Preliminary Design Review Ka Hing Chan EE 396 Project October 7, 2006

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Preliminary Design ReviewKa Hing ChanEE 396
ProjectOctober 7, 2006
USB iTASK Part 1
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Overview

• To design a USB device to read in different USB
  devices, pass data packets to the PC, and send
  data packets from PC to PC.

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Overview
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Module

• Concentration is only on getting the
  microprocessor and the USB to communicate with
  the PC.

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Specification

• USB MAXIM MAX3421E controller
• USB Peripheral/Host Controller with 26MHz SPI
  Interface
• Complies with USB Specification Revision 2.0
• Full-Speed of 12Mbps
• Low-Speed of 1.5Mbps
• Temperature of -40 to 85 C

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Specification

• USB MAXIM MAX3421E controller
• Self Powered Peripheral Applications
• Interrupt Output Pin
• Allows Polled
• Interrupt-Driven SPI Interface
• 8 General-Purpose of Input and Output
• Handles Low-Level USB Signaling
• TQFP package (5mm x 5mm)

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MAX3421E
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Specification

• ET-ARM7 STAMP
• 16/32-Bit ARM7TDMI-S
• Crystal 19.6608 MHz with 58.9824 MHz maximum
  speed
• Supporting In-System programming (ISP)
• 3.3V Power Supply

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Specification

• ET-ARM7 STAMP
• 128 KB Flash Memory and 16KB Static Ram
• Maximum 46 I/O Pins
• 2-ch. SPI
• Temperature of -40 to 85 C
• Cost 111.60

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ET-ARM7 STAMP
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Circuit
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Programming Software

• KEIL C Compiler
• The cost of the software is expensive
• Education purpose around 400
• Lots of development tools
• Library is bigger
• Open Source Compiler
• Not as much development tools
• It is free
• Library is smaller
• Writing my own library

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To be Done

• Circuit layout
• Using the ARM START to do the circuit
• Make PCB board
• Understanding the functions of USB and ET-ARM7
• Programming
• Debugging

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Potential Problems

• Writing the program
• Not understanding the microprocessor
• Not understanding the USB microprocessor
• HID protocols
• Sending and reading data packets
• Not be able to finish it on time

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Timeline
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Questions?
USB iTASK Part 1

• Visit my website at
• http//www2.hawaii.edu/kahing
• Thank You!!!

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