TSUCLKSEL=NOCLOCK
Ethernet control register
| TSUCLKSEL | TSU Clock selection value 0 (NOCLOCK): No TSU clock source selected 1 (PLL): Select system clock as TSU Clock 2 (RXCLK): Select ethernet RX Clock as TSU Clock 3 (REFCLK): Select ref clock as TSU Clock 4 (TSUEXTCLK): Select tsu external pin as TSU Clock | 
| TSUPRESC | Clock division factor of TSUPRESC+1 | 
| MIISEL | MII select signal | 
| GBLCLKEN | Global Clock Enable signal for Ethernet clocks tsu_clk, tx_clk, rx_clk and ref_clk | 
| TXREFCLKSEL | REFCLK source select for RMII_TXD and RMII_TX_EN |