR measurement
V
SSA1
5 SUP analog ground1
I
REF
6 O reference current output (24k
Ω
resistor connected to analog ground)
V
DDA1
7 SUP analog supply voltage1
V
REFO
8 I/O servo reference voltage
D1 9 I diode voltage/current input (central diode signal input)
D2 10 I diode voltage/current input (central diode signal input)
D3 11 I diode voltage/current input (central diode signal input)
D4 12 I diode voltage/current input (central diode signal input)
R1 13 I diode voltage/current input (satellite diode signal input)
R2 14 I diode voltage/current input (satellite diode signal input)
CSLICE 15 I/O 10n F capacitor for adaptive HF data slicer
V
DDA2
16 SUP analog supply voltage2
V
SSA2
17 SUP analog ground 2
OSCOUT 18 O crystal/resonator output
OSCIN1 9 I crystal/resonator input
V
SSA3
20 SUP analog ground 3
DACGND 21 I audio DAC ground
DACRP2 2 O audio DAC right channel differential positive output
DACRN2 3 O audio DAC right channel differential negative output
DACV
ref
24 I/O audio DAC decoupling point (10
µ
F or 100 nF to ground
DACLN2 5 O audio DAC left channel differential negative output
DACLP2 6 O audio DAC left channel differential positive output
DACV
pos
27 I audio DAC positive supply voltage
BUFV
pos
28 I audio buffer positive supply voltage
BUFINR 29 I audio buffer right input
BUFOUTR3 0 O audio buffer right output
BUFOUTL3 1 O audio buffer left output
BUFINL 32 I audio buffer left input
BUFGND 33 I audio buffer ground
LKILL3 4 O KILL output for left channel (con urable as open-drain)
RKILL3 5 O KILL output for right channel (con urable as open-drain)
N/C3 6 O No connection
N/C3 7 O No connection
N/C3 8 I No connection
CFLAG3 9 O correction g output (open-drain)
V
SSD1
40 SUP digital ground1
V
DDD1
41 SUP digital supply voltage1
SDI 42 I serial data input (loopback)
WCLI 43 I word clock input (loopback)
SCLI 44 I serial bit clock input (loopback)
EF 45 O C2 error g output
DATA 46 O serial data output
WCLK 47 O word clock output
S CLK 48 O serial clock output
C LK 16 49 O 16 MHz clock output
CLK4/12 50 O co gurable 4M Hz or 12 MHz clock output
RESET 51 I power-on reset input (active LOW)
SDA 52 I/O microcontroller interface data input/output (open-drain)
SCL 53 I microcontroller interface clock input
RAB 54 I microcontroller interface R/W and load control input (4-wire)
SILD 55 I microcontroller interface R/W and load control input (4-wire)
STATUS 56 O servo interrupt request line/decoder status register/DC offset value
readback output
RCK 57 I subcode clock input
SUB 58 O P to W subcode output
SFSY 59 O subcode frame sync output
SBSY 60 O subcode block sync output
V
SSD2
61 SUP digital ground2
DOBM 62 O bi-phase mark output (externally buffered)
V
DDD2
63 SUP digital supply voltage2
RA 64 O radial actuator output
FO 65 O focus actuator output
SL 66 O sledge actuator output
MOTO1 67 O motor output 1 output
MOTO2 68 O motor output 2 output
V
SSD3
69 SUP digital ground3
V
DDD3
70 SUP digital supply voltage3
V1 71 I versatile pin 1 input
V2 72 I versatile pin 2 input
V3 73 O versatile pin 3 output
V4 74 O versatile pin 4 output
V5 75 O versatile pin 5 output
TEST1 76 I test pin 1 input
TEST2 77 I test pin 2 input
TEST3 78 I test pin 3 input
TEST4 79 I test pin 4 input
LASER 80 O laser drive output
SYMBOL PIN I/O DESCRIPTION