Tool/software:
Hi, I'm Lee.
I have over 10 EA of DSP, TMS320C6678ACYP, and they are known as the silicon rev.2.
Is this device in the picture the Silicon rev 2.0 product?
So that, how can I recognize the DSP is Rev.1 or Rev.2?
Does "G1" following CYP at bottom of marking mean "Generation1"?
If there is a DSP marked as "G2", then does it mean the Rev.2?
Best Regards,
Lee
Lee,
Referring to the device datasheet:
TMS320C6678 Multicore Fixed and Floating-Point Digital Signal Processor datasheet (Rev. E)
... Nomenclature diagram:
The letter "A" in TDA320C6678ACYP would indicate SR2.0 (vs Blank = SR1.0).
Can you compare the picture on the PCB to any of the "known" SR2.0 parts that you have?
Regards,
Kyle
Kyle,
Sorry. I have other DSPs that are 'probably' SR2.0, not 'sure'. Also it is packaged perfectly for future use, so I can't compare with them.
In 243 page of the datasheet, the 'Part Marking' section says that the DSP in the picture is SR2.0.
However, another question in this forum says that it is SR1.0 : THIS URL
So, what is exact one?
Best Regards,
Lee
Hi Lee,
OK ... I think that old thread is wrong based on the Part Marking column.
I think you can trust the "order able part number" versus the Nomenclature diagram from pg 71.
As you point out ... the "Part Marking" seems to vary quite a bit, and the A in top right corner or @2010 TI or A1.25 GHz would all seem to id a part as SR2.0.
As a sanity check ... do you have JTAG connected on the pictured EVM? Or can you dump register values in general? If you read the JTAG ID register:
The VARIANT field should tell you if it's SR1.0 vs SR2.0.
Further, the Silicon Errata document shows a more direct way of interpreting SR1.0 vs 2.0 from the Lot Trace Code (LTC), as shown here:
I'm interpreting YB20 as xx=20.
Regards,
Kyle
