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Sony UP-980 - Serial Data Reading from System Control.0; Writing to the Frame Memoly.00; Thermal Head Control and One Line Memoty

Sony UP-980
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4-3-1.
Serial
Data
Reading
from
System
Control
The
system
control
(IC505)
has
four
kinds
of
data
to
send
IC601.
There
are
respectively
registers
for
storing.
Which
register
is
selected
by
combination
of
“H”
and
“L”
inputs
to
IC601
pins
137
and
138.
Pin
137
Pin
138
Register
to
be
selected
H
image
scaling
calculation
circuit
H
L
Gamma
data
L
H
SYNC
signal
processing
parameter
L
L
Various
mode
setting
4-3-2.
Writing
to
the
Frame
Memory
Image
data
of
next
one
frame
is
written
in
frame
memory
by
inputting
fetch
pulse
from
system
control
to
IC601
pin
125.
Fetching
method
to
the
memory
is
changed
by
sampling
frequency
of
this
time.
UP-980/980CE
use
two
16
M-DRAMs
(1
word
is
16
bit)
as
image
memory.
In
case
sampling
frequency
is
46
MHz,
the
data
is
written
in
DRAM
every
four
sampling
data
(32
bit).
This
time
memory
space
is
address
space
of
1024
x
1024
and
depth
direction
of
one
address
is
32
bit.
In
this
case,
two
DRAMs
are
controlled
simultaneously
during
fetching
to
the
memory.
In
case
sampling
frequency
is
except
46
MHz,
the
data
is
written
in
DRAM
every
two
sampling
data
(16
bit).
This
memory
space
is
address
space
of
1024
x
2024
and
depth
direction
of
one
address
is
16
bit.
In
this
case,
two
DRAMs
are
controlled
separately.
=,
rs
ee
de
eb
ee
(Frame
Unit)
ee
ODD/EVEN
—
+d
[4
-—_———
:
WE
eS
ae.
lf
==
IMAGE
FETCHING
PERIOD
4-3-3.
Transfer
from
Frame
Memory
to
Line
Memory
If
COPY
pulse
is
inputted
from
system
control
to
IC601
pin
128,
IC601
performs
COPYING
signal
to
“L”,
and
the
print
operation
is
started.
In
order
to
print,
selected
one
line
data
from
frame
memory
is
transferred
to
one
line
memory
in
IC601.
IC601
reads
necessary
print
data
from
frame
memory.
Its
print
range
and
print
character
direction
are
indicated
by
mode
set
of
system
control.
This
data
is
scaled
and
stored
at
one
line
memory.
Transfer
of
the
data
is
performed
every
“L”
period
of
INTV
signal.
INTV
signal
is
pulse
for
print
timing
of
one
line.
It
is
made
at
IC601
and
locked
approximately
10
Ms
period.
4-3-4,
Thermal
Head
Control
and
One
Line
Memory
All
thermal
head
control
is
performed
by
IC601.
Built-in
one
line
memory
is
used
when
transferring
a
print
data
to
the
thermal
head.
Refer
to
the
thermal
head
section
for
the
detail.
4-6
UP-980(UC)
UP-980CE(CE)

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