The PCIe product family is based on the PCI Express base 2.0 specification. All products have been certified compliant by the PCI SIG organization. The upstream data path to the host controller is by a one lane interface. All devices have on chip PCIe PHY and controller and support standard MaxLinear UART features such as the 9 bit multi-drop mode and auto hardware and software flow control. MaxLinear is an industry leader in UARTs with over 100 different UART products and is the largest supplier of PCI and PCIe UARTs.