Info and dmesg of blue mp3 player from aliexpress (if it is useful) #11
Description
This MP3 player: https://www.aliexpress.com/item/1005007914252331.html
[14464.123044] usb 1-8.1: USB disconnect, device number 9
[15022.356140] usb 1-8.1: new full-speed USB device number 10 using xhci_hcd
[15022.863262] usb 1-8.1: device descriptor read/64, error -71
[15023.050829] usb 1-8.1: New USB device found, idVendor=4c4a, idProduct=3435, bcdDevice= 1.00
[15023.050843] usb 1-8.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[15023.050846] usb 1-8.1: Product: UACDemoV1.0
[15023.050849] usb 1-8.1: Manufacturer: Jieli Technology
[15023.062120] input: Jieli Technology UACDemoV1.0 as /devices/pci0000:00/0000:00:15.0/usb1/1-8/1-8.1/1-8.1:1.2/0003:4C4A:3435.0004/input/input14
[15023.114888] hid-generic 0003:4C4A:3435.0004: input,hidraw3: USB HID v2.01 Device [Jieli Technology UACDemoV1.0] on usb-0000:00:15.0-8.1/input2
[15023.115046] usb-storage 1-8.1:1.3: USB Mass Storage device detected
[15023.115923] scsi host3: usb-storage 1-8.1:1.3
[15023.163098] mc: Linux media interface: v0.10
[15023.221481] usbcore: registered new interface driver snd-usb-audio
[15024.141142] scsi 3:0:0:0: Direct-Access UC03 UDISK OTP 1.00 PQ: 0 ANSI: 2
[15024.142515] sd 3:0:0:0: Attached scsi generic sg2 type 0
[15024.145896] sd 3:0:0:0: [sdc] 7744512 512-byte logical blocks: (3.97 GB/3.69 GiB)
[15024.146168] sd 3:0:0:0: [sdc] Write Protect is off
[15024.146175] sd 3:0:0:0: [sdc] Mode Sense: 03 00 00 00
[15024.146363] sd 3:0:0:0: [sdc] No Caching mode page found
[15024.146370] sd 3:0:0:0: [sdc] Assuming drive cache: write through
[15024.167928] sdc: sdc1
[15024.168194] sd 3:0:0:0: [sdc] Attached SCSI removable disk
Interesting part is that when I connect it for the first time and press play button (on this mp3 player), it will trigger XF86AudioPlay key and my PC starts playing (not this gadget). It works as usb disk afterwards.
Chip markings: JL C085083A AD162B0
SOIC-8 is 8002D amplifier for the mini speaker
SOT-23s are 1AM (NPN 2N3904)
Pinout:
- to sd card
- to sd card
- to sd card
- usb data pin
- usb data pin
- ? probably key pin
- ? probably key pin
- ? probably key pin
- gnd
- left audio
- right audio
- ?
- gnd
- vcc (+bat)
- vcc (+bat)
- usb +5V