Hello,
I am looking at the toplevel module ustp_std.v
It is my understanding that the data to be sent coming from the PC or
the
data recevied going to the PC is the “usbdata” inout.
the other inouts io_tx_a, io_tx_b, io_rx_a and io_rx_b are the signal
going
to/coming from the daughterboards.
I am still confused on the purpose of the following inputs: rx_a_a,
rx_b_a,
rx_a_b, rx_b_b and the following outputs: tx_a, tx_b.
Any clarification on the purpose of those inputs and outputs would me
greatly appreciated.
Thank you ahead of time,
Oussama.