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參數(shù)資料
| 型號： | APR9600 |
| 廠商： | Aplus Integrated Circuits Inc. |
| 英文描述： | SINGLE-CHIP VOICE RECORDING & PLAYBACK DEVICE FOR SINGLE 60 SECOND MESSAGE |
| 中文描述： | 單芯片語音記錄 |
| 文件頁數(shù)： | 2/17頁 |
| 文件大?。?/td> | 2158K |
| 代理商： | APR9600 |
Page 2
Single-Chip Voice Recording & Playback Device for Multiple 40- to 60-Second Messages
Functional Description
The APR9 block diagram is included in order to give
understanding of the APR960 i nternal architecture. At the
left hand side of the diagram are the analog inputs. A differ-
ential microphone amplifier, including integrated AGC, is
included on-chip for applications requiring its use. The ampli-
fied microphone signal is 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. The filter automatically adjusts
its response according to the sampling frequency selected so
Shannon’s Sampling Theorem is satisfied. After anti-aliasing
filtering is accomplished the signal is ready to be clocked into
the memory array. This storage is accomplished through a
combination of the Sample and Hold circuit and the Analog
Write/Read circuit. These circuits are clocked by either the
Internal Oscillator or an external clock source. When play-
back is desired the previously stored recording is retrieved
from memory, low pass filtered, and amplified as shown on
the right hand side of the diagram. The signal can be heard
by connecting a speaker to the SP+ and SP- pins. Chip-wide
management is accomplished through the device control
block shown in the upper right hand corner. Message man-
agement is controlled through the message control block rep-
resented in the lower center of the block diagram. More detail
on actual device application can be found in the
Sample
Applications
section. More detail on sampling control can be
found in the
Sample Rate and Voice Quality
section. More
detail on message management and device control can be
found in the
Message Management
section.
Figure 2 APR9600 Block Diagram
Internal
Oscillator
Anti-Aliasing
Filter
Sample & Hold
Circuit
Low Pass
Filter
Analog Write &
Read Circuits
256k Cell
Flash EPROM
Analog Storage
Array
Message Decoders
Message Control
Power Supplies
Automatic Gain
Control (AGC)
Pre-
Amp
Amp
Mux
OscR
ExtClk
Ana_In
Ana_Out
MicIn
MicRef
AGC
VCC VCCA VSSD VSSA
/M1_Message /M2_Next /M3 /M4 /M5 /M6
/M7_END
/M8_Option
MSEL2
MSEL1
SP+
SP-
BE
/Busy
/Strobe
/CE
/RE
Device Control
APR9600
APLUS
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| APR-ABK | 功能描述:烙鐵 Action Button Kit RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included |
| APR-ABS | 功能描述:烙鐵 Arm Brake Solenoid RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included |
| APR-ACPCB | 功能描述:烙鐵 AC Power PCB RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included |
| APR-AH | 功能描述:烙鐵 Air Hose Kit RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included |
| APR-ALRWH | 功能描述:烙鐵 Arm Lock Retractable Wire Harness RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included |
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