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TMS320C6678: SRIO register Concept

Part Number: TMS320C6678


Hi

My tools:

OS: win7

Board: customized

DSP: C6678

FPGA: Virtex 7

CCS: 7

I studied "sprugw1b.pdf" and I have some question about that.

Q1:

What is the meaning of number 2 and 3  bitfields of register PER_SET_CNTL1 at page 164? ( Is the SYS_CLOCK source from TX port?)

I set the Peripheral at the 3.12Gbps rate and checked the "SPn_CTL2" register values.

The value of fields " BAUD_SEL" and "GB_3p125_EN" were zero (register SP(n)_CTL2 at page 214).

Q2: 

Is the value of fields " BAUD_SEL" and "GB_3p125_EN" correct? 

In my application FPGA send data to DSP and DSP after some processing sends data back to FPGA. I checked the "SP_GEN_CTL" register values(page 212).

The console prints were:

Q3:

I don't know what should be the value of "SP_GEN_CTL" register according to my application?

Q4:

What is the meaning of number 2 bitfields of register "LANEn_STAT0" at page 233?

Best Regards