Stephen Browning Email & Phone Number

Chandler, Az

Flash Module Firmware Design and Development• Design and development at various layers of the Flash Controller stack for Enterprise SSD products, from host protocol front end to Flash Controller Module.• As a part of the FW development team, I contributed to the successful release of four products and was instrumental in the design, architecture , implementation and debugging in each product’s entire life cycle.• All products were bare metal implementations running on ARM R5 cores as part of an SoC ASIC chip.• I was involved with all aspects of the Flash Controller layer and Flash Module FW, including boot process and initialization as well as command and data processing and auditing operations.• I Developed unit tests using PUnit and CppTest, as well as continuous integration tests using scripts in a Python test framework, driving a para-virtualized hardware model running firmware under test.

Firmware Team - Medical Device InterfacePorting existing emulation software from Windows MFC environment to Linux using Qt application framework.Work involved a combination of RTOS and GUI development and user space drivers for USB devices. Git was used for source control.

Chandler, Arizona

Security Software Team – Service Provider Division (Set Top Boxes) • Implemented security specific enabling technologies such as Conditional Access and DRM. • Implemented Conditional Access driver and performance measurement framework for the Security Firmware.Core Software Development Team – Digital Home Group • Developed audio driver for Media Processor SOC in an embedded Linux environment. • Implemented support for HDMI Audio capture and secure DSP firmware loading. • Solved customer issues related to audio driver.Software Development – Embedded Group • Cross discipline team supporting several market segments. Implemented solutions using Embedded IA *T technologies, such as AMT and VT. • Engineering resource for resolving escalated customer technical issues. • Implemented Linux device driver for embedded ethernet packet accelerator for new network processor design.SCU Device Driver Team – Storage Group • Implemented Linux device driver for Storage Controller Unit in Intel chipset. • Implemented interface to the Linux SCSI stack using the Linux SAS libraryRaid On Load Proof of Concept - Storage Group • Implemented new design incorporating Intel Virtualization Technology to host Raid stack on sequestered core running Hardware Virtualized Machine dedicated to IO operations (IOVM). • Implemented Linux driver as part of the MD Raid stack. • Provided direction, training and code support, related to Linux development, to other team members.Tools and Application Engineering - Storage Group • Implemented Serial Attached SCSI Linux driver. • Supported customer efforts in porting driver to different kernel versions. • Developed block driver performance model and analysis tool.Advanced Development Engineering - Storage Group • Implemented iSCSI Linux driver for Intel XScale processor on embedded platform. • Port Intel IoAT support to Linux DMA driver, for this project.

Chandler, Arizona

Advanced IP Development • Developed voice mail application for Inter-Tel 5000 IP Phone System. Working in both a cross platform and native i686 linux build environments. • Ported arm based voice mail application to i686 PC environment. Implemented TCP/IP communications between embedded system and PC voice mail application. ​ Endpoint Sustaining Engineer ​ ▪ Maintained and developed VOIP telephone endpoints and IP resource cards running VXWorks, Ecos, WinCE and proprietary OS's on Broadcomm VOIP chips with the MIPS3000 core, Motorola Coldfire and 68032 processors. ​

Chandler, Arizona

System Validation Tools SupportDevelopment of software tools for stress testing of Intel’s XScale IO Processor, an ARM based SoC. This project involved writing code to exercise the DMA and Memory Controller Unit by programming device configuration registers through the PCI bus, using the Address Translation Unit. Developed and debugged on several platforms, including the SLE environment. Developed various levels of the Turmoil stress test code including boot code. • Developed test and validation of end of transmission interrupts for individual DMA descriptors. Exposed sighting involving race condition on the internal bus. • Implemented memory parameter variation in system stress test. Exposed sighting involving internal bus preemption during DMA transfers. • Designed ECC error injection for system stress test. Involved much low level and assembly work. • Implemented code for testing in multi-core environments, utilizing inter-processor communication techniques, including interrupts and message passing.

Las Vegas, Nevada

Reel Spinning Slot Machine. • Maintained and debugged code on 68000 platform running VRTX OS. Developed new modules including RS232 drivers and protocol, display driver, system initialization and configuration and other low level projects. ​

Mountain View, California

Development of Network Offload Technology.Developed code for network blade server running Linux with I2O inet protocol driver. Implemented the TCP/IP protocol stack on intelligent network card using an Intel 80200 XScale ARM processor. • Debugging the network interface card using logic analyzers, PCI bus analyzer, JTAG debugger etc... • Developed various self test and configuration routines for XScale 80200 processor, 80312 IOP chipset, memory DIMMs, GigE MAC and PCI bridge. • Designed Linux GigE network driver for offload NIC. • Enhanced TCP/IP stack and network driver to implement checksum offload in hardware. • Developed, debugged and optimized embedded RTOS on offload NIC. • Resolved many performance issues with network card BSD stack, including compatibility problems with Linux TCP/IP implementation running on host PC system.

San Antonio, Texas

Embedded and device driver developer for audio products.

Oklahoma City, Oklahoma

GUI design for Audio Signal Processor. Developed code for GUI interface used to control and configure DSP based professional audio product.Audio Signal Mixer/ Router on Motorola 68000 and Dos based Host interface application.Paging system based on the 68000, used to route audio to one or multiple destinations. The system also offered control and monitoring of other signals such as temperature, voltage levels and contact closures. Control panels consisted of Motorola 68HC11 devices on a multi-drop RS485 LAN running proprietary protocol.