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CP3SP33SMS/NOPB Datasheet(PDF) 269 Page - Texas Instruments |
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CP3SP33SMS/NOPB Datasheet(HTML) 269 Page - Texas Instruments |
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269 / 407 page ![]() 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 Sample Sample Sample DATA (LSB) STARTBIT DATABIT DS061 TXD Transmitter Control and Error Detection Parity Generator/Checker RXD Receiver CKX Baud Rate Generator Baud Clock Baud Clock PCLK Clock DS345 RTS CTS Flow Control Logic CP3SP33 www.ti.com SNOSCW5 – MAY 2013 Data bits are sensed by taking a majority vote of three samples latched near the midpoint of each baud (bit time). Normally, the position of the samples within the baud is determined automatically, but software can override the automatic selection by setting the USMD bit in the UnMDSL2 register and programming the UnSPOS register. Serial data input on the RXDn pin is shifted into the RSFT register. On receiving the complete character, the contents of the RSFT register are copied into the UnRBUF register and the Receive Buffer Full bit (URBF) is set. The URBF bit is automatically cleared when software reads the character from the URBUF register. The RSFT register is not software accessible. Figure 27-1. UART Block Diagram Figure 27-2. UART Asynchronous Communication Copyright © 2013, Texas Instruments Incorporated Dual/Quad UART 269 Submit Documentation Feedback Product Folder Links :CP3SP33 |
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