diff --git a/src/libboard_artiq/src/cxp_phys.rs b/src/libboard_artiq/src/cxp_phys.rs
index 0d11440..27d662c 100644
--- a/src/libboard_artiq/src/cxp_phys.rs
+++ b/src/libboard_artiq/src/cxp_phys.rs
@@ -19,23 +19,23 @@ pub enum CXP_SPEED {
 }
 
 pub fn setup(timer: &mut GlobalTimer) {
-    down_conn::setup(timer);
-    up_conn::setup();
+    rx::setup(timer);
+    tx::setup();
     change_linerate(CXP_SPEED::CXP_1);
 }
 
 pub fn change_linerate(speed: CXP_SPEED) {
     info!("Changing all channels datarate to {:?}", speed);
-    down_conn::change_linerate(speed);
-    up_conn::change_linerate(speed);
+    rx::change_linerate(speed);
+    tx::change_linerate(speed);
 }
 
-mod up_conn {
+mod tx {
     use super::*;
 
     pub fn setup() {
         unsafe {
-            csr::cxp_phys::upconn_tx_enable_write(1);
+            csr::cxp_phys::tx_enable_write(1);
         }
     }
 
@@ -43,18 +43,18 @@ mod up_conn {
         unsafe {
             match speed {
                 CXP_SPEED::CXP_1 | CXP_SPEED::CXP_2 | CXP_SPEED::CXP_3 | CXP_SPEED::CXP_5 | CXP_SPEED::CXP_6 => {
-                    csr::cxp_phys::upconn_bitrate2x_enable_write(0);
+                    csr::cxp_phys::tx_bitrate2x_enable_write(0);
                 }
                 CXP_SPEED::CXP_10 | CXP_SPEED::CXP_12 => {
-                    csr::cxp_phys::upconn_bitrate2x_enable_write(1);
+                    csr::cxp_phys::tx_bitrate2x_enable_write(1);
                 }
             };
-            csr::cxp_phys::upconn_clk_reset_write(1);
+            csr::cxp_phys::tx_clk_reset_write(1);
         }
     }
 }
 
-mod down_conn {
+mod rx {
     use super::*;
 
     pub fn setup(timer: &mut GlobalTimer) {