FTDI Chip USB 3.0 interface IC retains ease-of-use features

November 12, 2014 // By Graham Prophet
FT600Q and FT601Q are FTDI Chip's first generation USB 3.0 products that function as SuperSpeed USB 3.0 to FIFO bridges, providing data bursting rates of up to 3.2 Gbps.

The company says it has carried over the ease-of-use features from its previous USB devices; Windows 8 marked a “take-off point” for USB 3, and although this generation has a completely new driver, the user sees no difference, and still sees a simple read-write transfer. The FT600Q comes in 56-pin QFN package and has a 16-bit wide FIFO bus interface, while FT601Q comes in 76-pin QFN package and has a 32-bit wide FIFO bus interface. Both these chips support up to eight endpoints, other than the management endpoints. The endpoints are linked to a configurable endpoint buffers of 16 kByte length for IN and 16 kByte for OUT.

Both FT600Q and FT601Q support two interfacing modes; the 245 FIFO mode and the multi-channel FIFO mode, and thus provide more flexibility for system designers. The 245 FIFO mode has a simpler protocol, but for more sophisticated customers, the multi-channel FIFO mode supports up to 4 logical FIFO channels and data structures optimised for higher throughputs. The FIFO is provided with a 16 kByte configurable buffer.

The remote wake up function on these chips can be used to rapidly bring the USB host controller out of suspend mode. The USB battery charger detection function enables USB peripheral devices to detect the presence of a higher current power source in order to boost charging capabilities. It means that the FT600 can detect connection to a USB-compliant dedicated charging port (DCP) and transmit a signal allowing external logic to switch to charging mode. The IC can also benefit from the higher power delivery capabilities (up to 900 mA) that the USB 3.0 standard supports while still being able to transfer data.

Engineers can access extensive flexibility to configure FT600/1Q to their desired application, which can include multi-function printers, scanners, high resolution video cameras, still image cameras, high definition displays, data acquisition systems, surveillance equipment and medical/industrial imaging systems.

The FT600Q and FT601Q ICs have