USB 3.0 验证、除错和相容性解决方案

Mastering USB Physical Layer Validation Tektronix USB Testing Solutions Introduction

Sarah Boen

Silicon Phase Integration Phase

Deployment Phase

Tektronix Test Solution Updates

Source: USB 3.0 Rev 1.0 Specification

At Far End of Channel

TP1’CTLE

Source: USB 3.0 Rev 1.0 Specification

Source: USB 3.0 Specification

Cable

VBUS

Tx Channel

Rx Channel

USB3_Rx

USB3_Tx

Tx Channel Rx Channel

Tx Channel Rx Channel

Rx Channel

Ellisys USB Explorer 280

SuperSpeed USB 3.0 Protocol Analyzer and Traffic Generator

Typical Host Emulation Setup

with Protocol Analyzer

Typical Protocol Analyzer Setup

Wireless USB
•
Wireless USB Applications
– Short-range communication for the transmission of large amount of data
• • • Point-to-point Access point between WUSB host and peripheral Up to 127 devices
&/or &/or &/or
IP
WiMedia UWB Radio Platform MAC and Policies WiMedia PHY (MB-OFDM)
PAL: Protocol Adaptation Layer
–
Leveraging unlicensed and existing licensed RF spectrum
• Low-power and frequency hopping signals to minimize interference
•
Challenges
– – Data throughput, bandwidth allocation Power management and security
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Tektronix Wireless USB Validation Solution
•
Easy to setup: Automatically detect Time Frequency Codes (TFCs) and data rates from the RF waveform header Demodulate, Analyze and Record measurements of each packet independently Perform Measurements Outlined in the Wireless USB EVM Test Specification Industry’s only MOI (Method of Implementation) for WiMedia test!
– WUSB EVM test is a subset of WiMedia PHY certification
•
•
•
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Powerful Debug Analysis
Analyze EVM Errors of Time and Frequency
• •
EVM versus Symbol: Debug symbols over time EVM versus Subcarrier: Debug EVM error over frequency
Correlate frequency and time domains with cursors linking amplitude versus time, frequency versus time and power versus frequency displays
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Tektronix USB Solution
Complete solution from PHY layer to Protocol for USB 2.0, 3.0 and Wireless USB
USB leadership: Tektronix is active in USB-IF Compliance Group and
USB 3.0 PIL and contributes to USB 3.0 specification
Cost Effective: Automation with a single box solution Connectivity: Measure closest to Tx output for true performance of
USB 3.0 device/host
Flexibility: Compliance, debug, characterization with software
channel emulation
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