Open Microprocessor Module
From HBMobile
- Introduction
- This page will capture the information pertaining to the design of an Open Microprocessor Module for home brew mobile phones.
- Open Source
- The Open Microprocessor Module will be an open source design and subject to licensing terms terms that are yet to be determined. Any suggestions? Write it here...
- Preliminary Specification
- PLEASE ADD YOUR SUGGESTIONS at the bottom!
- i.MX31 @ 532 MHz
- 128 MB Mobile DDR SDRAM (Micron, MT46H32M32LF)
- 32 MB Mobile NOR Flash (Spansion, S29WS256N)
- Power management controller and reset generation
- LiPoly recharger (Linear Tech, LTC4076)
- Real time clock
- Touch panel controller
- Audio Codec
- All power supplies (Core, memory, I/O, peripherals, backlight)
- USB Physicial Layer (USB 2.0 HS controller is on the i.MX31)
- Land grid array breaking out all i.MX31 signals.
- Datasheets
- Will link to pdf datasheets here.
- Dimensions
- 50mm x 35mm (an educated guess)
Sugesgions
- Flash configuration
- How about going for a 2MB NOR flash for the boot loader and a seperate 64MB NAND flash for the kernel & root fs? I _think_ this is going to be cheaper and you get more flash. Uses more board space tho. - Tom
- Breakout
- Instead of the LGA breakout, perhaps one or maybe several FPC connectors could be used? Then a second board with the GSM/Bluetooth/WLAN modules could be connected in a more versatile way, I.e. side-by-side or stacked. Could the device also include the FPC for the LCD?
