diff --git a/projects/ad469x_fmc/common/ad469x_qsys.tcl b/projects/ad469x_fmc/common/ad469x_qsys.tcl
index 024a5e6eba4..49135abb0a8 100644
--- a/projects/ad469x_fmc/common/ad469x_qsys.tcl
+++ b/projects/ad469x_fmc/common/ad469x_qsys.tcl
@@ -80,9 +80,10 @@ set_interface_property ad469x_spi_trigger EXPORT_OF spi_engine_offload_0.if_trig
 set_interface_property ad469x_spi_cnv     EXPORT_OF ad469x_trigger_gen.if_pwm_0
 set_interface_property ad469x_spi_resetn  EXPORT_OF reset_bridge_0.out_reset
 
-
 add_connection axi_spi_engine_0.if_spi_resetn reset_bridge_0.in_reset
 
+set_interface_property dmac_s_axi_xfer_req      EXPORT_OF axi_dmac_0.s_axi_xfer_req
+
 # clocks
 
 add_interface ad469x_spi_clk        clock source
diff --git a/projects/ad469x_fmc/de10nano/system_top.v b/projects/ad469x_fmc/de10nano/system_top.v
index ab064ef54a3..834a808f964 100644
--- a/projects/ad469x_fmc/de10nano/system_top.v
+++ b/projects/ad469x_fmc/de10nano/system_top.v
@@ -153,19 +153,25 @@ module system_top #(
   wire          i2c0_scl_in_clk;
 
   wire          ad469x_spi_cnv_s;
+   wire          ad469x_spi_cnv_s_int;
+   wire          ad469x_spi_cnv_s_int2;
   wire          ad469x_spi_cs_s;
 
+wire dmac_s_axi_xfer_req;
   wire          spi_trigger;
   wire          spi_clk_s;
   wire          spi_resetn;
   wire          spi_trigger_ed;
 
-  assign ad469x_spi_cnv = (SPI_4WIRE == 0) ? ad469x_spi_cnv_s : ad469x_spi_cs_s;
+assign ad469x_spi_cnv_s_int2 = (ad469x_spi_cnv_s_int & dmac_s_axi_xfer_req) | gpio_o[35];
+
+
+  assign ad469x_spi_cnv = (SPI_4WIRE == 0) ? ad469x_spi_cnv_s_int2 : ad469x_spi_cs_s;
   assign ad469x_spi_cs = ad469x_spi_cs_s;
 
   // adc control gpio assign
 
-  assign gpio_i[63:35] = gpio_o[63:35];
+  assign gpio_i[63:36] = gpio_o[63:36];
   assign gpio_i[31:15] = gpio_o[31:15];
 
   assign ltc2308_cs = gpio_o[34];
@@ -291,14 +297,15 @@ module system_top #(
     .sys_gpio_in_export (gpio_i[63:32]),
     .sys_gpio_out_export (gpio_o[63:32]),
 
-    .ad469x_spi_cs_cs (ad469x_spi_csn),
+    .ad469x_spi_cs_cs (ad469x_spi_cs_s),
     .ad469x_spi_sclk_clk (ad469x_spi_clk),
     .ad469x_spi_sdi_sdi (ad469x_spi_miso),
     .ad469x_spi_sdo_sdo (ad469x_spi_mosi),
     .ad469x_spi_resetn_reset_n (spi_resetn),
     .ad469x_spi_clk_clk (spi_clk_s),
+    .dmac_s_axi_xfer_req(dmac_s_axi_xfer_req),
  //   .ad469x_spi_busy(ad469x_busy_alt_gp0),
-    .ad469x_spi_cnv_if_pwm (ad469x_spi_cnv_s),
+    .ad469x_spi_cnv_if_pwm (ad469x_spi_cnv_s_int),
 
     .sys_spi_MISO (1'b0),
     .sys_spi_MOSI (),