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    參數(shù)資料
    型號: M38D29GFFP
    元件分類: 微控制器/微處理器
    英文描述: 8-BIT, FLASH, 6.25 MHz, MICROCONTROLLER, PQFP64
    封裝: 14 X 14 MM, 0.80 MM PITCH, PLASTIC, LQFP-64
    文件頁數(shù): 79/138頁
    文件大?。?/td> 2880K
    代理商: M38D29GFFP
    Rev.3.02
    Apr 10, 2008
    Page 43 of 131
    REJ03B0177-0302
    38D2 Group
    Fig. 35 Structure of serial I/O related registers
    b7
    b0
    b7
    b0
    b7
    b0
    BRG count source selection bit (CSS)
    0:
    φSOURCE
    1:
    φSOURCE/4
    Serial I/O synchronous clock selection bit (SCS)
    0: BRG output divided by 4 when clock synchronous
    serial I/O is selected.
    BRG output divided by 16 when UART is selected.
    1: External clock input when clock synchronous serial
    I/O is selected.
    External clock input divided by 16 when UART is selected.
    SRDY output enable bit (SRDY)
    0: P57 [P30] pin operates as ordinary I/O pin
    1: P57 [P30] pin operates as SRDY output pin
    Transmit interrupt source selection bit (TIC)
    0: Interrupt when transmit buffer has emptied
    1: Interrupt when transmit shift operation is completed
    Transmit enable bit (TE)
    0: Transmit disabled
    1: Transmit enabled
    Receive enable bit (RE)
    0: Receive disabled
    1: Receive enabled
    Serial I/O mode selection bit (SIOM)
    0: Clock asynchronous (UART) serial I/O
    1: Clock synchronous serial I/O
    Serial I/O enable bit (SIOE)
    0: Serial I/O disabled
    (pins P54 [P30] to P57 [P33] operate as ordinary I/O pins)
    1: Serial I/O enabled
    (pins P54 [P30] to P57 [P33] operate as serial I/O pins)
    Transmit buffer empty flag (TBE)
    0: Buffer full
    1: Buffer empty
    Receive buffer full flag (RBF)
    0: Buffer empty
    1: Buffer full
    Transmit shift completion flag (TSC)
    0: Transmit shift in progress
    1: Transmit shift completed
    Overrun error flag (OE)
    0: No error
    1: Overrun error
    Parity error flag (PE)
    0: No error
    1: Parity error
    Framing error flag (FE)
    0: No error
    1: Framing error
    Summing error flag (SE)
    0: (OE) U (PE) U (FE)=0
    1: (OE) U (PE) U (FE)=1
    Not used (returns “1” when read)
    Serial I/O control register
    (SIO1CON : address 001A16)
    [SIO2CON : address 001F16]
    Serial I/O status register
    (SIO1STS : address 001916)
    [SIO2STS : address 001E16]
    Character length selection bit (CHAS)
    0: 8 bits
    1: 7 bits
    Parity enable bit (PARE)
    0: Parity checking disabled
    1: Parity checking enabled
    Parity selection bit (PARS)
    0: Even parity
    1: Odd parity
    Stop bit length selection bit (STPS)
    0: 1 stop bit
    1: 2 stop bits
    P55/TXD1 [P32/TxD2] P-channel output disable bit (POFF)
    0: CMOS output (in output mode)
    1: N-channel open drain output (in output mode)
    Not used (return “1” when read)
    UART control register
    (UART1CON : address 001B16)
    [UART2CON : address 0FF116]
    ( ) : For Serial I/O1
    [ ] : For Serial I/O2
    φ SOURCE: represents the supply source of internal clock φ.
    XIN input: in the frequency/2, 4 or 8 mode,
    Internal on-chip oscillator divided by 4 in the on-chip
    oscillator mode, and Sub clock in the low-speed mode.
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