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參數(shù)資料
| 型號： | ISD-T360SB |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | VoiceDSP Digital Speech Processor with Master/Slave, Full-Duplex Speakerphone, Multiple Flash and ARAM/DRAM Support |
| 中文描述： | VoiceDSP數(shù)字語音處理器與主/從，全雙工揚聲器，多重閃光和雅藍/內(nèi)存支持 |
| 文件頁數(shù)： | 18/109頁 |
| 文件大?。?/td> | 1567K |
| 代理商： | ISD-T360SB |
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1—HARDWARE
ISD-T360SB
1-10
Voice Solutions in Silicon
Figure 1-9: Memory Interface with Four Toshiba 4Mbit Serial Flash Devices and
Optional IVS EPROM
Flash Endurance
A Flash memory may be erased a limited num-
ber of times. To maximize the Flash use, the mem-
ory manager utilizes the Flash’s blocks evenly
(i.e., each block is erased more or less the same
number of times), to ensure that all blocks have
the same lifetime. Refer to the respective Flash
memory device data sheets for specific endur-
ance specifications.
A VoiceDSP processor message uses at least one
block.
The maximum recording time depends on four
factors:
1.
The basic compression rate (5.3 Kbit/s,
9.9Kbit/s, or 16.8Kbit/s).
2.
The amount of silence in the recorded
speech.
3.
The number of bad blocks.
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