diff --git a/library/jesd204/ad_ip_jesd204_tpl_dac/ad_ip_jesd204_tpl_dac_ip.tcl b/library/jesd204/ad_ip_jesd204_tpl_dac/ad_ip_jesd204_tpl_dac_ip.tcl
index 408703373..7bf3fe3a2 100644
--- a/library/jesd204/ad_ip_jesd204_tpl_dac/ad_ip_jesd204_tpl_dac_ip.tcl
+++ b/library/jesd204/ad_ip_jesd204_tpl_dac/ad_ip_jesd204_tpl_dac_ip.tcl
@@ -93,7 +93,7 @@ foreach p {DDS_CORDIC_DW DDS_CORDIC_PHASE_DW} {
 
 foreach {p v} {
   "NUM_LANES" "1 2 3 4 8 16" \
-  "NUM_CHANNELS" "1 2 4 6 8 16 32" \
+  "NUM_CHANNELS" "1 2 4 6 8 16 32 64" \
   "BITS_PER_SAMPLE" "8 12 16" \
   "CONVERTER_RESOLUTION" "8 11 12 16" \
   "SAMPLES_PER_FRAME" "1 2 3 4 6 8 12 16" \
diff --git a/library/jesd204/scripts/jesd204.tcl b/library/jesd204/scripts/jesd204.tcl
index c24ce1037..dbd7b50f6 100644
--- a/library/jesd204/scripts/jesd204.tcl
+++ b/library/jesd204/scripts/jesd204.tcl
@@ -254,9 +254,18 @@ proc adi_tpl_jesd204_tx_create {ip_name num_of_lanes num_of_converters samples_p
 
     if {$num_of_converters > 1} {
       # Concatenation and slicer cores
-      ad_ip_instance xlconcat "${ip_name}/data_concat" [list \
-        NUM_PORTS $num_of_converters \
-      ]
+      # xconcat limited to 32 input ports
+      for {set i 0} {$i < $num_of_converters} {incr i 32} {
+      ad_ip_instance xlconcat "${ip_name}/data_concat[expr $i/32]" [list \
+        NUM_PORTS [expr min(32,$num_of_converters-$i)] \
+        ]
+      }
+      # main concat
+      if {$num_of_converters > 32} {
+       ad_ip_instance xlconcat "${ip_name}/data_concat" [list \
+        NUM_PORTS [expr int(ceil(double($num_of_converters)/32))] \
+        ]
+      }
 
       for {set i 0} {$i < $num_of_converters} {incr i} {
         ad_ip_instance xlslice "${ip_name}/enable_slice_${i}" [list \
@@ -289,10 +298,18 @@ proc adi_tpl_jesd204_tx_create {ip_name num_of_lanes num_of_converters samples_p
 
         ad_connect ${ip_name}/enable_slice_$i/Dout ${ip_name}/dac_enable_$i
         ad_connect ${ip_name}/valid_slice_$i/Dout ${ip_name}/dac_valid_$i
-        ad_connect ${ip_name}/dac_data_$i ${ip_name}/data_concat/In$i
+        ad_connect ${ip_name}/dac_data_$i ${ip_name}/data_concat[expr $i/32]/In[expr $i%32]
 
       }
-      ad_connect ${ip_name}/data_concat/dout ${ip_name}/dac_tpl_core/dac_ddata
+      if {$num_of_converters > 32} {
+        # wire all concatenators together
+        for {set i 0} {$i < $num_of_converters} {incr i 32} {
+          ad_connect ${ip_name}/data_concat[expr $i/32]/dout ${ip_name}/data_concat/In[expr $i/32]
+        }
+        ad_connect ${ip_name}/data_concat/dout ${ip_name}/dac_tpl_core/dac_ddata
+      } else {
+        ad_connect ${ip_name}/data_concat0/dout ${ip_name}/dac_tpl_core/dac_ddata
+      }
     } else {
       ad_connect ${ip_name}/dac_data_0 ${ip_name}/dac_tpl_core/dac_ddata
       ad_connect ${ip_name}/dac_tpl_core/enable ${ip_name}/dac_enable_0