USB Complete fourth- P11 pdf

... only the information transferred in the data packet (USB 2.0) or Data Packet Payload (SuperSpeed), excluding PID and CRC bits. USB 2.0 and USB 3.0 require interrupt endpoints in a default interface ... packet (USB 2.0) or Data Packet Payload (SuperSpeed), excluding PID and CRC bits. If the data doesn’t fit in a single packet, the host completes the transfer in mul- tiple transactions. W...

Ngày tải lên: 04/07/2014, 07:20

... NET2272 . . . . . . . . . . . . . . . . . . . . . . . . . 157 FTDI USB UART and USB FIFO. . . . . . . . . . . . . . . . . . . . 159 USB Complete: The Developer’s Guide, Fourth Edition by Jan Axelson Copyright ...  Microchip PIC18F4550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Cypress EZ -USB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 AR...

Ngày tải lên: 04/07/2014, 07:20

... transac- tions. To the device, the transaction is no different than a transaction with a USB 1.x host. The USB 2.0 or USB 3.0 hub nearest the device initiates transac- tions with the device and returns ... not the transfer has a Data stage, and if so, in which direction the data will travel. The USB 2.0 and USB 3.0 specifications define standard requests. Successful enumeration requ...

Ngày tải lên: 04/07/2014, 07:20

... properties. 7RFCVKPI&GUETKRVQTUVQ75$ To update descriptors for a USB 1.x device to USB 2.0, all except some devices that have isochronous endpoints require just one change: in the device descrip- tor, bcdUSB must be 0200h or greater. ... bDescriptorType 1 DEVICE CAPABILITY (10h) 2 bDevCapabilityType 1 01h = Wireless USB 02h = USB 2.0 EXTENSION 03h = SUPERSPEED _USB 04h = C...

Ngày tải lên: 04/07/2014, 07:20

... energy. A USB IrDA bridge converts between USB and IrDA data and enables a host to use USB to monitor, control, and exchange data over an IrDA interface. &QEWOGPVCVKQP The specification for USB ... subclass. UFI uses the UFI Command Specification from www .usb. org. The commands are based on the SCSI-2 and SFF-8070i command sets. The USB- IF’s USB Attached SCSI Protocol (UASP)...

Ngày tải lên: 04/07/2014, 07:20

... Using WinUSB for Vendor-Defined Functions 349 2$2 For PICBASIC PRO firmware for WinUSB, visit my website (www.Lvr.com). % The Microchip USB Framework provides WinUSB firmware for the PIC18F4550 ... transfers. Using WinUSB for Vendor-Defined Functions 353 Use Dim ifaceDescriptor As USB_ INTERFACE_DESCRIPTOR Dim success As Boolean success = WinUsb_QueryInterfaceSettings _ (myDevInfo.winU...

Ngày tải lên: 04/07/2014, 07:20

... Definitions <DllImport("winusb.dll", SetLastError:=True)> Friend Shared Function WinUsb_Free _ (ByVal InterfaceHandle As IntPtr) _ As Boolean End Function Use WinUsb_Free(myDevInfo.winUsbHandle) myDevInfo.deviceHandle.Close() 8% Definitions ... Function Use WinUsb_Free(myDevInfo.winUsbHandle) myDevInfo.deviceHandle.Close() 8% Definitions [DllImport("winusb.dll",...

Ngày tải lên: 04/07/2014, 07:20

... should use a USB interface? Find out whether your device should use USB or another interface. If the choice is USB, you’ll learn how to decide which of USB s four speeds—including USB 3.0’s SuperSpeed—and ... other USB devices? Find out how to develop a host for an embedded system or a USB On-The-Go device that can function as both a USB device and a limited-capability host tha...

Ngày tải lên: 04/07/2014, 07:20

... option with the release of USB 2.0, and USB 3.0 defined SuperSpeed. 4GNKCDNG USB s reliability is due to both the hardware and the protocols. The hardware specifications for USB drivers, receivers, ... flexibility built into the USB protocol, the support in the controller chips and operating system, and the support available from the USB Implementers Forum. 8GTUCVKNG USB s four tr...

Ngày tải lên: 04/07/2014, 07:20

... hub and embedded devices each have a unique address. A USB 3.0 hub is a special case. The hub contains both a USB 2.0 hub function and a USB 3.0 hub function. A composite device has one bus address ... or be hard-wired to peripheral circuits. For USB, each downstream-facing connector on a hub represents a USB port. Host applications can’t access USB ports directly but instead commu...

Ngày tải lên: 04/07/2014, 07:20