R8051XC-CUSB2 as Evatronix USB connectivity subplatform

Today’s engineering efforts in IP/SoC design methodology aim at time-to-market reduction. There is strong tendency to develop solutions that are both configurable and easy-to-use.

Evatronix is using its strengths to handle this task by grouping components in subplatforms. It guarantees full compatibility of incorporated parts without a minute spent on their integration and therefore contributes to considerable reduction of time needed to launch the product.

R8051XC-CUSB2 reference design

Evatronix USB subplatform was applied in a USB Video Camera controller design. Our solution is refined in every hardware and software element. You can just plug in a CCD sensor and a microphone and your USB Video Camera is ready to go.

Usage of the USB subplatform in the USB Video Camera device makes it easily customizable to specific application requirements thanks to high configurability of the subplatform as well as a software stack. It’s worth mentioning that an interesting solution at an operational level has been applied in this complex design. Thanks to CPU offloading, it can work on the other customer application tasks, instead. It’s a result of hardware support for audio and video streaming.

The device configurability in terms of functionality is also evidenced by firmware upload and upgrade options. In practice it means that you can download a new firmware to your USB Video Camera via USB interface or load it from EEPROM.

The key of this complete solution is integration of three complementary elements in one system:

• hardware - well-known 8051-family microcontroller (R8051XC) with its low-cost and configurability advantages together with USB2.0 connection (CUSB),
• software - covering rich functional features of a USB Video Camera device, with an additional possibility to customize a range of the functionality of the camera according to customer requirements,
• evaluation board - Evatronix mature and proven EB5, ready to be tested with any USB solution.

The design itself is highly configurable. A configuration GUI with its easy “push-button” configuration makes it easily customizable to specific customer requirements.

• standard requests
  • an enumeration procedure,
• class-specific requests
  • band-width negotiation,
  • video format selection,
  • on/off video switch,
  • video parameters control (brightness, sharpness, contrast),
  • Extension Unit control (for CCD sensor, software download, SFR access)
  • HID control.

An implemented flash downloader enables software updates via a flash memory module. Contents of the flash memory is downloaded to built-in memory and replaces the firmware.
Device controller driver, as shown on the right, is the software interface provided to access a USB controller.

EB5 Evaluation Board Xilinx VirtexII FPGA (XC2V3000 FF1152) physical layers & connectors: USB 2.0 OTG supports USB2.0 & USB1.1 device controllers Ethernet 10/100/1000 RS-232, CAN, I2C, 8 pairs of unassigned connectors extensions four expansion headers with 180 general-purpose I/O debug support Nexus 5001 Debug Support interface connectors for scopes & digital analyzers T&MT compliant

PHY Extension Board USB PHY extension board meets the USB 2.0 Transceiver and Macrocell Tester (T&MT) Interface specification. It is used to perform PHY interoperability testing for any UTMI/ULPI compliant USB transceiver. UTMI / UTMI+ / ULPI compliant legacy USB1.1 compliant T&MT compliant

The ICE hardware - EDP The Evatronix Debug Puck (EDP) hardware allows to control user program execution at R8051XC processor via OCDS unit built in the R8051XC. JTAG interface for communication with R8051XC OCDS unit the USB 2.0 interface for communication with the PC

Summary
If you need ready-to-use pre-verified components to your SoC design, choose our USB subplatforms. Its verified IP cores and software including rich set of features, as well as fully functional evaluation board useful for development testing and certification of the USB devices dramatically reduce development effort for the USB devices and gives you satisfaction of first-run success.