參數(shù)資料
型號: EM78810
廠商: ELAN Microelctronics Corp .
英文描述: 8-Bit Micro-Controller for Telecom Product(工作電壓2.5V-6V的8位呼叫識別的RISC型微控制器)
中文描述: 8位微控制器的電信產(chǎn)品(工作電壓為2.5V到6V的8位呼叫識別的的RISC型微控制器)
文件頁數(shù): 29/31頁
文件大?。?/td> 191K
代理商: EM78810
29
* This specification are subject to be changed without notice.
9.30.1997
EM78810
8-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT
TIP/RING
/RING TIME
/RD
/CD
DATA
OSC
FIRST RING
2 SECONDS
0.5 SEC
0.5 SEC
SECOND RING
2 SECONDS
DATA
3.58 MHz
Tcdl
POWER
Tosc
Tdoc
Tpd
Tsup
Tcdh
Trd
Fig.21 FSK Power Down Mode Timing Diagram
FSK format
There are some difference on singal spec. between Bell 202 and ITU-T V.23
Item
Mark freq. (logic 1)
Space freq. (logic 0)
Transmission rate
Data format
Serial, asynchronous
Modulation type
analog phase coherent FSK
Bell 202
1200
±
1%
2200
±
1%
1200 bps
ITU-T V.23
1300
±
1.5%
2100
±
1.5%
1200 bps
Serial, asynchronous
analog phase coherent FSK
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