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USB Superspeed Peripherals

LoPe_3204351
New Contributor

I have to write a VHDL to interface my FX3 with an FPGA. I loaded the disc image AN65974 (slave fifo sync 2 bit) in the ram but i can't understand the endpoint addresses (flagA and FlagB). What they are? 00 - 01 - 10 - 11 ?

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1 Solution
Keerthy
Moderator
Moderator

Hi Lorenzo,

The flag A and Flag B are Thread 0 DMA ready and Thread 0 DMA Watermark flags respectively. You have to drive the address 00 in the 2 bit address bus to select Thread 0 and the corresponding socket status will be reflected by Flag A and Flag B.

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Keerthy
Moderator
Moderator

Hi Lorenzo,

The flag A and Flag B are Thread 0 DMA ready and Thread 0 DMA Watermark flags respectively. You have to drive the address 00 in the 2 bit address bus to select Thread 0 and the corresponding socket status will be reflected by Flag A and Flag B.

View solution in original post