Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

I2C SCL cutoff during transfer

Status
Not open for further replies.
R

raco_rage

Member level 3
Joined
Mar 14, 2011
Messages
61
Helped
18
Reputation
36
Reaction score
18
Trophy points
1,288
Activity points
1,601
Hello everyone,

I have a very wierd problem on I2C.

Infineon is the master and PIC is the slave. Using 100kHz baudrate. Very randomly(rarely), one of the SCL pulses is cut short and is only 300ns, whereas it should be around 10us.

All interrupts on infineon are disabled for the duration of I2C.

I have tried everything and this problem has taken up a lot of my time.

If anyone has any ideas or has encountered this kind of problem before, please help me out.

The waveforms are attached.

https://obrazki.elektroda.pl/73_1300293419.jpg
https://obrazki.elektroda.pl/2_1300293419.jpg
https://obrazki.elektroda.pl/94_1300293419.jpg
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top