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MEC1322 Datasheet(PDF) 323 Page - Microchip Technology |
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MEC1322 Datasheet(HTML) 323 Page - Microchip Technology |
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323 / 456 page  2014 - 2015 Microchip Technology Inc. DS00001719D-page 323 MEC1322 27.12.3 SPI STATUS REGISTER 1BIOEN Bidirectional Output Enable control. When the SPI is configured for Half Duplex mode or Dual Mode the SPDOUT pin operates as a bi- directional signal. The BIOEN bit is used by the internal DIRECTION bit to control the direction of the SPDOUT buffers. The direction of the buffer is never changed while a byte is being transmitted. 1=The SPDOUT_Direction signal configures the SPDOUT signal as an output. 0=The SPDOUT_Direction signal configures the SPDOUT signal as an input. See Section 27.10.4, "How BIOEN Bit Controls Direction of SPD- OUT Buffer" for details on the use of BIOEN. R/W 1h VCC1_R ESET 0 LSBF Least Significant Bit First 1= The data is transferred in LSB-first order. 0= The data is transferred in MSB-first order. (default) R/W 0h VCC1_R ESET Offset 08h Bits Description Type Default Reset Event 31:3 Reserved R - - 2ACTIVE R 0h VCC1_R ESET 1 RXBF Receive Data Buffer Full status. When this bit is ‘1’ the Rx_Data buf- fer is full. Reading the SPI RX_Data Register clears this bit. This sig- nal may be used to generate a SPI_RX interrupt to the EC. 1=RX_Data buffer is full 0=RX_Data buffer is not full R 0h VCC1_R ESET 0 TXBE Transmit Data Buffer Empty status. When this bit is ‘1’ the Tx_Data buffer is empty. Writing the SPI TX_Data Register clears this bit. This signal may be used to generate a SPI_TX interrupt to the EC. 1=TX_Data buffer is empty 0=TX_Data buffer is not empty R 1h VCC1_R ESET Offset 00h Bits Description Type Default Reset Event |
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