Description
for
Operations
(1
)
Programming
command/status
(CIS)
register
The
command
register
is
an
8-bit
latch.
The
CIS
register
contents
can
be
changed
anytime
by
writing
to
10
address
XXXXXOOO
in
an
10
cycle.
The
bit
configuration
for
the
CIS
register
is
shown
below.
Definition of PA0
~hrough PA7
I
through PB7
'Refer
to
allocation
I
table for
pon
Control
given
below
'
00: NOP-(no
era ti on)
has no effects on counter operation.
01: STOP-Stops when timer is
rl~nning. Otherwise, NOP.
STOP AFTER TC-Stops when TC
is
reached. Otherwise, NOP.
START-Starts immediately after entering mode and count length
if
timer
is
not operating. When timer is operating the command enters
new mode and count length, and then starts immediately
hen TC
IS
reached.
*Allocarion
table
for
port control
APX-E-
36
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