I'm yu, jinsung.
I post this question on forum to acquire information for DP83640T-EVK.
I've found how to use DP83640T-EVK board and how to compose this.
of course, through application note, data sheet and guide book such as AN-1963, 1838, 1728 and 1729 etc.
but, in my case most information is not useful for me.
I went so far as to find information that TI doesn't sale ALP100 board no more.
so..how can I prove effectuality for DP83640T-EVK board, before manufacture??
I just want a manual or application code about how to control IEEE 1588 PTP.
and then...Is there no software to control demo board in DP83640?? only hardware platform??
please, tell me about these.
I'll wait for your answer.
Thanks.
Hi,
First, let me apologize for the delay in addressing your question. Hopefully I can provide some pointers to help with your questions.
As you noted, the ALP100 board is not available for sale. I will provide some details on the Eval Kits below. In the meantime, could you please provide some details of your goals for your evaluation? That might help me in providing you with the right information and determining how we might be able to help. I am interested to know what level of synchronization accuracy you require, what your end application is, what level of software development you would undertake for the development, etc.
The DP83640T-EVKs provide hardware assist for IEEE 1588, but they do not perform IEEE 1588 PTP synchronization by themselves. In the demo, an IEEE 1588 PTP stack is running in software on a PC. The FPGA on the ALP100 board provides MAC functionality, packet buffering, etc. The DP83640 devices perform packet filtering and timestamping for IEEE 1588 as well as clock generation, event monitoring, output triggering, etc.
While we do not offer a PTP driver for the DP83640, there is some supporting collateral for the device. In addition to the datasheet (http://www.ti.com/litv/pdf/snls335a), the best source of information would be the Software Development Guide (SDG) and the EPL C code reference library. The SDG provides detailed information on our IEEE 1588 implementation. The SDG and the EPL are available on the web at:
http://www.ti.com/litv/zip/snlc036
The EPL C code reference library includes functions that should help you understand the device functionality and should help in developing a driver.
The DP83640 device does support a Synchronous Ethernet mode that can be used to evaluate synchronization between two devices. No time or phase information is shared between the master and the slave, but you can do a comparison of frequencies for the devices, somewhat similar to what is done in the demo. Would that be of interest to you?
As I mentioned, if you can provide some guidance on your end goals and expectations, we can try to help you find a solution. Hopefully we can still find a way to help you realize your solution using our devices.
Patrick