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DA14582 Datasheet(PDF) 57 Page - Dialog Semiconductor |
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DA14582 Datasheet(HTML) 57 Page - Dialog Semiconductor |
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57 / 172 page  Datasheet Revision 3.0 08-Nov-2016 CFR0011-120-01 57 of 172 © 2015 Dialog Semiconductor DA14582 Bluetooth Low Energy 4.2 SoC with Audio CODEC FINAL 7:0 r/w SRBR_STHRX Shadow Receive Buffer Register x: This is a shadow register for the RBR and has been allocated sixteen 32-bit locations so as to accommodate burst accesses from the master. This register contains the data byte received on the serial input port (sin) in UART mode or the serial infrared input (sir_in) in infrared mode. The data in this register is valid only if the Data Ready (DR) bit in the Line status Register (LSR) is set. If FIFOs are disabled (FCR[0] set to zero), the data in the RBR must be read before the next data arrives, otherwise it will be overwritten, resulting in an overrun error. If FIFOs are enabled (FCR[0] set to one), this register accesses the head of the receive FIFO. If the receive FIFO is full and this regis- ter is not read before the next data character arrives, then the data already in the FIFO will be preserved but any incoming data will be lost. An overrun error will also occur. Shadow Transmit Holding Register 0: This is a shadow reg- ister for the THR and has been allocated sixteen 32-bit loca- tions so as to accommodate burst accesses from the master. This register contains data to be transmitted on the serial output port (sout) in UART mode or the serial infrared output (sir_out_n) in infrared mode. Data should only be written to the THR when the THR Empty (THRE) bit (LSR[5]) is set. If FIFO's are disabled (FCR[0] set to zero) and THRE is set, writing a single character to the THR clears the THRE. Any additional writes to the THR before the THRE is set again causes the THR data to be overwritten. If FIFO's are enabled (FCR[0] set to one) and THRE is set, x number of characters of data may be written to the THR before the FIFO is full. The number x (default=16) is determined by the value of FIFO Depth that you set during configuration. Any attempt to write data when the FIFO is full results in the write data being lost. 0x0 Table 65: UART_SRBR_STHR11_REG (0x5000105C) Bit Mode Symbol Description Reset Table 66: UART_SRBR_STHR12_REG (0x50001060) 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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