1 files changed, 10 insertions, 2 deletions
diff --git a/usrp2/control_lib/settings_readback_bus_fifo_ctrl.v b/usrp2/control_lib/settings_readback_bus_fifo_ctrl.v
index 7219aa6a1..18119d2bd 100644
--- a/usrp2/control_lib/settings_readback_bus_fifo_ctrl.v
+++ b/usrp2/control_lib/settings_readback_bus_fifo_ctrl.v
@@ -19,6 +19,7 @@
 
 module settings_readback_bus_fifo_ctrl
     #(
+        parameter NUM_PERFS = 4,
         parameter FIFO_DEPTH = 6, //64 entries depth
         parameter PROT_DEST = 0 //protocol framer destination
     )
@@ -29,6 +30,9 @@ module settings_readback_bus_fifo_ctrl
         //current system time
         input [63:0] vita_time,
 
+        //ready signals for multiple peripherals
+        input [NUM_PERFS-1:0] perfs_ready,
+
         //input fifo36 interface control
         input [35:0] in_data, input in_valid, output in_ready,
 
@@ -244,8 +248,12 @@ module settings_readback_bus_fifo_ctrl
     `endif
 
     //action occurs in the event state and when there is fifo space (should always be true)
-    //the third condition is that is an event time has been set, action is delayed until that time
-    wire action = (cmd_state == EVENT_CMD) && ~result_fifo_full && ((out_command_has_time)? (now || late || clear) : 1);
+    //the third condition is that all peripherals in the mask are ready/active high
+    //the fourth condition is that is an event time has been set, action is delayed until that time
+    wire [NUM_PERFS-1:0] perfs_mask = command_hdr_reg[10+NUM_PERFS-1:10];
+    wire perfs_in_mask_ready = (perfs_ready & perfs_mask) == perfs_mask;
+    wire time_ready = (out_command_has_time)? (now || late || clear) : 1;
+    wire action = (cmd_state == EVENT_CMD) && ~result_fifo_full && perfs_in_mask_ready && time_ready;
 
     assign command_fifo_read = action;
     assign result_fifo_write = action;