ISD14B20
2.1.
Address trigger operational mode
•
While in
NORM
mode, flexible message duration is defined by start address and end
address.
•
Utilize four start addresses (
S0
,
S1
,
S2
&
S3
) and four end addresses (
E0
,
E1
,
E2
&
E3
) to
specific the message duration.
•
•
REC
: Level-hold or Edge-trigger (toggle on-off) recording from start to end addresses.
: Edge-trigger playback from start to end addresses and stops at EOM marker, if EOM
is prior to end address. Toggle on-off.
PLAYE
•
2.2.
: Level-hold playback from start to end addresses. Also, if constantly Low, device will
loop playback from start to end addresses.
PLAYL
Direct trigger operational mode
•
While
MODE
is active, utilizing,
FMC1
,
FMC2
&
FMC3
, the device reconfigures some pins to
adapt various (1 to 8) fixed equal message configurations for random access and pre-defines
the fixed message duration accordingly.
•
The control pins are:
M1
~
M8
(message activation) and
R/P
(record or playback selection).
•
The record or playback operation is pre-defined by the
R/P
pin.
•
Each message can be randomly accessed via its message control pin (
M1
~
M8
) and the
desired operation is facilitated accordingly.
-4-
Publication Release Date: October 9, 2007
Revision 0
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