ALLservice Service Forum
support board, PC repair, unlocking solutions
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Question about building the chip reader

 
Post new topic   Reply to topic    Service Forum Forum Index -> IBM/Lenovo ThinkPad Password Help Center (EN)
View previous topic :: View next topic  
Author Message
skygunner2
Nou Venit


Joined: 08 Sep 2009
Posts: 2
PostPosted: Tue Sep 08, 2009 8:02 am    Post subject: Question about building the chip reader Reply with quote
Hi,

I currently have a MAX3232 based RS232 to TTL converter (used to flash the xbox360 dvd-rom), has four wires
GND
3.3V VCC
TX (to TTL-I1)
RX (to TTL-O1)

Can I use this reader(MAX3232)? Need the TTL-O2 exactly as the drivern-i2cprog.pdf (I see it goes to SCL but just want to sure)?
If so I think I need to go for the simple-i2cprog and build from scratch.

Regards,
V
Back to top
View user's profile Send private message
victor
S.F. Boss


Joined: 07 Mar 2004
Posts: 2581
Location: Staff
PostPosted: Tue Sep 08, 2009 3:42 pm    Post subject: Reply with quote
You have to modify the circuit a lot. The driven programmer is not using RX/TX from serial port, so you have to redo the serial port connections.
And the TTL outputs towards SCL/SDA need the diodes and resistors.
And so on and so forth
_________________
Victor Voinea
ALLservice HQ, Romania.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Service Forum Forum Index -> IBM/Lenovo ThinkPad Password Help Center (EN) All times are GMT + 2 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Powered by phpBB © 2001, 2005 phpBB Group