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): 38/74頁
文件大?。?/td> 2620K
代理商: PEF2080
Semiconductor Group
39
Operational Description
In NT mode the IOM interface is activated by the upstream unit turning on the clocking signals.
Simultaneously the upstream unit must send the desired command in the C/l channel. In the case
where activation is requested from a terminal, the NT SBC first requests timing on the IOM interface
by pulling SDO to a static low level. The SBC enters the power-up state immediately after timing
has been applied. The clock signals may be switched off after the code Deactivation Indication
Downstream has been sent twice by the upstream unit.
Figure 21
Activation of the IOM
Interface
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