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TMP86FS49AIUG 数据表(PDF) 173 Page - Toshiba Semiconductor |
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TMP86FS49AIUG 数据表(HTML) 173 Page - Toshiba Semiconductor |
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173 / 296 page ![]() Page 157 TMP86FS49AIUG Figure 13-9 Generation of Transmit Data Buffer Empty 13.9.6 Transmit End Flag When data are transmitted and no data is in TD2BUF (UART2SR<TBEP> = “1”), transmit end flag UART2SR<TEND> is set to “1”. The UART2SR<TEND> is cleared to “0” when the data transmit is stated after writing the TD2BUF. Figure 13-10 Generation of Transmit End Flag and Transmit Data Buffer Empty Shift register Data write Data write zzzz xxxx yyyy Start Bit 0 Final bit Stop 1xxxx0 *****1 *1xxxx ****1x *****1 1yyyy0 TD2BUF TXD2 pin UART2SR<TBEP> INTTXD2 interrupt After reading UART2SR writing TD2BUF clears TBEP. Shift register *1yyyy ***1xx ****1x *****1 Stop Start 1yyyy0 Bit 0 TXD2 pin UART2SR<TBEP> UART2SR<TEND> INTTXD2 interrupt Data write for TD2BUF |
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