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參數(shù)資料
| 型號： | W93902 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 尋呼電路 |
| 英文描述： | POCSAG Decoder For Pagers(尋呼機的POCSAG 解碼器) |
| 中文描述： | TELECOM, PAGING DECODER, PDSO24 |
| 封裝： | SSOP-24 |
| 文件頁數(shù)： | 6/22頁 |
| 文件大小： | 244K |
| 代理商： | W93902 |
W93902
- 6 -
If no preamble or synchronization codeword is detected during the first four batches, the chip enters
the second stage, in which 1/3 turn-on time is used every 576 bits (one batch) to detect
synchronization or preamble for 1 to 15 batches, depending on the setting of TD1 to TD3. If a
synchronization codeword is matched during these two stages, the chip enters lock mode. If no
codeword is matched, the chip enters idle mode.
ON
BS1
BS2
BS3
Total 1 to 15 times
4 batches
576 bits
T
BS2
T
BS3
192 bits
Figure 3
Idle Mode
In sync catch mode the chip attempts to achieve synchronization in a short period of time, but the RF
power consumption in this mode is quite high. Consequently if there is no meaningful signal input, the
chip enters idle mode to reduce the power consumption. If a preamble or synchronization codeword is
present, however, it can still be detected by using 1/18 RF turn-on time (T
ON
= 32 bits duration time).
ON
BS1
BS2
BS3
T
BS3
T
BS2
576 bits
32 bits
T
ON
Figure 4
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| 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 |
| W942508CH-5 | 8M x 4 BANKS x 8 BIT DDR SDRAM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W93910 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:ERMES PAGING DECODER |
| W9393 | 制造商:Winslow Adaptics Ltd 功能描述:28/32 way DIL-PLCC plug conversion,W9393 |
| W9395 | 制造商:Winslow Adaptics Ltd 功能描述:40/44 way DIL-PLCC plug conversion,W9395 |
| W93-A112-50 | 制造商:TE Connectivity 功能描述: |
| W93A8AD/SYC/H | 制造商:Kingbright Corporation 功能描述: |
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