diff --git a/src/libboard_artiq/src/cxp_downconn.rs b/src/libboard_artiq/src/cxp_downconn.rs
index a189d4f..050104a 100644
--- a/src/libboard_artiq/src/cxp_downconn.rs
+++ b/src/libboard_artiq/src/cxp_downconn.rs
@@ -70,6 +70,8 @@ pub fn loopback_testing(channel: usize, timer: &mut GlobalTimer, speed: CXP_SPEE
         info!("packet type = {:#06X}", (CXP[channel].downconn_packet_type_read)());
 
         cxp_proto::receive(channel).expect("loopback gtx rx error");
+        cxp_proto::downconn_debug_mem_print(channel);
+
         // DEBUG: print loopback packets
         const LEN: usize = 20;
         let mut pak_arr: [u32; LEN] = [0; LEN];