This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
I m using DDC 114 in my design. My query is how many ddc's can be connected in daisy chain mode. I need to connect 8 DDC's for my design. And if i can connect 8 DDC's then is there any special precautions to be taken while designing.
Hi Pooja, If you refer to page 22. of the DD114 Datasheet, you will see that the data is shifted from one device to the next. If you look at the timing diagram (Figure 22), you can see that all of the data has to be shifted between two DVALID pulses.
The exact amount of devices daisy-chained would depend of the delay between two DVALID pulses and the speed of the DCLK. You can calculate it with this formula:
Total amount of serial ouput data / Clock speed = Total amount of time needed to capture daisy-chained serial output data.
This total time is the one that has to be within two DVALID pulses.
Note also, that the DDC232 is a 32 channel device with the same functionality than the DDC114. (8xDDC114 = DDC232).
In reply to Saimon:
Hi Pooja, I hope you received the answer that you were expecting. If so, please verify the answer as correct. I'm going to go ahead and close this thread. If you have any further questions, please don't hesitate to post them and the thread will be reopened. Regards Simon
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.