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      參數(shù)資料
      型號: C8051F005-TB
      廠商: Silicon Laboratories Inc
      文件頁數(shù): 33/171頁
      文件大?。?/td> 0K
      描述: BOARD PROTOTYPING W/C8051F005
      標準包裝: 1
      類型: MCU
      適用于相關(guān)產(chǎn)品: C8051F005
      所含物品:
      C8051F000/1/2/5/6/7
      C8051F010/1/2/5/6/7
      Figure 17.6. SPI0CN: SPI Control Register
      R/W
      R
      R/W
      Reset Value
      SPIF
      WCOL
      MODF
      RXOVRN
      TXBSY
      SLVSEL
      MSTEN
      SPIEN
      00000000
      Bit7
      Bit6
      Bit5
      Bit4
      Bit3
      Bit2
      Bit1
      Bit0
      SFR Address:
      (bit addressable)
      0xF8
      Bit7:
      SPIF: SPI Interrupt Flag.
      This bit is set to logic 1 by hardware at the end of a data transfer. If interrupts are enabled,
      setting this bit causes the CPU to vector to the SPI0 interrupt service routine. This bit is
      not automatically cleared by hardware. It must be cleared by software.
      Bit6:
      WCOL: Write Collision Flag.
      This bit is set to logic 1 by hardware (and generates a SPI interrupt) to indicate a write to
      the SPI data register was attempted while a data transfer was in progress. It is cleared by
      software.
      Bit5:
      MODF: Mode Fault Flag.
      This bit is set to logic 1 by hardware (and generates a SPI interrupt) when a master mode
      collision is detected (NSS is low and MSTEN = 1). This bit is not automatically cleared by
      hardware. It must be cleared by software.
      Bit4:
      RXOVRN: Receive Overrun Flag.
      This bit is set to logic 1 by hardware (and generates a SPI interrupt) when the receive
      buffer still holds unread data from a previous transfer and the last bit of the current transfer
      is shifted into the SPI shift register. This bit is not automatically cleared by hardware. It
      must be cleared by software.
      Bit3:
      TXBSY: Transmit Busy Flag.
      This bit is set to logic 1 by hardware while a master mode transfer is in progress. It is
      cleared by hardware at the end of the transfer.
      Bit2:
      SLVSEL: Slave Selected Flag.
      This bit is set to logic 1 whenever the NSS pin is low indicating it is enabled as a slave. It
      is cleared to logic 0 when NSS is high (slave disabled).
      Bit1:
      MSTEN: Master Mode Enable.
      0: Disable master mode. Operate in slave mode.
      1: Enable master mode. Operate as a master.
      Bit0:
      SPIEN: SPI Enable.
      This bit enables/disables the SPI.
      0: SPI disabled.
      1: SPI enabled.
      Rev. 1.7
      128
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