Joined: 16 Jan 2005 Posts: 559 Location: Tucson, AZ
SPI Setup and Timing Question
Posted: Fri Sep 30, 2005 9:30 am
Hello All,
You may recall that I had a previous question about an LED driver ASIC. I'm coding right now and ready to test it and I could desperately use some expert help.
Here is a link to the data sheet (timing diagram is on page 3):
1. Should I use SPI_L_TO_H or vice versa? A brief explanation of why would be a huge help in the future so I don't have to ask again...the whole teach a man to fish deal....
2. Are there any of the other SPI setup parameters that I need to deal with?
3. Are there any of the notes at the bottom of the timing diagram that I need to consider?
Thanks to all, I think once I get it setup I can write the driver.
John
Neutone
Joined: 08 Sep 2003 Posts: 839 Location: Houston
Posted: Fri Sep 30, 2005 9:40 am
The PDF you reference shows the serial-in being sampled @ the SPI_L_TO_H edge of the clock signal. Notice the dashed line.
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