Keysight N8811A I2S Protocol Triggering and Decode for Infiniium Series Oscilloscopes Find and debug intermittent errors and signal integrity problems faster Data Sheet 02 | Keysight | N8811A I2S Protocol Triggering and Decode for Infiniium Series Oscilloscopes - Data Sheet Features: –– I²S serial bus triggering –– I²S software-based protocol decoding –– User-selectable signal alignment selections –– Support for Time Division Multiplex (TDM) I²S (Inter-IC Sound or Integrated Interchip Sound) is an electrical serial bus interface standard used for connecting digital audio devices together such as compact disc, digital audio tape, digital sound processors and digital TV sound. Traditional methods of debugging serial buses, such as I²S, include the visual technique of manual bit counting. This method is not only tedious but is also prone to critical errors and inaccuracies compared to using professional software. Keysight Technologies, Inc. serial bus applications for Infiniium oscilloscopes not only offer powerful triggering but also provide unique software-accelerated decoding to help you accurately debug audio designs with the I²S bus. With the N8811A I2S protocol triggering and decode application, you can now easily find and decode these errors and signal integrity problems with confidence. Figure 1. Decoding a TDM I²S signal. In this example, 16-bit data (yellow trace) was sent through four channels. 03 | Keysight | N8811A I2S Protocol Triggering and Decode for Infiniium Series Oscilloscopes - Data Sheet Through the I2S protocol triggering and decode application for Infiniium oscilloscopes, you can view your decode results easily in a lister display format. Figure 2. TDM I²S signal in split-screen format. Figure 3. TDM I²S signal with an unexpected end of packet error. The I2S protocol triggering and decode application for Infiniium allows you to easily search for an error through the Trigger On Search and Stop On Trigger options. 04 | Keysight | N8811A I2S Protocol Triggering and Decode for Infiniium Series Oscilloscopes - Data Sheet Flexibility, with confidence With triggering audio channel support for audio left, audio right, standard I2S and TDM, the N8811A I2S protocol triggering and decode software’s flexibility is unparalleled. In addition to the breadth of alignment options, you can quickly and easily customize the transmitter and receiver word size, word select, clock edge direction and decoded base. Figure 4. The protocol decode dialogue box has a breadth of options. Use auto setup to decode immediately or manual setup to customize even more. Hassle-free results Set up your scope to show I²S protocol decode in less than 30 seconds. The I²S Protocol Triggering and Decode for Infiniium enables you to interpret results effortlessly by displaying both a readable table and a color-coded waveform. Use the pattern search menu to painlessly search for packets or errors while data is being captured and decoded. Use “trigger on search” to display only captured data that matches your search specification and “stop on trigger” to stop capturing data after the first packet search specification is found. 05 | Keysight | N8811A I2S Protocol Triggering and Decode for Infiniium Series Oscilloscopes - Data Sheet Performance Characteristics I2S protocols supported I2S source Configuration options Triggering Autoset Standard I2S, left-justified, right-justified, TDM Analog channels 1, 2, 3 or 4 Digital channels D0-D15 (on MSO models) Waveform memories Transmitted/Received word size (4 to 32) Alignment – Standard I2S, left-justified, right-justified, or TDM Word select/Frame sync edge direction – Rising or falling Clock edge direction – Rising or falling Display base – Hex, signed decimal, or binary I2S protocol triggering Errors –– Transmitted word size error –– Any error I2S packet –– = (Equal to entered data value) –– ≠ (Not equal to entered data value) –– < (Less than entered data value) –– > (Greater than entered data value) –– >< (Within range of entered data values) –– <> (Out of range of entered data values) –– Increasing value that crosses armed (<=) and trigger (>=) entered data values –– Decreasing value that crosses armed (>=) and trigger (<=) entered data values Automatically configures oscilloscope for proper I2S decode and protocol triggering Ordering Information Application License type I2 S protocol Fixed Factory-installed User-installed Floating Transportable Server-based Infiniium Infiniium 9000 S-Series Series Not N8811A-1FP available Notes: –– Requires software 5.60 and above. –– Hardware-based serial triggering for S-Series only. Infiniium Infiniium Infiniium 90000A V-Series Z-Series Series DSO90000-095 N8811A-1FP N8811A-1FP N8811A-1FP N8811A-1TP N5435A-105 06 | Keysight | N8811A I2S Protocol Triggering and Decode for Infiniium Series Oscilloscopes - Data Sheet www.axiestandard.org AdvancedTCA® Extensions for Instrumentation and Test (AXIe) is an open standard that extends the AdvancedTCA for general purpose and semiconductor test. The business that became Keysight was a founding member of the AXIe consortium. ATCA®, AdvancedTCA®, and the ATCA logo are registered US trademarks of the PCI Industrial Computer Manufacturers Group. www.lxistandard.org LAN eXtensions for Instruments puts the power of Ethernet and the Web inside your test systems. The business that became Keysight was a founding member of the LXI consortium. www.pxisa.org PCI eXtensions for Instrumentation (PXI) modular instrumentation delivers a rugged, PC-based high-performance measurement and automation system. 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