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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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H8S/2225 数据表(PDF) 599 Page - Renesas Technology Corp |
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H8S/2225 数据表(HTML) 599 Page - Renesas Technology Corp |
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599 / 1071 page  Section 14 IEBus™ Controller (IEB) [H8S/2258 Group] Rev. 5.00 Aug 08, 2006 page 513 of 982 REJ09B0054-0500 Bit Bit Name Initial Value R/W Description 5 SRQ 0 R Slave Transmission Request Indicates whether or not the unit is in transmit request status as a slave unit. 1: The unit is in transmit request status as a slave unit [Setting condition] When the CMX flag is cleared to 0 after the slave transmit request command is issued. 0: The unit is not in transmit request status as a slave unit [Clearing condition] When a slave transmission has been completed. 4 SRE 0 R Slave Receive Status Indicates the execution status in slave/broadcast reception. 1: Slave/broadcast reception is being executed [Setting condition] When the slave/broadcast reception is started while the RE bit in IECTR is set to 1. 0: Slave/broadcast reception is not being executed [Clearing condition] When the slave/broadcast reception has been completed. 3 LCK 0 R Lock Status Indication Set to 1 when a unit is locked by a lock request from the master unit. IELA1 and IELA2 values are valid only when this flag is set to 1. 1: A unit is locked [Setting condition] When data for the number of bytes specified by the message length is not received after the control bits that make the unit locked are received from the master unit. (The LCK flag is set to 1 only when the message length exceeds the maximum number of transfer bytes in one frame. This flag is not set by completion of other errors.) 0: A unit is unlocked [Clearing condition] When an unlock condition is satisfied or when an unlock command is issued. |
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