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USB 3.1 protocol analyser includes Power Delivery exerciser

16 Oct 2015

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Teledyne LeCroy has announced a major enhancement to its Voyager M310C SuperSpeed USB 3.1 protocol verification platform. A comprehensive Power Delivery (PD) exerciser capability is available for developers to verify functionality, error recovery, and compliance for PD chipsets and end-products, noted the company.

Intended for the growing adoption of the USB Type-C connector, this software release adds several enhancements for PD debug including PD triggering, event stacking, transaction grouping and Verification Script Engine (VSE).

Integrated in Teledyne LeCroy's flagship Voyager M310C USB 3.1 test platform, the PD exerciser supports traffic generation including both provider and consumer device emulation. The script-based authoring environment provides pre-defined templates for all PD packet types. Overrides can be added inline to allow low-level control of headers, payloads, timing, or logical protocol errors within the PD communication channel. Advanced functions including If/Else, Wait and Do Case allow emulating complex PD behaviours including contract negotiation and power role swaps.

The exerciser mode features PD Transaction Manager that automatically handles transaction layer handshaking to speed test script development. This mode will track MessageID fields and perform the GoodCRC handshakes allowing PD transactions to occur dynamically. Flexible control for resistor voltages (Rp/Rd/Ra), as well as programmable VCONN and vBUS settings allow precise testing of cable detection and orientation logic. The exerciser can operate as a full 100W source and 5A sink (with external load).

The Voyager M310C exerciser uses standard USB Type-C cables directly connected to the system-under-test (SUT) to generate PD 2.0 as well as USB 3.1 SuperSpeed Plus traffic. Generating and capturing both USB and PD traffic over the same cable allows testing the entire enumeration sequence including the PD class specific descriptors.

USB Protocol Suite Version 7.20 is now shipping with the Voyager M310C system that enables the PD mode for exerciser customers. Voyager M310 users that have previously purchased the USB 3.1 exerciser option can access the PD exerciser by updating to USB Protocol Suite Version 7.20.

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