Rockchip RK32 Series, Hardware Design Manual

Page: 19 / 115

RK3288 Hardware Design Guide
3.4 Silk-screen and Decal

Add PCB name and layout data for searching and debugging;

Add components labels as many as possible for debugging;

Add silk-screen for key signals such as battery solder pins, connector pins, etc.

Add obvious remark for CPU 1st pin, without overlapped or hidden under device;

Make sure component package size is properly within height limit;

Make sure welding direction (especially for sink-style) of interface components like
headset/USB will not have mirror mistakes.

Recommend not to place big components on the reverse side of BGA for double-faced
SMT; All components should be located in slotted area for slotted single-faced SMT.