Jz4730

A SoC from ingenic. See http://www.ingenic.cn/eng/productServ/App/JZ4730/pfCustomPage.aspx.

Chiplist



IMG 0805.JPG

Skytone

This picture reveals the maker: skytone. I assume we are dealing with the skytone alpha 400: skytone alpha 400 .


IMG 0813.JPG
PS/2->USB bridge and USB hub

csc0101a

Chesen CSC0101A? USB<->PS/2 bridge. http://www.chesen.com.tw/products/pc/pc-0101a.htm The chip is used to connect two PS/2 compatible devices to an USB bus.

Alcorusbhub

The hub is an AU9254. From the alcor website: " AU9254 is an integrated single chip USB hub controller designed for the emerging industry-standard Universal Serial Bus (USB). The AU9254 supports four USB downstream ports. Each downstream port has power switch control, and over-current sensing. " datasheetarchive The fact that each port has power switch control is impressive, and even might come in handy :-).
  • Port 1 is on the right side to the front
  • Port 2 is on the right side to the back
  • Port 3 is internally connected to the chesen PS/2 converter
  • Port 4 is internally available as solderislands on the right back of the motherboard, near the clamshell hinge.


IMG 0814.JPG

Realtek RTL8201CL? 100Mb/s ethernet PHY

http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PFid=13&Level=5&Conn=4&ProdID=25


IMG 0815.JPG

Youth lm1601t ethernet magnetics

http://www.youthele.com.tw/ Probably all the coils needed to connect the wires.

Hynix hy57v561620ftp-h 256Mbit (16M x16) Synchronous DRAM 133MHz

http://www.hynix.com/datasheet/pdf/dram/HY57V561620F(L)T(P)-xI(Rev0.2).pdf


IMG 0816.JPG

MPS (Monolithic power systems) MP1423DN? DC-DC step down converter

http://www.ecomm-aitg.com/ProductDetail12411.html http://products.monolithicpower.com/Products/CategoryTree.do


IMG 0818.JPG

Diversen




IMG 0824.JPG

Diversen




IMG 0827.JPG

clock



Internal wifi power


IMG 0811.JPG
Right under the 8 of R538 the output of iwifi is available. The internal wifi was probably meant as an USB device with a small internal connector. Power on ~3.3v, and off is 0v. You'd probably need to add a transistor and a fet. "under the 8" means that you first have to turn the board until R538 is horizontal ;-).
Topic revision: r79 - 25 Jul 2010 - 10:04:46 - TWikiGuest
 
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