Data Sheets
Keysight N8835A
eSPI Protocol Trigger and Decode For Infiniium Oscilloscopes
Data sheet
This application is available in the following license variations
Easily debug and test designs that include eSPI protocol using your Infiniium oscilloscopes
Enhanced Serial Peripheral Interface (eSPI) is developed by Intel as a successor to its Low Pin Count (LPC) bus. So it can carry out not only legacy SPI data, but also Embedded Controller (EC), Baseboard Management Controller (BMC) and Super-I/O. This standard allows designers to use 1-bit, 2-bit, or 4-bit communications at speeds from 20 to 66 MHz to further allow designers to trade off performance and cost.
Extend your scope capability with eSPI triggering and decode application. This application makes it easy to debug and test designs that include eSPI protocols using your Infiniium oscilloscopes.
Easy to find
Turn decode on/off via the “Serial Decode” button on the front of the instrument or in the “Setup” menu. View decode embedded on the waveform display or in the protocol viewer listing window.
30-second eSPI setup
Configure your oscilloscope to display protocol decode in less than 30 seconds. Use “Auto Setup” to automatically configure sample rate, memory depth and threshold and trigger levels.
Support for both analog and digital channels
Acquire serial buses using any combination of scope or digital channels. Using digital channels on MSO models preserves analog channels for viewing other time-correlated signals.
eSPI Protocol Triggering and Searching
Get access to a rich set of integrated protocol level triggers. The application includes a suite of configurable protocol-level trigger conditions specific to eSPI. When serial triggering is selected, the application enables special real-time triggering hardware inside the scope 1. Hardware-based triggering ensures that the scope never misses a trigger event when armed. This hardware takes signals acquired using either the oscilloscope or digital channels 2 and reconstructs protocol frames. It then inspects these protocol frames against specified protocol-level trigger conditions and triggers when the condition is met.
eSPI Protocol Decode
eSPI protocol decode with precise time-correlation between waveforms and listing
The Keysight Technologies, Inc. eSPI protocol viewer includes correlation between the waveforms and the selected packet. The selected packet (highlighted blue row in the listing) is time-correlated with the blue line in the waveform display. Move the blue tracking marker in time through waveforms, and the blue bar will automatically track in the packets window. Or scroll through the packet viewer and highlight a specific packet. The time-correlation tracking marker will move to the associated point in the waveform.
Support for Single, Dual and Quad Input/Output(I/O) mode
The application supports Single, Dual and Quad I/O mode eSPI. Use digital channels on MSO models to preserve analog channels for simultaneously viewing other signals.
eSPI decode embedded in waveform
Utilize the oscilloscope waveform area to display decode information. For eSPI, Single I/O mode displays each of Host/Slave line. Dual and Quad mode, which support more than one slave, show decoded data on clock signal.
Full screen eSPI listing
Fill the entire display with compact protocol information using the full screen listing. The protocol viewer window shows the index number, time stamp value, and data content for each serial packet in the list. Scroll though all decoded serial packets to find events of interest or errors in the transmission. Data in the listing window can be saved to a .csv or .txt file for offline analysis or documentation.
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