Difference between revisions of "Paraflasher"
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| − | ! | + | ! 10-Bit FET Bus Switch With Level Shifting |
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| − | * | + | *Package/Case:SOIC (DW) |
| − | * | + | *No. of Contacts:24 |
| − | * | + | *Supply Voltage (Min/Max):4.5V/5.5V |
| − | | [http:// | + | *Supply Current (Max):3uA |
| − | | 0. | + | | [http://focus.ti.com/lit/ds/symlink/sn74cbtd3861.pdf Texas Instruments SN74CBTD3861DW] |
| + | | 0.64 | ||
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Revision as of 20:30, 26 November 2008
THIS PAGE IS STILL UNDER CONSTRUCTION AND IS NOT LINKED ANYWHERE YET
Welcome to The LPCflasher Project. Open source hardware for developing open source software.
The project is maintained by Joseph Smith.
Contents
Overview
The LPCflasher is low-cost simple flash programming device. It can be used to flash a variety of LPC flash chips and firmware hubs (FWH). The hope is someday it will also be able to support SPI chips. It is also meant to be modular so you can flash a variety flash chip packages. The LPCflasher is based on an old LPC programmer built to flash LPC chips on the xbox, the LPC^2 (Low Parts Count LPC Programming Cable). The LPCflasher is not for sale, it is meant for that "do-it-yourself" kind of person. Although if the project becomes popular, bare PCB's could be produced and sold at cost. Anyone with novice to moderate soldering skills can build one.
Other Pictures
- LPCflasher top.jpg
Top
- LPCflasher bottom.jpg
Ugly Bottom
- LPCflasher front.jpg
Front
- LPCflasher right.jpg
Right
- LPCflasher rear.jpg
Rear
- LPCflasher left.jpg
Left
Components
| Component | Recomended Specs | Part Used | Price Paid ($US) |
|---|---|---|---|
| DB25 Connector |
|
ITW McMurdo DB25PNF | 3.82 |
| 10-Bit FET Bus Switch With Level Shifting |
|
Texas Instruments SN74CBTD3861DW | 0.64 |
| Octal Buffer |
|
STMicroelectronics M74HC244B1R | 0.40 |
| Header Connector |
|
Molex 10897162 | 1.19 |
| USB B Connector |
|
Adam Technologies USB-B-S-RA | 0.39 |
| PTC Resettable Fuse |
|
Littelfuse 60R025XU | 0.26 |
| Blue LED |
|
OPTEK Technology OVLFB3C7 | 0.74 |
| LED Resistor |
|
Vishay/Dale CPF2200R00FKE14 | 0.42 |
| Linear Voltage Regulator |
|
National Semiconductor LM1084IT-3.3/NOPB | 2.83 |
| 2 Tantalum Capacitors |
|
Vishay/Sprague 173D106X9010VE3 | 0.56 X 2 |
| Breadboard PCB |
|
A piece of Roth Electronik 26M2198 | Already had (5.93) |
| Hook-Up Wire |
|
About a foot of Belden 9978 013100 | Already had (Spool of 100ft 22.61) |
| Small Power Wires |
|
Already had |
The Circuit Explained
Data Circuit
Signals Simplified
| Parallel Port | To LPC Signal | To FWH Signal |
|---|---|---|
| D0 | LCLK | CLK |
| D1 | LFRAME | FWH4 |
| D2 | RST | RP |
| D3 | LAD0 | FWH0 |
| D4 | LAD1 | FWH1 |
| D5 | LAD2 | FWH2 |
| D6 | LAD3 | FWH3 |
| /Error | LAD0 | FWH0 |
| /SELIN | LAD1 | FWH1 |
| /PE | LAD2 | FWH2 |
| /Ack | LAD3 | FWH3 |
Power Circuit
If there are any inconsistencies or you would like to elaborate on anything above, please feel free.
Daughter Boards
TODO
Software
TODO: flashrom???
Support
TODO
Conclusion
TODO
