Onkyo TX-7620 - Page 6

TX-—7620
IC
BLOCK
DIAGRAM
AND
DESCRIPTIONS
Q705
LC6538D-3984 (Micro processor)
FL TUBE
KEY MATRIX
TO SP
MICRO PROCESSOR
Descriptions
1
S
These
are
the
output
terminal
for
segment
signal.
2
S
“H”
when
active.
DISPLAY
4
This
is
the
display
control
output
terminal.
“H”
during
FL
tube
lights
on.
|
4
|
DIRECT
k
This
is
the
direct
indicator
output
terminal.
Not
used.
|
This is FM control output terminal. Not used.
D9
These
are
the
output
terminal
for
digit
and
key
scan
signal.
“H”
when
active.
These
are
the
auto
reception
mode
indicator
output
terminal.
“L”
when
active.