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TMP86CS49UG bảng dữ liệu(PDF) 207 Page - Toshiba Semiconductor |
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TMP86CS49UG bảng dữ liệu(HTML) 207 Page - Toshiba Semiconductor |
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207 / 252 page ![]() Page 193 TMP86CS49UG Figure 15-15 Example of Transmit/Receive (Transmit) Error Processing (b) Receive errors Receive errors occur on the following situation. To protect SIO2RDB and the shift register contents, the received data is ignored while the SIO2SR<RXERR> is “1”. • Shift operation is finished before reading out received data from SIO2RDB at SIO2SR<RXF> is “1” in an external clock operation. If receive error occurs, set the SIO2CR<SIOS> to “0” for reading the data that received immediately before error occurence. And read the data from SIO2RDB. Data in shift register (at errors occur) can be read by reading the SIO2RDB again. When SIO2SR<RXERR> is cleared to “0” after reading the received data, SIO2SR<RXF> is cleared to “0”. After clearing SIO2CR<SIOS> to “0”, when 8-bit serial clock is input to SCK2 pin, re- ceive operation is stopped. To restart the receive operation, confirm that SIO2SR<SIOF> is cleared to “0”. If the received error occurs, set the SIO2CR<SIOINH> to “1” for stopping the receive operation immediately. In this case, SIO2CR<SIOS>, SIO2SR register, SIO2RDB reg- ister and SIO2TDB register are initialized. Writing transmit data B Writing transmit data A Unknown B A7 A6 A A5 A4 A3 A2 A1 A0 B7 B6 B5 B4 B3 B2 B1 B0 D7 D6 D5 D4 D3 D2 D1 D0 E7 E6 E5 E4 E3 E2 E1 E0 F7 F6 F5 F4 F3 F2 F1 F0 Start shift operation Start shift operation Start shift operation Reading received data F Reading received data E Reading received data D F E D SIO2CR<SIOS> SIO2SR<SIOF> SIO2SR<SEF> SCK2 pin output SO2 pin SI2 pin INTSIO2 interrupt request SIO2SR<TXF> SIO2SR<RXF> SIO2RDB SIO2TDB SIO2SR<TXERR> SIO2CR<SIOINH> |
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