參數(shù)資料
型號: PEF2080
廠商: SIEMENS AG
英文描述: S/T Bus Interface Circuit(SBC)
中文描述: S / T的總線接口電路(SBC)的
文件頁數(shù): 49/74頁
文件大?。?/td> 2620K
代理商: PEF2080
Semiconductor Group
50
Operational Description
Commands / Indications and State Diagrams in NT
Table 4
(x) unconditional commands
Command (downstream)
Deactivate request
Abbr.
DR
Code
0000
Remark
(x)
Resynchronization of
U-interface
RSYD
0100
Transmission of pseudo-ternary pulses at
96-kHz frequency after loss of synchronism of
the U interface
Activate request
ARD
1000
Transmission of info 2
Activate request loop
ARL
1010
Transmission of info 2, switching of test loop 2
Deactivate indication
DID
1111
Deactivation acknowledgement, quiscent state
Activate indication
AID
1100
Transmission of info 4
Activate indication loop
AIL
1110
Transmission of info 4, switching of test loop 2
Send single zeros
SSZ
0010
Transmission of pseudo-ternary pulses at
2-kHz frequency (x)
Indication (upstream)
Abbr.
Code
Remark
Timing
TIM
0000
SBC requires clock pulses
Lost signal level
LSL
0001
No receive level
Lost framing
RSYU
0100
Receiver is not synchronous
Error indication
EI
0110
RST and SCZ both active
Activate request
ARU
1000
Info 1 received
Activate indication
AIU
1100
Synchronous receiver
Deactivate indication
DIU
1111
Timer (32 ms) expired or info 0 received (during
16 ms) after deactivation request
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