Philips 22RC026/00 - IC Circuit Descriptions; IC601 - LC78620 E Terminal Functions

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Number | Code
1
| PDO
4
7 AL
EFM
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HFL
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Function Explanation
Defect detection signal (DEF) input terminal. (When unused, "L".)
For PLL Input terminal for testing. Pulldown resistance is self-contained.
Phase comparison output terminal for outer VCO control.
Power supply terminal for self-contained VCO. Normally OV.
Resistance connecting terminal for PDO output current adjustment.
Earthing terminal for self-contained VCO. Normally 5V.
For VCO range frequency adjustment.
Earthing terminal for digital system. Normally OV.
For slice level control EFM signal reverse output terminal.
EFM signal output terminal.
EFM signal input terminal.
Input terminal for testing. Pulldown resistance is self-contained.
| oO | Output terminal for spindle servo control. Accelelates when CLV+ is "H", slows down
when CLV: "H". |
Output terminal for automatic switchover monitor by rough servo / phase control. "H"
on Mm or
7
my m
Ti =
Ol} O
a =
1
4
13
< v
causes rough servo, "L” phase control mode.
Output terminal for focus servo on/off. "L" causes focus servo ON.
Output terminal for focus start pulse. Open drain output.
Input terminal for focus error zero cross signal. (When unused, "L".)
O O
17
18
19 Input terminal for track detecting signal. Schmidt input.
Input terminal for tracking error signal. Schmidt input.
Clock monitoring terminal for EFM data playback. At the time of phase lock,
4.3218MHz. |
Output terminal for synchronous signal detection. When synchronous signa! detected
from EFM signal and synchronous signal occurring inside correspond, "H".
Output terminal for tracking OFF.
Output terminal for tracking gain switchover. "L" raises gain.
Output terminal for tracking hold.
Output terminal for testing. Pulldown resistance is self-contained.
2
nN Y”) m O
24
27 Vop Power supply terminal for digital system. Normally 5V
JP+ Output terminal for track jump. When JP+ is "H", accelerates at the time of outer track
direction jump, or slows down at the time of inner track direction jump. When JP- is "H",
JP— accelerates at the time of inner track direction jump, or slows down at the time of outer
30
Input
terminal
for
sound
turn-on
function
at
the
time
of
set
adjustment
process.
Pulldown resistance is self-containd. |
TEST4 Input terminal for testing. Pulldown resistance is self-containd.
EMPH Output terminal for deemphasis monitor. At the time of "H", deemphasis disc ts in play-
back.
Digital filter output.
Word clock output.
RCH data output.
LCH data output.
Bit clock output.
Output
terminal
for
testing.
Open
(Normally
“L”
output).
Anti-shock correspondence Bit clock input.
input. (Unused, “L”.) LRch data.
35
36
51
1
1
34
22RC026 -14-
PCS 82 450