diff --git a/src/gateware/cxp_upconn.py b/src/gateware/cxp_upconn.py
index 0177818..e4c2c26 100644
--- a/src/gateware/cxp_upconn.py
+++ b/src/gateware/cxp_upconn.py
@@ -180,7 +180,7 @@ class Transmitter(Module, AutoCSR):
         self.specials += [
             # # debug sma
             # Instance("OBUF", i_I=serdes.o, o_O=debug_sma.p_tx),
-            # Instance("OBUF", i_I=cg.clk_10x, o_O=debug_sma.n_rx),
+            Instance("OBUF", i_I=serdes.o, o_O=debug_sma.n_rx),
 
 
 
@@ -205,8 +205,20 @@ class Transmitter(Module, AutoCSR):
 
 class CXP_UpConn_PHYS(Module, AutoCSR):
     def __init__(self, pads, sys_clk_freq, debug_sma, pmod_pads):
+        self.clk_reset = CSR()
+        self.bitrate2x_enable = CSRStorage()
+        self.tx_enable = CSRStorage()
+
+        # # #
+
+
         self.tx_phys = []
         for i, pad in enumerate(pads):
             tx = Transmitter(pad, sys_clk_freq, debug_sma, pmod_pads)
             self.tx_phys.append(tx)
             setattr(self.submodules, "tx"+str(i), tx)
+            self.sync += [
+                tx.clk_reset.eq(self.clk_reset.re),
+                tx.bitrate2x_enable.eq(self.bitrate2x_enable.storage),
+                tx.tx_enable.eq(self.tx_enable.storage),
+            ]