參數(shù)資料
    

    


    


    
型號(hào)：
MC68HC705JB2DW

    

    
廠商：
FREESCALE SEMICONDUCTOR INC

    

    
元件分類(lèi)：
微控制器/微處理器

    

    
英文描述：
8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PDSO20

    

    
封裝：
SOIC-20

    

    
文件頁(yè)數(shù)：
119/128頁(yè)

    

    
文件大小：
2493K

    

    
代理商：
MC68HC705JB2DW


    

    

    

	
    
    
    
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    GENERAL RELEASE SPECIFICATION
    August 28, 1998
    UNIVERSAL SERIAL BUS MODULE
    MC68HC705JB2
    10-22
    REV 1.1
    EOPFR — End of Packet Flag Reset
    Writing a logic 1 to this write only bit will clear the EOPF bit if it is set. Writing a
    logic 0 to the EOPFR has no effect. Reset clears this bit.
    10.5.4 USB Control Register 0 (UCR0)
    T0SEQ — Endpoint 0 Transmit Sequence Bit
    This read/write bit determines which type of data packet (DATA0 or DATA1) will
    be sent during the next IN transaction. Toggling of this bit must be controlled by
    software. Reset clears this bit.
    1 =
    DATA1 Token active for next Endpoint 0 transmit
    0 =
    DATA0 Token active for next Endpoint 0 transmit
    STALL0 — Endpoint 0 Force Stall Bit
    This read/write bit causes Endpoint 0 to return a STALL handshake when
    polled by either an IN or OUT token by the USB Host Controller. The USB
    hardware clears this bit when a SETUP token is received. Reset clears this bit.
    1 =
    Send STALL handshake
    0 =
    Default
    TX0E — Endpoint 0 Transmit Enable
    This read/write bit enables a transmit to occur when the USB Host controller
    sends an IN token to Endpoint 0. Software should set this bit when data is
    ready to be transmitted. It must be cleared by software when no more Endpoint
    0 data needs to be transmitted.
    If this bit is 0 or the TXD0F is set, the USB will respond with a NAK handshake
    to any Endpoint 0 IN tokens. Reset clears this bit.
    1 =
    Data is ready to be sent.
    0 =
    Data is not ready. Respond with NAK.
    RX0E — Endpoint 0 Receive Enable
    This read/write bit enables a receive to occur when the USB Host controller
    sends an OUT token to Endpoint 0. Software should set this bit when data is
    ready to be received. It must be cleared by software when data cannot be
    received.
    If this bit is 0 or the RXD0F is set, the USB will respond with a NAK handshake
    to any Endpoint 0 OUT tokens. Reset clears this bit.
    1 =
    Data is ready to be received.
    0 =
    Not ready for data. Respond with NAK.
    Bit 7
    Bit 6
    Bit 5
    Bit 4
    Bit 3
    Bit 2
    Bit 1
    Bit 0
    UCR0
    R
    T0SEQ
    STALL0
    TX0E
    RX0E
    TP0SIZ3 TP0SIZ2 TP0SIZ1 TP0SIZ0
    $003B
    W
    reset
    00000000
    Figure 10-23. USB Control Register 0 (UCR0)
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    Freescale Semiconductor, Inc.
    For More Information On This Product,
    Go to: www.freescale.com
    n
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    .
    
    
    
    
    
    


    


    

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    相關(guān)代理商/技術(shù)參數(shù)
    		

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 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述:

    

    
MC68HC705JJ7CDW
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MC68HC705JP7CDW
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