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參數(shù)資料
| 型號： | W9321 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 編解碼器 |
| 英文描述： | ADPCM Codec(ADPCM編解碼器) |
| 中文描述： | MU-LAW, ADPCM CODEC, PDIP28 |
| 封裝： | PLASTIC, DIP-28 |
| 文件頁數(shù)： | 7/35頁 |
| 文件大小： | 457K |
| 代理商： | W9321 |
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Preliminary W9321
Publication Release Date: May 1999
- 7 -
Revision A1
S
Interfac
2
intU
2B+D
Remote Office Terminal
(ROT)
U
interface
2B+D
S
Interface
Layer 2
ADPCM
SD Codec
Central Office Terminal
(COT)
Channel 1
Channel 2
Channel 3
Channel 4
Centeral
Office (CO)
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
End User
Telephone System
Micro-Controller
Micro-Controller
ADPCM
SD Codec
ADPCM
SD Codec
ADPCM
SD Codec
ADPCM
SD Codec
ADPCM
SD Codec
ADPCM
SD Codec
ADPCM
SD Codec
Figure 5-1 System Diagram for Pair Gain Application
5.2. Cordless Phone System
Figure 5-2 shows a cordless phone system block diagram. On the transmission side, the voice is sent
to the W9321 ADPCM Codec from the external microphone. First, the analog speech signal is
digitized into a 14-bit linear signal and compressed into 32 Kbps ADPCM data. The compressed
signal is then sent to the W9330F SST which provides all the baseband functions required for an FCC
Part 15 compliant cordless phone. The SST W9330 will generate the spread spectrum binary
sequence for output to an RF modulator. The microprocessor manages the other functions of the
cordless phone such as the keypad and display control. On the receive side, the WHT9362 RF
Module converts the received signal to baseband. The W9330 SST then performs the de-correlation
and demoulation and sends the 32K bps speech signal into the W9321 ADPCM. The W9321 then
reconstructs the digital speech signal into an analog signal using the 32K ADPCM decoder before
sending this analog signal to the speaker.
ADPCM
Voice Codec
W9321
Spread Spectrum Transceiver
SST W9330F
Microprocessor
W921E880F
Microphon
e
Speaker
RF Module
WHT9362
Antenna
Figure 5-2 System Diagram for Cordless Phone Application
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PDF描述 |
|---|---|
| W9330F | Code Division Spread Spectrum Cordless Telephone Controller(具有編碼分劃和擴展頻普技術(shù)的無繩電話控制器) |
| W934GD5V | THE GREEN SOURCE COLOR DEVICES ARE MADE WITH GALLIUM PHOSPHIDE GREEN LIGHT EMITTING DIODE |
| W93902 | POCSAG Decoder For Pagers(尋呼機的POCSAG 解碼器) |
| W93910 | ERMES(Enhanced Radio Emessage System) Paging Protcol Decoder(增強的無線電子信息系統(tǒng)尋呼解碼器) |
| W942508CH | 8M x 4 BANKS x 8 BIT DDR SDRAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W9322-ZC158 | 制造商:Winslow Adaptics Ltd 功能描述:20 pin PLCC plug - height 9.3mm |
| W9322-ZC160 | 制造商:Winslow Adaptics Ltd 功能描述:20 pin PLCC plug - height 7.2mm |
| W9323 | 制造商:Performance Tool 功能描述:Two Piece Camo Knife Gift Set 制造商:Winslow Adaptics Ltd 功能描述:28 way surface mount PLCC plug |
| W9323/W9335 | 制造商:PERFORMANCE TOOLS 功能描述:2 PIECE CAMO KNIFE GIFT SET |
| W9323-ZC158 | 制造商:Winslow Adaptics Ltd 功能描述:28 pin PLCC plug - height 9.3mm |
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