TMS320F28386D-Q1: Total number of inputs possible for CLB block

Hi Nima,

Thanks for the reply. I got your point regarding combining both CLB INPUT XBAR and Input X-BAR + CLB X-BAR. But you said INPUTXBAR + CLB XBAR can do another 8 signals. In the TRM document, INPUT 1 to 16 are available for INPUT X-BAR with CLB X-BAR as the destination for INPUTs 1 to 14. Also, in the syscfg, I was able to configure 16 inputs(not 14) for the Input XBAR.

But in the GPIO to CLB Tile Connections figure in the CLB section, only Inputs 1 to 6 are shown between Input X-BAR and CLB X-BAR, and in the Input X-BAR diagram in the Crossbar section, only the inputs 1 to 6 are connected to Output X-BAR. Which is correct?

My understanding is that I can use 16 Inputs from the CLB INPUT XBAR across 2 or 3 tiles as required for my application. Additionally, I can use 16 more inputs from Input X-BAR + CLB X-BAR creating AUX signals(max 8, is this what you meant by 8?) which are the combination of these input signals, to become the input of another 2 or 3 tiles.

For this, I need to know whether the issues I mentioned in the TRM are correct.

There are only 8 CLB XBAR outputs.

AUXSIG0-7 

Nima

Clearly, you are talking about the output from CLB XBAR, while I was talking about the maximum no of possible GPIO inputs to Input XBAR. I am assuming it is 16, even though in the GPIO to CLB Tile Connections figure in the CLB section, only Inputs 1 to 6 are shown between Input X-BAR and CLB X-BAR.  I wanted clarity on this point. So, my question is can I provide 16 GPIO inputs to the input XBAR? I understand that these 16 inputs become 8 aux outputs coming out of CLB X-BAR.

Thank you for the reply.

Regarding point 3, I think you meant 14 INPUT XBAR outputs.

I only see 10 in the table image i sent you!

Nima

Hi Nima, I am not able to reply to your latest comment. I am unable to attach an image. If you check the possible values for Mux 0- 7, 4 more Inputs are possible. The table you attached is incomplete. Also, I want to let you know that in Figure 9-5. GPIO to CLB Tile Connections, INPUT1 - INPUT6 is shown between Input X-BAR and CLB X-BAR(instead of 14).