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參數資料
型號: W6691
廠商: WINBOND ELECTRONICS CORP
英文描述: ISDN S/T Interface Transceiver
中文描述: 綜合業務數字網的S / T接口收發器
文件頁數: 33/106頁
文件大小: 428K
代理商: W6691
Preliminary W6691
Publication Release Date: Sep 2001
33 Revision 1.1
Single alternating 2KHz pulses are sent.
TABLE 7.4 LAYER 1 COMMAND CODES
Command
Symbol Code
Description
Deactivate down request
DDR
0000
Deactive Layer1 and disable internal clocks
Send continuous pulses
SCP
0011
Send continuous pulses at 96 kHz
Send single pulses
SSP
0010
Send isolated pulses at 2 kHz
Activate request downstream ARD
1000
Request Layer1 activate Info2/Info4 sent
Deactivate request assure
DRA
1111
Layer2 reponses Deactivate acknowledgement to make
sure Layer1 can be deativate
RESET
RST
0001
Initialize to G4 or G1 state
TABLE 7.5 LAYER 1 INDICATION CODES
Indication
Symbol Code
Descriptions
Signal synchronize
SSYU
0100
Received signal is not Info3 and try to re-synchronize
again
Activate request Indication
upstream
ARIU
1000
the INFO 1 signal detected is responsed to Layer2.
Activate indication upstream AIU
1100
Synchronous receiver
Deactivate request indication
upstream
DRIU
1111
1. Timer2 expired
2.
info 0 received during 25ms after deactivation
request command
RESET Indication
RSTI
0001
Reset state indication
Test Indication
TI
0000
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