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common/up_xfer_cntrl: Fix transfer done timing 

up_xfer_done should signalize when a previous control set is
transferred to the other clock domain and the current control set is latched.

If a bit from the up_data_cntrl changes, it should stay in that state until
the up_xfer_done asserts.
main
Laszlo Nagy 2022-01-31 15:34:25 +00:00 committed by Laszlo Nagy
parent 63a1233101
commit 1ca5abc91e
1 changed files with 1 additions and 1 deletions
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library/common/up_xfer_cntrl.v
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@ -91,7 +91,7 @@ module up_xfer_cntrl #(
up_xfer_state_m2 <= up_xfer_state_m1;
up_xfer_state <= up_xfer_state_m2;
up_xfer_count <= up_xfer_count + 1'd1;
up_xfer_done_int <= (up_xfer_count == 6'd1) ? ~up_xfer_enable_s : 1'b0;
up_xfer_done_int <= (up_xfer_count == 6'd0) ? ~up_xfer_enable_s : 1'b0;
if ((up_xfer_count == 6'd1) && (up_xfer_enable_s == 1'b0)) begin
up_xfer_toggle <= ~up_xfer_toggle;
up_xfer_data <= up_data_cntrl;