Aiwa XR-MD85 Service Manual page 40

Md/cd stereo system
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IC, LC78622E
PinNane
1
DEFI
Defect sense signal (DEF) input pin. (Connect to OV when not used).
TAI
Test signal input pin with built-in pull-down resistor. Be sure to connect to OV.
| o |
Phase comparator output pin to control external VCO.
VVSS
| — |
GND pin for built-in VCO. Be sure to connect to 0V.
For PLL.
| os
|
ISET
Pin to which external resistor adjusting the PDO output current.
=
ee ||
VVDD
eee.
Power supply pin for built-in VCO.
Pin for VCO frequency range adjustment.
ae
ie
ae
Digital system GND.
Be sure to connect to OV.
For slice level control.
TEST2
Test signal input pin with built-in pull-down resistor. Be sure to connect to OV.
12, 13
CLV+, CLV-—
Lo | Disc motor control output. Three level output is possible using command.
4
7 iB
Rough servo or phase control automatic selection monitoring output pin. Rough servo
at H. Phase servo at L.
| ois
|
RLd|s
Track detect signal input pin. Schmidt input.
Tracking error signal input pin. Schmidt input.
re
See
es
Tracking gain selection output pin. Gain boost at L.
19, 20
JP+, JP-
Lo | . Track jump control signal output pin. Three level output is possible using command.
a
ae
a
EFM data playback clock monitoring pin 4.3218 MHz when phase is locked in.
i
FSEQ
Sync signal detection output pin. H when the sync signal which is detected from EFM
signal and thesync signal which is internally generated agree.
.
wm
|
The pin is controlled by the serial data
command from microprocessor. When
the pin is not used, set the pin to the input
24-28
SL+ - PUIN
General purpose input/output pin 1 to 5.
terminal and connect to OV, or alternately
set the pin to output terminal and leave
the pin open.
De-emphasis monitor output pin. De-emphasis disc is being played back at H.
C2 flag output pin.
DIGITAL OUT output pin. (EIAJ format).
Test signal input pin with built-in pull-down resistor. Be sure to connect to OV.
29
EMPH
C2F °
w Oo
DO
UT
8
r
z
z
| reno | 0
pa [evo |
[—e | wom [0 _
w
_—
Not used. Set the pin to open.
ane
paar
Z
io)
R-channel 1-bit DAC.
54

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