diff --git a/projects/adrv9009zu11eg/adrv2crr_fmc/system_top.v b/projects/adrv9009zu11eg/adrv2crr_fmc/system_top.v
index 1d4c57e40..0ded2ccc2 100644
--- a/projects/adrv9009zu11eg/adrv2crr_fmc/system_top.v
+++ b/projects/adrv9009zu11eg/adrv2crr_fmc/system_top.v
@@ -52,6 +52,10 @@ module system_top (
   inout               pmod0_d5,
   inout               pmod0_d6,
   inout               pmod0_d7,
+  output              gpio_0_exp_n, //CS
+  output              gpio_0_exp_p, //MOSI
+  input               gpio_1_exp_n, //MISO
+  output              gpio_1_exp_p, //SCK
   output              led_gpio_0,
   output              led_gpio_1,
   output              led_gpio_2,
@@ -234,6 +238,7 @@ module system_top (
   wire            tx_sync;
   wire            spi_mosi;
   wire            spi0_miso;
+  wire            spi_miso_s;
 
   reg  [7:0]     spi_3_to_8_csn;
 
@@ -243,6 +248,7 @@ module system_top (
       3'h1: spi_3_to_8_csn = 8'b11111101;
       3'h2: spi_3_to_8_csn = 8'b11111011;
       3'h3: spi_3_to_8_csn = 8'b11110111;
+      3'h4: spi_3_to_8_csn = 8'b11101111;
       default: spi_3_to_8_csn = 8'b11111111;
     endcase
   end
@@ -251,12 +257,16 @@ module system_top (
   assign spi_csn_adrv9009_b = spi_3_to_8_csn[1];
   assign spi_csn_hmc7044 = spi_3_to_8_csn[2];
   assign spi_csn_hmc7044_car = spi_3_to_8_csn[3];
+  assign gpio_0_exp_n = spi_3_to_8_csn[4];
+  assign gpio_1_exp_p = spi_clk;
+  assign gpio_0_exp_p = spi_3_to_8_csn[4] == 1'b0 ?  spi_mosi : 1'bZ;
+  assign spi_miso_s = spi_3_to_8_csn[4] == 1'b0 ? gpio_1_exp_n : spi_miso;
 
   adrv9009zu11eg_spi i_spi (
   .spi_csn(spi_3_to_8_csn),
   .spi_clk(spi_clk),
   .spi_mosi(spi_mosi),
-  .spi_miso_i(spi_miso),
+  .spi_miso_i(spi_miso_s),
   .spi_miso_o(spi0_miso),
   .spi_sdio(spi_sdio));
 
@@ -347,26 +357,26 @@ module system_top (
     .dio_i ({gpio_o[19:0]}),
     .dio_o ({gpio_i[19:0]}),
     .dio_p ({
-              pmod0_d7,           // 19
-              pmod0_d6,           // 18
-              pmod0_d5,           // 17
-              pmod0_d4,           // 16
-              pmod0_d3,           // 15
-              pmod0_d2,           // 14
-              pmod0_d1,           // 13
-              pmod0_d0,           // 12
-              led_gpio_3,         // 11
-              led_gpio_2,         // 10
-              led_gpio_1,         // 9
-              led_gpio_0,         // 8
-              dip_gpio_3,         // 7
-              dip_gpio_2,         // 6
-              dip_gpio_1,         // 5
-              dip_gpio_0,         // 4
-              pb_gpio_3,          // 3
-              pb_gpio_2,          // 2
-              pb_gpio_1,          // 1
-              pb_gpio_0}));       // 0
+              pmod0_d7,     // 19
+              pmod0_d6,     // 18
+              pmod0_d5,     // 17
+              pmod0_d4,     // 16
+              pmod0_d3,     // 15
+              pmod0_d2,     // 14
+              pmod0_d1,     // 13
+              pmod0_d0,     // 12
+              led_gpio_3,   // 11
+              led_gpio_2,   // 10
+              led_gpio_1,   // 9
+              led_gpio_0,   // 8
+              dip_gpio_3,   // 7
+              dip_gpio_2,   // 6
+              dip_gpio_1,   // 5
+              dip_gpio_0,   // 4
+              pb_gpio_3,    // 3
+              pb_gpio_2,    // 2
+              pb_gpio_1,    // 1
+              pb_gpio_0})); // 0
 
