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pulse FTDI Chip USB 3.0 interface IC retains ease-of-use features 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 readwrite 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 USBcompliant 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. Digi-Key and Mentor cooperate on low-cost PCB design tools Aiming to “meet the needs of today’s engineers” Mentor Graphics – as the software provider – has joined forces with distributor Digi-Key – with access to a worldwide base of designers – to present an “entry-level” range of three software tools that are intended to get designs started more easily and, in many cases, take them through to production. The software is in the Mentor product family, at a new lower entry point than either its (high-end) Xpedition or its PADS offering. Mentor and Digi-key are emphatic that this is not free software (“We’ve got free software as well,” says a Digi-Key spokesman, “this is different”) but a fully supported and maintained software offering. It may lack some of the higher functions of PADS or Xpedition, but it is only capacity-limited to 1500 connections, Complete article, here six layers and 50 square inches. The three tools are Designer Schematic, Designer Layout, which are the chargeable elements, and both give access to the Mentor PartQuest website. Digi-Key points out that while the tools will directly access its own inventory and parts database, there is no restriction to use parts or devices from its own catalogue. The jointly developed Designer Schematic and Designer Layout tools are available exclusively from Digi-Key. Designer Schematic is available starting at $199 ($299 after the introductory period). Designer Layout starts at $449 ($649 per year going forward). A free 15 day trial is offered. Complete article, here 6 EDN Europe | DECEMBER 2014 www.edn-europe.com


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