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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST90135 датащи(PDF) 160 Page - STMicroelectronics |
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ST90135 датащи(HTML) 160 Page - STMicroelectronics |
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160 / 190 page  160/190 ST90158 - SERIAL COMMUNICATIONS INTERFACE (SCI) SERIAL COMMUNICATIONS INTERFACE (Cont’d) RECEIVER BUFFER REGISTER (RXBR) R248 - Read only Reset value: undefined Bit 7:0 = RD[7:0]: Received Data. This register stores the data portion of the re- ceived word. The data will be transferred from the Receiver Shift Register into the Receiver Buffer Register at the end of the word. All receiver inter- rupt conditions will be updated at the time of trans- fer. If the selected character format is less than 8 bits, unused most significant bits will forced to “1”. Note: RXBR and TXBR are two physically differ- ent registers located at the same address. TRANSMITTER BUFFER REGISTER (TXBR) R248 - Write only Reset value: undefined Bit 7:0 = TD[7:0]: Transmit Data. The ST9 core will load the data for transmission into this register. The SCI will transfer the data from the buffer into the Shift Register when availa- ble. At the transfer, the Transmitter Buffer Register interrupt is updated. If the selected word format is less than 8 bits, the unused most significant bits are not significant. Note: TXBR and RXBR are two physically differ- ent registers located at the same address. 70 RD7 RD6 RD5 RD4 RD3 RD2 RD1 RD0 70 TD7 TD6 TD5 TD4 TD3 TD2 TD1 TD0 9 |
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