   IBUFDS_GTE4 i_ibufds_ref_clk_1 (
     .CEB (1'd0),
diff --git a/projects/adrv9009zu11eg/adrv2crr_fmcomms8/system_top.v b/projects/adrv9009zu11eg/adrv2crr_fmcomms8/system_top.v
index 946c01285..5612938fd 100644
--- a/projects/adrv9009zu11eg/adrv2crr_fmcomms8/system_top.v
+++ b/projects/adrv9009zu11eg/adrv2crr_fmcomms8/system_top.v
@@ -52,6 +52,10 @@ module system_top (
   inout               pmod0_d5,
   inout               pmod0_d6,
   inout               pmod0_d7,
+  output              gpio_0_exp_n, //CS
+  output              gpio_0_exp_p, //MOSI
+  input               gpio_1_exp_n, //MISO
+  output              gpio_1_exp_p, //SCK
   output              led_gpio_0,
   output              led_gpio_1,
   output              led_gpio_2,
@@ -334,6 +338,7 @@ module system_top (
   wire            tx_sync;
   wire            spi_mosi;
   wire            spi0_miso;
+  wire            spi_miso_s;
 
   reg   [7:0]     spi_3_to_8_csn;
 
@@ -348,6 +353,7 @@ module system_top (
       3'h1: spi_3_to_8_csn = 8'b11111101;
       3'h2: spi_3_to_8_csn = 8'b11111011;
       3'h3: spi_3_to_8_csn = 8'b11110111;
+      3'h4: spi_3_to_8_csn = 8'b11101111;
       default: spi_3_to_8_csn = 8'b11111111;
     endcase
   end
@@ -365,6 +371,10 @@ module system_top (
   assign spi_csn_adrv9009_b = spi_3_to_8_csn[1];
   assign spi_csn_hmc7044 = spi_3_to_8_csn[2];
   assign spi_csn_hmc7044_car = spi_3_to_8_csn[3];
+  assign gpio_0_exp_n = spi_3_to_8_csn[4];
+  assign gpio_1_exp_p = spi_clk;
+  assign gpio_0_exp_p = spi_3_to_8_csn[4] == 1'b0 ?  spi_mosi : 1'bZ;
+  assign spi_miso_s = spi_3_to_8_csn[4] == 1'b0 ? gpio_1_exp_n : spi_miso;
 
   assign spi_csn_adrv9009_c = spi_fmcomms8_3_to_8_csn[0];
   assign spi_csn_adrv9009_d = spi_fmcomms8_3_to_8_csn[1];
@@ -374,7 +384,7 @@ module system_top (
   .spi_csn(spi_3_to_8_csn),
   .spi_clk(spi_clk),
   .spi_mosi(spi_mosi),
-  .spi_miso_i(spi_miso),
+  .spi_miso_i(spi_miso_s),
   .spi_miso_o(spi0_miso),
   .spi_sdio(spi_sdio));
 
diff --git a/projects/adrv9009zu11eg/common/adrv2crr_fmc_constr.xdc b/projects/adrv9009zu11eg/common/adrv2crr_fmc_constr.xdc
index d7095cf7d..77817fdfb 100644
--- a/projects/adrv9009zu11eg/common/adrv2crr_fmc_constr.xdc
+++ b/projects/adrv9009zu11eg/common/adrv2crr_fmc_constr.xdc
@@ -27,6 +27,11 @@ set_property -dict {PACKAGE_PIN  AV14 IOSTANDARD LVCMOS18} [get_ports pb_gpio_1]
 set_property -dict {PACKAGE_PIN  AT11 IOSTANDARD LVCMOS18} [get_ports pb_gpio_2]
 set_property -dict {PACKAGE_PIN  AT12 IOSTANDARD LVCMOS18} [get_ports pb_gpio_3]
 
+set_property -dict {PACKAGE_PIN  AM16 IOSTANDARD LVCMOS18} [get_ports gpio_0_exp_n]
+set_property -dict {PACKAGE_PIN  AL16 IOSTANDARD LVCMOS18} [get_ports gpio_0_exp_p]
+set_property -dict {PACKAGE_PIN  AK17 IOSTANDARD LVCMOS18} [get_ports gpio_1_exp_n]
+set_property -dict {PACKAGE_PIN  AJ17 IOSTANDARD LVCMOS18} [get_ports gpio_1_exp_p]
+
 set_property -dict {PACKAGE_PIN AR19 IOSTANDARD LVCMOS18} [get_ports resetb_ad9545]
 set_property -dict {PACKAGE_PIN AP19 IOSTANDARD LVCMOS18} [get_ports hmc7044_car_reset]
 set_property -dict {PACKAGE_PIN AP20 IOSTANDARD LVCMOS18} [get_ports hmc7044_car_gpio_1]