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D12_MODE_CONFIG, //发送模式设置
D12_MODE_CLOCK_DIV, //发送分频率模式
others => X"00" );
constant D12_CONNECT_DATA_TYPE: REG8x1:= //命令、数据执行顺序
( D12_COMMAND,
D12_DATA, //发送数据
D12_COMMAND,
D12_DATA, //发送数据
others => '0' );
constant D12_CONNECT_DATA_LENGTH: INTEGER8 := 5; //配置参数总长度
constant D12_EP0_ACK_DATA: REG8x8:= //配置0断点命令
( D12_COMMAND_SEL_EP0_OUT, &nb sp; //发送0断点选择
D12_COMMAND_ACK_SETUP, //确认建立
D12_COMMAND_CLEAR_EP_BUFFER, //清寄存器
D12_COMMAND_SEL_EP0_IN, //接收0断点选择
D12_COMMAND_ACK_SETUP, //确认建立
others => X"00" );
constant D12_EP0_ACK_DATA_LENGTH: INTEGER8 := 5; //配置0断点总长度
constant ep0_ack_data: REG8x8 := D12_EP0_ACK_DATA; //发送0断点数据

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