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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMP320C2811PBKA датащи(PDF) 71 Page - Texas Instruments |
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TMP320C2811PBKA датащи(HTML) 71 Page - Texas Instruments |
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71 / 147 page  Peripherals 71 June 2004 SPRS257 • Baud rate programmable to 64K different rates − Baud rate = LSPCLK (BRR ) 1) * 8 , when BRR ≠ 0 = LSPCLK 16 , when BRR = 0 Serial port performance is limited by I/O buffer switching speed. Internal prescalers must be adjusted such that the peripheral speed is less than the I/O buffer speed limit—20 MHz maximum. • Data-word format − One start bit − Data-word length programmable from one to eight bits − Optional even/odd/no parity bit − One or two stop bits • Four error-detection flags: parity, overrun, framing, and break detection • Two wake-up multiprocessor modes: idle-line and address bit • Half- or full-duplex operation • Double-buffered receive and transmit functions • Transmitter and receiver operations can be accomplished through interrupt-driven or polled algorithms with status flags. − Transmitter: TXRDY flag (transmitter-buffer register is ready to receive another character) and TX EMPTY flag (transmitter-shift register is empty) − Receiver: RXRDY flag (receiver-buffer register is ready to receive another character), BRKDT flag (break condition occurred), and RX ERROR flag (monitoring four interrupt conditions) • Separate enable bits for transmitter and receiver interrupts (except BRKDT) • Max bit rate + 150 MHz 2 8 + 9.375 106 b s • NRZ (non-return-to-zero) format • Ten SCI module control registers located in the control register frame beginning at address 7050h All registers in this module are 8-bit registers that are connected to Peripheral Frame 2. When a register is accessed, the register data is in the lower byte (7−0), and the upper byte (15−8) is read as zeros. Writing to the upper byte has no effect. Enhanced features: • Auto baud-detect hardware logic • 16-level transmit/receive FIFO |
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