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參數(shù)資料
| 型號： | D6351A-11 |
| 英文描述： | Telecommunication IC |
| 中文描述： | 通信集成電路 |
| 文件頁數(shù)： | 3/4頁 |
| 文件大?。?/td> | 447K |
| 代理商： | D6351A-11 |
D6351A
A
System Functions
All of the speech processing tasks are done by the DSP Speech Subsystem. This allows the use of a very low cost
microcontroller to be used for basic control of the system. The Host need only send high level commands to perform
functions such as Record Message or Delete Message and the operation is performed by the DSP subsystem which
reports the status of the operation to the Host. All memory interface and management is taken care of by the DSP,
requiring the Host to only handle high level system functions. A summary of the functions performed by the DSP
Speech Subsystem and Host Controller are shown in Figure 3, below.
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Speech Recording
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Speech Playback
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Memory / Message Management
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DTMF and Tone Generation
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DTMF Detection
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Call Process Detection
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Time / Date Stamping
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Voice Prompts
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Phone Number Storage
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SpeakerPhone Functions
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Control the System
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Read Buttons
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Control Displays / Switches
Host Controller
D6351A-11
Figure 3. System Functions
Simple Hardware Interface
The hardware interface between the D6351A and the Host Controller is a simple one requiring only an 8-bit parallel
port and 4 handshake lines. The Host writes high level commands to the D6351A, and the D6351A responds with
status information. Once a command is issued, the D6351A will use the ACK pin to indicate that the status is available
to be read. The hardware interface between the D6351A and Host is shown in Figure 4 below.
HSTD0-7
HSTR
HSTW
HI/LO
ACK
Port 0
RD
WR
HI/LO
INT
8051
D6351A-11
8
Figure 4. D6351A / Host Interface
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