APR9600 Aplus Integrated circuits Inc., APR9600 Datasheet - Page 7

• Manufacturer Part Number: APR9600
• Description: Single-chip Voice Recording & Playback Device 60-second Duration
• Manufacturer: Aplus Integrated circuits Inc.

APR9600
-
INTEGRATED CIRCUITS INC.
3.1.3.2A
Functional Description of Recording In Tape Mode using the Normal Option
On power-up, the device is ready to record or playback,starting at the first address in the
memory array.Before you can begin recording, the /CE input must be set to low to enable
the device and /RE must be set to low to enable recording. On a falling edge of the
/M1_MESSAGE pin the device will beep once and initiate recording. A subsequent rising
edge on the /M1 Message pin will stop recording and insert a single beep.
If the M1_MESSAGE pin is held low beyond the end of the available memory, recording
Stops automatically, and two beeps are inserted; regardless of the state of the
/M1_MESSAGE pin. The device returns to the standby mode when the /M1_MESSAGE
pin is returned high.A subsequent falling edge on the /M1_MESSAGE pin starts a new
record operation in the memory array immediately fol- lowing the last recorded message,
thus preserving the last recorded message.To record over all previous messages you must
pulse the /CE pin low once to reset the device to the beginning of the first message. You
can then initiate a record sequence, as described above, to record a new message. The
most recently recorded message will become the last recorded message and all previously
recorded messages following this message will become inaccessible.
If you wish to preserve any current messages it is recommend that the Auto Rewind option
be used instead of the Normal option. If the Normal option is necessary the following
sequence can be used. To preserve current messages you must fast forward past
the messages you want to keep before you can record a new message. To fast forward
when using the Normal option you must switch to play mode and listen to messages
sequentially until you arrive at the beginning of the message you wish to overwrite.
At this stage you should switch back to record mode and overwrite the desired message.
The most recently recorded message will become the last recorded message and all
previously recorded messages following this message will become inaccessible. All inputs,
except /CE, are ignored during recording.
3.1.3.2B Functional Description of Playback in Tape Mode using the Normal Option
On power-up, or after a low to high transition on /RE the device is ready to record or
playback starting at the first address in the memory array. Before you can begin playback of
messages, the /CE input must be set to low to enable the device and /RE must be set to
high to enable playback. The first high to low going pulse of the /M1_MESSAGE pin
initiates playback from the beginning of the current message. When the /M1_MESSAGE
pin pulses from high to low a second time, playback of the current message stops
immediately. When the /M1_MESSAGE pin pulses from high to low a third time, playback
of the next message starts again from the beginning. If you hold the /M1_MESSAGE pin
low continuously, the current message and subsequent messages play until the one
of the following conditions is met: the end of the memory array is reached, the last
message is reached,the /M1_message pin is released. If the last recorded message has
already played, any further transitions on the /M1_MESSAGE pin will initiate a double beep
for warning and the /M7_END pin will go low. To exit this state you must pulse the /CE pin
high and then low once during standby to reset the pointer to the beginning of the first
message.
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