CLK_PIN_OUT
txs |= CLK_PIN_OUT | CLK_TX_RXCLK; /* RX clock */
txs |= CLK_PIN_OUT | CLK_BRG; /* BRG output */
txs |= CLK_PIN_OUT | CLK_TX_RXCLK; /* RX clock */
txs |= CLK_PIN_OUT | CLK_LINE; /* TXC input */
txs |= CLK_PIN_OUT | CLK_TX_RXCLK; /* RX clock */
txs |= CLK_PIN_OUT | CLK_BRG; /* BRG output */
txs |= CLK_PIN_OUT | CLK_TX_RXCLK; /* RX clock */
txs |= CLK_PIN_OUT | CLK_LINE; /* TXC input */