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參數資料
型號: W93910
廠商: WINBOND ELECTRONICS CORP
元件分類: 尋呼電路
英文描述: ERMES(Enhanced Radio Emessage System) Paging Protcol Decoder(增強的無線電子信息系統尋呼解碼器)
中文描述: TELECOM, PAGING DECODER, PDSO28
封裝: SSOP-28
文件頁數: 13/35頁
文件大小: 267K
代理商: W93910
W93910
Publication Release Date: Auguest 1999
- 13 - Revision A1
LOCK MODE
In lock mode, the decoder will stay at the same channel. If matching addresses appear, all the available
paging messages will be received until messages are finished or time out occurs.
PLEN
receiving message
no message
Figure 6. Lock Mode
Decoder
channel
The above example shows the home channel of the pager is
channel 9 (CH3-CH0 = 1001) and pager locks to channel 7.
uC
internal
channel
PLL freq.
synthesizer
channel
9
7
9
9
7
3
5
7
Tpll:uC change frequency synthesizer counter
7
5
9
7
7
5
9
9
7
7
due to PLEN active edge
due to XCNCG rising
9
7
9
Txcncg:XCNCG pulse
9
XCNCG
ON
PLEN
Top
Status
Lock mode
Channel scanning mode
Lock mode
Figure 7. Channel Scan mode and lock mode
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