Circuit Operation Description - Sanyo CDF-R800 Service Manual

CIRCUIT OPERATION DESCRIPTION
-1-
PIN PORT
NAME
29
EMPH
1/0
o
DESCRIPTION
Output terminal for reemphasis monitor.
At the
time of "H", reemphasis disc is in playback.
30
C2F o
C2 Frag output.
31
DOUT
o
Digital Out output terminal.
32 TEST3
I
Input terminal for testing. Pulldown resistance is self- contained.
33 TEST4 I Input terminal for testinq. Pulldown resistance is self-contained.
/
--
H=
35 MUTEL
36
LVDD
37 LCHO
I 38 I LVSS
R--w
41 RVDD
42 MUTER
43
XVDD
44 XOUT
45 XIN
46 Xvss
47 SBSY
48 EFLG
49 Pw
50 SFSY
El=
H=
53
WRQ
54
RWC
55 SQOUT
56
COIN
57 CQCK
H=
58
RES
59 TST11
60
16M
o
Fir 1 bit DAC Mute output terminal.
Power supply terminal for L channel.
o
L channel O output terminal.
Earting terminal for L channel. Normally OV.
Earting terminal for R channel. Normally OV.
o
R channel O output terminal.
Earting terminal for R channel. Normally OV.
o
Mute output terminal.
Power supply terminal for crystal oscillation. Normally 5V.
o
Connecting terminal for 16.9344MHz crystal oscillator.
I
I
-i5-
Earthing terminal for crystal oscillation. Normally OV.
Output terminal for synchronous signal of sub-code block.
Terminal for monitoring Cl ,C2, single, double correction.
Outtwt terminal for sub-code P. Q. R. S. T.U.W.
Ou~put terminal for synchronous signal of sub-code frame.
When sub-code is in standby, "= L".
Input terminal for sub-code readout clock. Schmidt input.
Output terminal for 7.35kHz synchronous signal which is divided frequency from
crystal oscillation.
Output terminal for sub-code Q output stabdby.
Input terminal for read/write control.
Sub-code Q output terminal.
Input terminal for command from micro computer.
Input terminal for command input intake clock,or sub-code offtake clock from
SQOUT. Schmidt irmut.
I
Chip reset input terminal. When power is supplied, changeover to "L" once.
Input terminal for testing. Open (Normally "L" output).
16,9344MHz output terminal. But outputs 33.8688MHz, only in case of quadruple
speed playback mode.
61 4.2M o
4.2336 MHz outDut terminal.
-
b
62 TEST5 I
Input terminal for testing. Pulldown resistance is self-contained.
63
Cs I
Chip select input terminal. Pulldown resistance is self-contained.
64 TEST1 I Input terminal for testing. Pulldown resistance is self-contained.
–11–