Innosilicon LVDS TX PHY contains four 7-bit parallel-load serial-out shift registers, a 7x clock PLL, and five LVDS line drivers in a single integrated circuit. Innosilicon LVDS RX PHY contains serial-to-parallel logic and PLL. Both LVDS TX PHY and LVDS RX PHY contain register banks, which can be configured by registers through APB bus. In addition, both Innosilicon LVDS TX PHY and Innosilicon LVDS RX PHY can be extended from 5 lanes to n lanes (n value is provided by the customer). Therefore, the TTL lines extend respectively.