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Abbreviations and Pin-description of ICs
SERVO PROCESSOR SAA7379HL
SYMBOL
PIN
I/O
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
5
SUP
analog ground1
SSA1
reference current output (24k Ω resistor connected to analog ground)
I
6
O
REF
V
7
SUP
analog supply voltage1
DDA1
V
8
I/O
servo reference voltage
REFO
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
16
SUP
analog supply voltage2
DDA2
V
17
SUP
analog ground 2
SSA2
OSCOUT
18
O
crystal/resonator output
OSCIN1
9
I
crystal/resonator input
V
20
SUP
analog ground 3
SSA3
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
audio DAC decoupling point (10 µF or 100 nF to ground
DACV
24
I/O
ref
DACLN2
5
O
audio DAC left channel differential negative output
DACLP2
6
O
audio DAC left channel differential positive output
DACV
27
I
audio DAC positive supply voltage
pos
BUFV
28
I
audio buffer positive supply voltage
pos
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
RKILL3
5
O
KILL output for right channel (con
N/C3
6
O
No connection
N/C3
7
O
No connection
N/C3
8
I
No connection
CFLAG3
9
O
correction
V
40
SUP
digital ground1
SSD1
4-2
DESCRIPTION
urable as open-drain)
urable as open-drain)
g output (open-drain)
SYMBOL
PIN
I/O
V
41
SUP
digital supply voltage1
DDD1
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
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
61
SUP
digital ground2
SSD2
DOBM
62
O
bi-phase mark output (externally buffered)
V
63
SUP
digital supply voltage2
DDD2
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
69
SUP
digital ground3
SSD3
V
70
SUP
digital supply voltage3
DDD3
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
4-2
DESCRIPTION
g output
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