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DA14582 Datasheet(PDF) 72 Page - Dialog Semiconductor |
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DA14582 Datasheet(HTML) 72 Page - Dialog Semiconductor |
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72 / 172 page  Datasheet Revision 3.0 08-Nov-2016 CFR0011-120-01 72 of 172 © 2015 Dialog Semiconductor DA14582 Bluetooth Low Energy 4.2 SoC with Audio CODEC FINAL 3 r UART_FE Framing Error bit. This is used to indicate the occurrence of a framing error in the receiver. A framing error occurs when the receiver does not detect a valid STOP bit in the received data. In the FIFO mode, since the framing error is associated with a character received, it is revealed when the character with the framing error is at the top of the FIFO. When a framing error occurs, the UART tries to resynchro- nize. It does this by assuming that the error was due to the start bit of the next character and then continues receiving the other bit i.e. data, and/or parity and stop. It should be noted that the Framing Error (FE) bit (LSR[3]) is set if a break interrupt has occurred, as indicated by Break Interrupt (BI) bit (LSR[4]). 0 = no framing error 1 = framing error Reading the LSR clears the FE bit. 0x0 2 r UART_PE Parity Error bit. This is used to indicate the occurrence of a parity error in the receiver if the Parity Enable (PEN) bit (LCR[3]) is set. In the FIFO mode, since the parity error is associated with a character received, it is revealed when the character with the parity error arrives at the top of the FIFO. It should be noted that the Parity Error (PE) bit (LSR[2]) is set if a break interrupt has occurred, as indicated by Break Interrupt (BI) bit (LSR[4]). 0 = no parity error 1 = parity error Reading the LSR clears the PE bit. 0x0 1 r UART_OE Overrun error bit. This is used to indicate the occurrence of an overrun error. This occurs if a new data character was received before the previous data was read. In the non-FIFO mode, the OE bit is set when a new charac- ter arrives in the receiver before the previous character was read from the RBR. When this happens, the data in the RBR is overwritten. In the FIFO mode, an overrun error occurs when the FIFO is full and a new character arrives at the receiver. The data in the FIFO is retained and the data in the receive shift register is lost. 0 = no overrun error 1 = overrun error Reading the LSR clears the OE bit. 0x0 0 r UART_DR Data Ready bit. This is used to indicate that the receiver contains at least one character in the RBR or the receiver FIFO. 0 = no data ready 1 = data ready This bit is cleared when the RBR is read in non-FIFO mode, or when the receiver FIFO is empty, in FIFO mode. 0x0 Table 89: UART2_LSR_REG (0x50001114) Bit Mode Symbol Description Reset Table 90: UART2_MSR_REG (0x50001118) Bit Mode Symbol Description Reset 15:8 - - Reserved 0x0 |
Similar Part No. - DA14582_16 |
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Similar Description - DA14582_16 |
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