parameter TX_SENDING = 1;
parameter TX_DELAY_RESTART = 2;
-reg [10:0] rx_clk_divider = CLOCK_DIVIDE;
-reg [10:0] tx_clk_divider = CLOCK_DIVIDE;
+reg [21:0] rx_clk_divider = CLOCK_DIVIDE;
+reg [21:0] tx_clk_divider = CLOCK_DIVIDE;
reg [2:0] recv_state = RX_IDLE;
reg [5:0] rx_countdown;