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ad_gt_es: status asserted early for latency

main
Rejeesh Kutty 2014-04-01 15:06:33 -04:00
parent 04df908fbf
commit 2472d61daf
1 changed files with 15 additions and 3 deletions
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18
library/common/ad_gt_es.v
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@ -131,6 +131,8 @@ module ad_gt_es (
// state machine // state machine
parameter ES_FSM_IDLE = 6'h00; parameter ES_FSM_IDLE = 6'h00;
parameter ES_FSM_STATUS = 6'h30;
parameter ES_FSM_INIT = 6'h31;
parameter ES_FSM_CTRLINIT_READ = 6'h01; parameter ES_FSM_CTRLINIT_READ = 6'h01;
parameter ES_FSM_CTRLINIT_RRDY = 6'h02; parameter ES_FSM_CTRLINIT_RRDY = 6'h02;
parameter ES_FSM_CTRLINIT_WRITE = 6'h03; parameter ES_FSM_CTRLINIT_WRITE = 6'h03;
@ -451,15 +453,25 @@ module ad_gt_es (
end else begin end else begin
case (es_fsm) case (es_fsm)
ES_FSM_IDLE: begin // idle ES_FSM_IDLE: begin // idle
if (es_start == 1'b0) begin if (es_start == 1'b1) begin
es_fsm <= ES_FSM_STATUS;
end else begin
es_fsm <= ES_FSM_IDLE; es_fsm <= ES_FSM_IDLE;
end else if (es_init == 1'b1) begin end
end
ES_FSM_STATUS: begin // set status
es_fsm <= ES_FSM_INIT;
end
ES_FSM_INIT: begin // initialize
if (es_init == 1'b1) begin
es_fsm <= ES_FSM_CTRLINIT_READ; es_fsm <= ES_FSM_CTRLINIT_READ;
end else begin end else begin
es_fsm <= ES_FSM_HOFFSET_READ; es_fsm <= ES_FSM_HOFFSET_READ;
end end
end end
ES_FSM_CTRLINIT_READ: begin // control read ES_FSM_CTRLINIT_READ: begin // control read
es_fsm <= ES_FSM_CTRLINIT_RRDY; es_fsm <= ES_FSM_CTRLINIT_RRDY;
end end