02-07-2013, 04:55 PM
APR9600 RE-Recording Voive IC - Single-Chip Voice Recording & Playback Device 60-Second Duration
[attachment=56361]
Features :
• Single-chip, high-quality voice recording & playback solution
- No external ICs required
- Minimum external components
• Non-volatile Flash memory technology
- No battery backup required
• User-Selectable messaging options
- Random access of multiple fixed-duration messages
- Sequential access of multiple variable-duration messages
• User-friendly, easy-to-use operation
- Programming & development systems not required
- Level-activated recording & edge-activated play back switches
• Low power consumption
- Operating current: 25 mA typical
- Standby current: 1 uA typical
- Automatic power-down
• Chip Enable pin for simple message expansion
General Description :
The APR9600 device offers true single-chip voice recording,non-volatile storage, and
playback capability for 40 to 60 seconds.The device supports both random and sequential
access of multiple messages.Sample rates are user-selectable,allowing designers to
customize their design for unique quality and storage time needs.Integrated output
amplifier,microphone amplifier, and AGC circuits greatly simplify system design. the device
is ideal for use in portable voice recorders, toys, and many other consumer and industria
applications.
APLUS integrated achieves these high levels of storage capability by using its proprietary
analog/multilevel storage technology implemented in an advanced Flash non-volatile
memory process, where each memory cell can store 256 voltage levels.
This technology enables the APR9600 device to reproduce voice signals in their natural
form. It eliminates the need for encoding and compression.
Functional Description :
APR9600 block diagram is included in
order to describe the device's internal
architecture. At the left hand side of the
diagram are the analog inputs. A
differential microphone amplifier, including
integrated AGC, is included on-chip for
applications requiring use.The amplified
microphone signals fed into the device
by connecting the ANA_OUT pin to the
ANA_IN pin through an external DC
blocking capacitor. Recording can be fed
directly into the ANA_IN pin through a DC
blocking capacitor, however, the
connection between ANA_IN and
ANA_OUT is still required for playback.
The next block encountered by the input
signal is the internal anti-aliasing filter.
Message Management General Description
Playback and record operations are managed by on-chip circuitry. There are several
available messaging modes depending upon desired operation.These message modes
determine message management style, message length, and external parts count.
Therefore, the designer must select the Appropriate operating mode before beginning the
design. Operating modes do not affect voice quality; for information on factors affecting
quality refer to the Sampling Rate & Voice Quality section.
Random Access Mode
Random access mode supports 2, 4, or 8 Message segments of fixed duration. As
suggested recording or playback can be made randomly in any of the selected messages.
The length of each message segment is the total recording length available (as defined by
the selected sampling rate) divided by the total number of segments enabled (as decoded
in Table1). Random access mode provides easy indexing to message segments.
A Functional Description of Recording in Random Access Mode
On power up, the device is ready to record or playback in any of the enabled message
segments. To record,/CE must be set low to enable the device and /RE must be set low to
enable recording. You initiate recording by applying a low level on the message trigger pin
that represents the message segment you intend to use.The message trigger pins are that these pins assume in the other modes.In random access mode these pins should
be considered purely message trigger pins with the same functionality as /M3, /M4, /M5,
and /M6. For a more thorough explanation of the functionality of device pins in different
modes please refer to the pin description table that appears later in this document.
When actual recording begins the device responds with a single beep (if the BE pin is high
to enable the beep tone) at the speaker outputs to indicate that it has started recording.
Recording continues as long as the message pin stays low.
[attachment=56361]
Features :
• Single-chip, high-quality voice recording & playback solution
- No external ICs required
- Minimum external components
• Non-volatile Flash memory technology
- No battery backup required
• User-Selectable messaging options
- Random access of multiple fixed-duration messages
- Sequential access of multiple variable-duration messages
• User-friendly, easy-to-use operation
- Programming & development systems not required
- Level-activated recording & edge-activated play back switches
• Low power consumption
- Operating current: 25 mA typical
- Standby current: 1 uA typical
- Automatic power-down
• Chip Enable pin for simple message expansion
General Description :
The APR9600 device offers true single-chip voice recording,non-volatile storage, and
playback capability for 40 to 60 seconds.The device supports both random and sequential
access of multiple messages.Sample rates are user-selectable,allowing designers to
customize their design for unique quality and storage time needs.Integrated output
amplifier,microphone amplifier, and AGC circuits greatly simplify system design. the device
is ideal for use in portable voice recorders, toys, and many other consumer and industria
applications.
APLUS integrated achieves these high levels of storage capability by using its proprietary
analog/multilevel storage technology implemented in an advanced Flash non-volatile
memory process, where each memory cell can store 256 voltage levels.
This technology enables the APR9600 device to reproduce voice signals in their natural
form. It eliminates the need for encoding and compression.
Functional Description :
APR9600 block diagram is included in
order to describe the device's internal
architecture. At the left hand side of the
diagram are the analog inputs. A
differential microphone amplifier, including
integrated AGC, is included on-chip for
applications requiring use.The amplified
microphone signals fed into the device
by connecting the ANA_OUT pin to the
ANA_IN pin through an external DC
blocking capacitor. Recording can be fed
directly into the ANA_IN pin through a DC
blocking capacitor, however, the
connection between ANA_IN and
ANA_OUT is still required for playback.
The next block encountered by the input
signal is the internal anti-aliasing filter.
Message Management General Description
Playback and record operations are managed by on-chip circuitry. There are several
available messaging modes depending upon desired operation.These message modes
determine message management style, message length, and external parts count.
Therefore, the designer must select the Appropriate operating mode before beginning the
design. Operating modes do not affect voice quality; for information on factors affecting
quality refer to the Sampling Rate & Voice Quality section.
Random Access Mode
Random access mode supports 2, 4, or 8 Message segments of fixed duration. As
suggested recording or playback can be made randomly in any of the selected messages.
The length of each message segment is the total recording length available (as defined by
the selected sampling rate) divided by the total number of segments enabled (as decoded
in Table1). Random access mode provides easy indexing to message segments.
A Functional Description of Recording in Random Access Mode
On power up, the device is ready to record or playback in any of the enabled message
segments. To record,/CE must be set low to enable the device and /RE must be set low to
enable recording. You initiate recording by applying a low level on the message trigger pin
that represents the message segment you intend to use.The message trigger pins are that these pins assume in the other modes.In random access mode these pins should
be considered purely message trigger pins with the same functionality as /M3, /M4, /M5,
and /M6. For a more thorough explanation of the functionality of device pins in different
modes please refer to the pin description table that appears later in this document.
When actual recording begins the device responds with a single beep (if the BE pin is high
to enable the beep tone) at the speaker outputs to indicate that it has started recording.
Recording continues as long as the message pin stays low.