12.2串行I / O相关寄存器........................................... .............................. 12-6

12.2.1 SIO中断相关的寄存器........................................... ........ 12-7

12.2.2 SIO中断控制寄存器........................................... ........ 12-9

12.2.3串口发送控制寄存器........................................... ...... 12-13

12.2.4 SIO传输/接收模式寄存器..................................... 12-15

12.2.5 SIO发送缓冲寄存器........................................... ........ 12-18

12.2.6串口接收缓冲寄存器........................................... ......... 12-19

12.2.7串口接收控制寄存器........................................... 12-20 .......

12.2.8串口波特率寄存器........................................... ............... 12-23

12.3发送操作在CSIO模式............................................ ................ 12-25

12.3.1设置CSIO波特率.......................................... ............ 12-25

12.3.2为CSIO传输....................................... 12-26初始设置

12.3.3启动CSIO传输............................................ .......... 12-28

12.3.4连续CSIO传输............................................ .... 12-28

12.3.5在处理完CSIO传输................................. 12-29

12.3.6发送中断............................................. ......................... 12-29

12.3.7发送DMA传输请求........................................... .... 12-29

12.3.8典型CSIO发送操作........................................... ... 12-31

12.4接收操作在CSIO模式............................................ .................. 12-33

12.4.1为CSIO接收初始设置.......................................... .. 12-33

12.4.2启动CSIO接待............................................ ............... 12-35

12.4.3处理在CSIO接待....................................... 12结束35

12.4.4关于连续接收............................................ ......... 12-36

12.4.5标志指示CSIO的状态接收操作............ 12-37

12.4.6典型CSIO接收操作........................................... .... 12-38

12.5注意事项使用CSIO模式............................................ ................. 12-40

12.6发送操作在UART模式............................................ ............... 12-42

12.6.1设置UART波特率.......................................... ........... 12-42

12.6.2 UART发送/接收数据格式..................................... 12-43

12.6.3对UART发送初始设置...................................... 12-45

12.6.4启动UART传输............................................ ......... 12-47

12.6.5连续UART传输............................................ ... 12-47

12.6.6处理在UART传输结束................................ 12-48

12.6.7发送中断............................................. ......................... 12-48

12.6.8发送DMA传输请求........................................... .... 12-48

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