參數(shù)資料
型號： PCL6045B
廠商： Electronic Theatre Controls, Inc.
英文描述： User Manual For PCL6045B Pulse Control LSI
中文描述： 用戶手冊PCL6045B脈沖控制大規(guī)模集成電路
文件頁數(shù)： 36/176頁
文件大?。?/td> 7952K
代理商： PCL6045B
-
29
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8-2.
Pre-registers
The
following
registers
and
start
commands
have
pre-registers:
RMV,
RFL,
RFH,
RUR,
RDR,
RMG,
RDP,
RMD,
RIP,
RUS,
RDS,
RCI,
and
RCMP5.
The
term
pre-register
refers
to
a
register
which
contains
the
next
set
of
operation
data
while
the
current
step
is
executing.
This
LSI
has
the
following
2-layer
structure
and
executes
FIFO
operation.
The
pre-registers
consist
of
two
groups:
the
operation
pre-registers
(PRMV,
PRFL,
PRFH,
PRUR,
PRDR,
PRMG,
PRDP,
PRMD,
PRIP,
PRUS,
PRDS,
PRCI)
and
the
comparator
pre-register
(PRCP5).
8-2-1.
Writing
to
the
operation
pre-registers
The
pre-registers
have
a
two
layer
structure
and
each
register
can
contain
up
to
two
pieces
of
operation
data.
Write
the
data
to
a
pre-register
(P
register
name).
Registers
that
don't
need
to
be
changed
do
not
need
to
be
rewritten.
When
the
PCL
stops
its
current
operation,
the
data
you
wrote
to
the
pre-registers
is
shifted
into
the
working
registers
and
used
as
the
current
data.
When
the
PCL
is
operating,
the
data
remains
stored
as
pre-register
data.
The
data
will
be
transferred
into
the
pre-registers
when
a
start
command
is
issued.
When
the
current
operation
completes,
the
data
will
be
shifted
into
the
working
registers
and
the
PCL
starts
the
new
operation
automatically.
The
status
of
the
pre-registers
can
be
checked
by
reading
PFM
in
the
RSET
register.
When
the
PFM
is
value
is
"11,"
SPRF
in
the
main
status
register
(MSTSW)
changes
to
"1".
Writing
data
while
the
pre-register
is
full
is
not
allowed.
To
change
the
current
operating
status
before
the
operation
is
complete,
such
as
when
you
want
to
change
the
speed,
write
the
new
data
directly
to
the
working
register.
The
relationship
between
the
write
status
of
the
pre-registers
and
the
possible
PFM
values
are
as
follows.
Procedure
2nd
pre-register
0
Undetermined
Data
1
is
undetermined
Data
1
is
undetermined
Write
Operation
Data
2
and
a
Start
command
while
in
operation
undetermined
Write
Operation
Data
3
and
Start
command
while
in
operation
The
operation
using
Operation
Data
1
is
complete
undetermined
1st
pre-register
0
Undetermined
Data
1
is
undetermined
Data
1
is
undetermined
Working
register
0
Undetermined
Data
1
is
undetermined
PFM
SPRF
Initial
status
00
0
Write
Operation
Data
1
00
0
Write
a
Start
command
Data
1
is
set
01
0
Data
2
is
Data
2
is
set
Data
1
is
set
10
0
Data
3
is
set
Data
3
is
set
Data
1
is
set
11
1
Data
3
is
Data
3
is
set
Data
2
is
set
10
0
Also,
by
setting
an
event
interrupt
cause
in
the
RIRQ
register
(IRNM),
the
PCL
can
be
set
to
output
an
signal
as
the
2nd
pre-register
changes
from
"set"
to
"undetermined"
status
when
the
operation
is
complete.
Note:
When
you
want
the
next
operation
to
start
automatically
using
the
pre-registers,
set
the
operation
completion
timing
to
"cycle
completion
(METM
=
0
on
RMD)."
When
pulse
completion
(METM
=
1
on
RMD)"
is
set,
the
time
between
the
last
pulse
and
next
operation
start
pulse
will
be
as
little
as
15x
T
CLK
(T
CKL
:
Reference
clock
cycle).
For
details,
see
11-3-2.
"Control
the
output
pulse
width
and
operation
completion
timing."
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