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.
Part Number: AFE7444
I'm new to high speed data converters. The AFE7444 has LMFS specified in the data sheet. However, there are 5 numbers instead of 4. As such, I guess that the last one is for the "Hd" part. What does Hd mean?
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Yusuf%20Agoro:
thanks for the quick reply.
So do I understand correctly that the table found in the datasheet here:
on the first page, shows a column for TX LMFS and in the first data row shows 84111, that this corresponds to the configuration:
L = 8, M=4, F=1, S=1 and Hd=1?
And a second question: "transmitting a sample broken up into pieces over multiple lanes"
Using this as a reference:
Since within the JESD204B interface there seems to be a strict hierarchy such that
1 link contains L lanes1 lane contains M frames1 frame contains F octets1 octet contains S bits
how does it make sense to break up a sample over multiple lanes? Naively, I would think that this sounds like some sort of compression technique or coherent transmission. Is there any white paper or such, where I could read up on this? Or if it's simple enough, could you please clarify? Is there any description on the HD mode?
In reply to Imran Khan46:
Reference the following JESD format table for TX LMFS = 84111. Notice how the sample for channel I is 16 bits total ( i0[15:0] ). Yet in a single frame half of the 16 bit sample is in lane 1 ( i0[15:8] ) while the other half is packaged in lane 2 ( i0[7:0] ). Because of this Hd aka high density is set to 1.
Hopefully this answers your question.
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. 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.