RK3288 Hardware Design Guide
16 Debug
16.1 Schematic
For convenience of online software debug, RK3288 has reserved a special debug Uart
interface（UART2）; In actual product application, this interface is not suggested to be used
for other functions, design is shown as in Fig 16-1.
Fig 16-1
If level conversion chip RS232 is used, TXD, RXD direction is an important note.
16.2 PCB Layout
If Debug is frequently used （such as for development tools, SDK and etc.），suggest to add
ESD component to protect chip.
Fig 16-2
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