Updated description somewhat.

libraries/technology/eth_10g/tech_eth_10g.vhd

@@ -25,12 +25,26 @@
 -- Description:
 -- . For c_tech_stratixiv: not available (yet)
 --
+--     tr_ref_clk_156
+--     tr_ref_rst_156
+--     cal_rec_clk
+--                ___________________
+--                |                 |
+--     tx_snk --->|tech_            |---> xaui_tx_arr
+--     rx_src <---|eth_10g_stratixiv|<--- xaui_rx_arr
+--                |_________________|
+--                    |
+--                    |
+--                  mac_mm
+--
 -- . For c_tech_arria10:
---                __________________
---                |                |
---     tx_snk --->|tech_           |---> serial_tx
---     rx_src <---|eth_10g_arria10 |<--- serial_rx
---                |________________|
+--
+--     tr_ref_clk_644
+--                ___________________
+--                |                 |
+--     tx_snk --->|tech_            |---> serial_tx
+--     rx_src <---|eth_10g_arria10  |<--- serial_rx
+--                |_________________|
 --                    |
 --                    |
 --                  mac_mm

libraries/technology/eth_10g/tech_eth_10g_stratixiv.vhd

@@ -23,16 +23,15 @@
 
 -- Purpose: Combine mac_10g and xaui for c_tech_stratixiv
 -- Description:
---   The clocks come from an external central fPLL:
 --
 --   Blockdiagram:
 --
---                                  ref
---                              156 156  
---                _________      |  |   ____________
---                |       |      |  |   |          |
---                |       |      |  \-->|          |
---                |       |<-----+----->|          |
+--                                 ref
+--                             156 156  
+--                _________    | ^  |   ____________
+--                |       |    | |  |   |          |
+--                |       |    | |  \-->|          |
+--                |       |<---/ \------|          |
 --                |       |             |          |
 --                |       |    XGMII    |          |
 --     tx_snk --->|tech_  |------------>|tech_     |---> xaui_tx[3:0]