USB3.0 card reader based on GL3224 solution supports camera SD card

Portal of 3.0 card readers with the same series and board type but different main control solutions↓↓↓↓↓↓↓
Genesys GL3224 solution (white solder mask has been completed and verified) (the project on the current page)
Wangjiu PL2731 solution (black solder mask has been completed and verified)
Refatech NS1081 solution (the hardware has been completed, but the firmware cannot be found)
Genesys GL3233 solution (considering the solution, collecting information)
Realtek RTS5306e (considering the solution, collecting information)
 
····Introduction····
This card reader is made based on the GL3224 solution, supports USB3.0 transmission, supports UHS-I specification SD cards, reserves external Flash pads, and can upgrade the firmware later.
The card reader is tested with Kingston 256G blue card and Samsung ProPlus 128G red card (2019 version), and the reading speed can reach about 90-100M/s.
The PCB proofing is 1mm thick, and the final product is only 4mm thick, which is very thin
 
... Details...
The input uses a Micro-B3.0 interface, and an ordinary mobile hard disk data cable can be used, or you can buy one for a few dollars on Taobao. For long cables, you can buy the original cable of Samsung S5 or Note3.
The SD card slot used in this project fully supports write protection recognition. If the card slot you bought does not support it, you need to manually fly the write protection pin to GND, otherwise you cannot write data normally.
The chip can work normally without welding external Flash, but it cannot update the latest firmware. For Flash usage and suggestions, please refer to the suggestions in the project of @QUARKISME.
Q&A↓
Q Why not use Type C?
A There are many places for adapter chips, which are quite expensive. The full-pin C port is not easy to weld. Moreover, I am a user of both C and Micro-B3.0 devices. The priority is convenience for myself. If you mind, you can change it to C port yourself.
Q Why is there no small TF card version?
A I am a photographer and I only use SD cards, so I didn’t draw a TF card. If you need to, you can add a card adapter and use it.
Q Why not make it a direct A-port?
A The original intention of making this card reader was to avoid having to get up and get close to the chassis to fight with a bunch of interfaces. On my desk, there are always C-port and Micro-B3.0 port cables extending to the keyboard, so I can operate them without getting up. The priority is to make it convenient for myself. If you mind, you can draw an A-port yourself.
 
The Flash part of the circuit refers to the works of @QUARKISME and @an_ye. I would like to express my gratitude!
@QUARKISME’s project contains firmware upgrade files and methods. If you need them, you can go to his project to get them. Thanks again for the compilation and sharing!
 
····Test picture····
 
····BOM picture····
To be added to the PCB later
 
····Actual picture····
 
 
 
 
 
The following actual picture is the old version with write protection (normal function)