參數(shù)資料
型號: NSAM266SVLJ
廠商: National Semiconductor Corporation
元件分類: FLASH
英文描述: 4 Mbit Uniform Sector, Serial Flash Memory
中文描述: 4兆位統(tǒng)一部門,串行閃存
文件頁數(shù): 21/52頁
文件大小: 571K
代理商: NSAM266SVLJ
2.0 Software
2.1 OVERVIEW
The CompactSPEECH software resides in the on-chip
ROM. It includes DSP-based algorithms, system support
functions and a software interface to hardware peripherals.
2.1.1 DSP-based Algorithms
#
Speech compression and decompression
#
DTMF detector with echo canceler
#
Energy-based busy and dial-tone detector
#
Digital volume control
2.1.2 System Support
#
Command interface to an external microcontroller
#
Memory and message manager
#
IVS support
#
Tone generator
#
Real-time clock handler
#
Power-down mode support
2.1.3 Peripherals Support
#
Serial flash interface (Master MICROWIRE handler)
#
Microcontroller interface (Slave MICROWIRE handler)
#
Codec interface
The following sections describe the CompactSPEECH soft-
ware in detail.
http://www.national.com
21
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