Cube-466_linux small computer

Based on Allwinner h5, with a DDR3 onboard

Onboard resources/interfaces:

Up to 8Gb DDR3 DRAM

SD Card x 1

HDMI 1.4 x 1

USB2.0x2

Type-C USB & UART (The serial port needs to use the " Cube-101_esp-tool burning and debugging tool " and insert it into the TYPE-C port forward)

Q group 565264047 Welcome to play~

If you need cooperation, please contact the email root@an-ye.top

Version update instructions

2022.06.21 Ver0.2 : Modify all traces with equal length spacing of 10mil to 15mil spacing. The original designed 10mil pitch impedance line cannot be compensated by the JLC process.

2022.06.24 Ver0.3 : Modify the differential line length and add some filter wires

2022.06.27 Ver0.4 : If you are using the previous version, please note that R16 and R17 at the DRAM power supply need to be interchanged. This has been fixed.

2022.07.04 Ver0.5 : Modify the resistance at HDMI_HHPD

Be careful with the board layout, the JLC four-layer structure has been changed, the impedance may not match

It has been confirmed that JLC2313 is the same as JLC04161H-3313, so you can make boards with confidence

Troubleshooting Manual

0x00: Severe fever/abnormal power supply

Solution: Measure the resistance of each power supply to ground, check whether there is a short circuit, and check whether the active crystal oscillator is used incorrectly. R16 and R17 need to be swapped before the " 2022.06.27 Ver0.4 " version.

0x01: The crystal oscillator does not vibrate

Solution: Congratulations~ H5 is not attached properly, please rework and plant again.

0x02: DRAM not recognized

Solution: Check whether the DRAM is attached backwards, whether the DRAM is damaged, and check whether the H5 is attached properly.

0x03: DRAM frequency cannot be increased

Solution: Check whether the DRAM model supports this frequency. Note that the CLK frequency requires /2, or modify uboot to reduce the frequency.

0x04: H5 CPU power supply abnormality

Solution: H5 needs to be attached to the 0R resistor at CPU_FB. H3 and H2 do not need to be attached.

If you encounter other weird problems, please add them.

DDR address and control lines are 1290mil equal length, +-100mil

DDR data cable is 1000mil equal length, +-10mil

• CPU: Quad-core ARM CortexTM-A53 processor, a power-saving ARM v8 architecture with 64-bit and 32-bit execution states, scalable high performance, including a NEON multimedia processing engine.
  

• GPU: Six-core ARM Mali450 GPU, including dual geometry processor (GP) and quad pixel processor (PP), providing users with excellent video playback and mainstream gaming experience; supports OpenGL ES2.0 and OpenVG1.1 standards
  

• Video Engine: H5 provides dedicated hardware for multi-format high-definition video codecs, including 4K@30fps H.265 decoder, 4K@30fps H.264 decoder, 1080p@60fps MPEG1/2/4 decoder, VP8/ AVS extremely accurate decoder 1080p@60fps, VC1 decoder 1080p@30fps, H.264 encoder 1080p@60fps