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Samsung RCD-750 - ASSP (KA9220) IC Pin Description

Samsung RCD-750
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Pin
No.
Symbol
Vo
Description
9
B-OUT
1
oO
Output
pin
of
buffer
1
10
B-IN
1
|
Input
pin
of
buffer
1
11
B-IN
2
|
Input
pin
of
buffer
2
12
B-OUT
2
O
Output
pin
of
buffer
2
13
DE-EM
IN
2
|
De-emphasis
input
pin
2
14
DE-EM
OUT
2
oO
De-emphasis
output
pin
2
15
DE-EM
CTL
2
I
De-emphasis
control
2
16
RIPPLE
-
Input
pin
of
ripple
eliminate
17
VREF
-
Output
pin
of
VREF
(1/2
VCC)
18
LIN
2
|
Input
pin
of
LPF
2
19
L
OUT
2
O
Output
pin
of
LPF
2
20
VCC
-
Input
of
VCC
@
ASSP
(KA9220)
(NIC
9220)
Pin No.
Symbol
oO
Description
1
AVEE
(R)
Analog
negative
power
supply
input
pin
for
RF
part
2
CPH
|
Capacitor
connection
pin
of
mirror
hold.
3
CBH
|
Capacitor
connection
pin
of
defect
bottom-hold
4
TESTD
O
Defect
test
pin
5
TESTM
oO
Mirror
test
pin
6
Test
1
Input
pin
of
test
7
PFSET
Peak
frequency
setting
pin
for
focus,
tracking
compensation
and
fc
(cut
off
frequency)
of
CLV
LPF.
8
SSTOP
|
Check
the
position
pin
of
pick-up
whether
inside
or
not.
9
DIRC
|
Direct
1
Track
Jump
Control
Pin
10
AVCC
(S)
Analog
positive
power
supply
input
pin
for
SERVO
part.
11
WDCH
Auto-sequencer
clock-input
pin
(Normal
speed
=
88.2KHz,
Double
speed
=
176.4KHz)
12
SMPD
|
Connection
pin
of
DSP
SMPD
13
SMON
I
Connection
pin
of
DSP
SMON,
spindle
servo
ON
at
“H"
14
N/C
No
connection
pin
15
TGSW
I
Providing
time
constant
to
change
the
high
frequency
tracking
gain
16
RTG
I
Capacitor
connection
pin
to
switch
the
tracking
gain
of
high
frequency
17
LFR
I
Capacitor
connection
pin
to
perform
rising
low
bandwidth
of
focus
servo
loop
18
FSW
High
frequency
gain
of
focus
servo
loop
can
be
changed
by
FS3
switch
ON
or
OFF
S21
RCD-750

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