Agilent scopes can decode USB 3.0 SSIC and MIPI CSI-3

January 09, 2014 // By Graham Prophet

SSIC is used for point-to-point communication between chips using the USB 3.0 protocol. The SSIC standard was developed by the USB-IF standards body, building on the MIPI Alliance MIPI M-PHY electrical layer to transfer USB 3.0 protocol. It allows USB 3.0 intellectual property and designs to be adopted into mobile applications.

The CSI-3 standard is the next-generation camera interface, developed by the MIPI Alliance to increase performance throughput and enable a greater feature set than the current CSI-2 standard. It also has better power-per-bit efficiency than the previous specification. The CSI-3 interface runs on top of the MIPI UniPro protocol layer as well as the MIPI M-PHY electrical layer.

Agilent’s N8819A USB 3.0 SSIC and N8820A MIPI CSI-3 protocol decoders run on 90000A, 90000 X- and 90000 Q-Series oscilloscopes. They decode protocol packets for the SSIC v1.0 and MIPI CSI-3 v1.0 specifications, respectively. In addition to using the software for start-up debugging, R&D design and validation teams can use the software to snoop at traffic on the interfaces. They also provide accurate timing measurements associated with the protocols.

The software supports:

Correlated protocol decode information with the analogue waveforms

Symbol, packet, frame and payload detail of the protocols

High-speed (HS-BURST) and low-speed pulse-width modulation (PWM-BURST) transmission modes

Cyclical redundancy check (CRC) on the packets

Search capability for various frames, sequence and errors

Engineers can use both protocol decoders on Infiniium 90000 Q-Series oscilloscopes, with real-time bandwidth of up to 33 GHz on four channels, which makes them suitable for testing devices that use today’s MIPI M-PHY data rates of 5.8 Gbps and for devices with data rates up to 11.6 Gbps, which is the next projected speed increase. With bandwidth upgradability to 63 GHz and the lowest noise and jitter measurement floor performance, the oscilloscopes ensure superior measurement accuracy.

Used together with N2809A PrecisionProbe software, the protocol-decode software increases design margins and gives engineers increased confidence in their product performance.