WM8Zi-I2Cbus TD

• I2C, SPI, UART and RS-232 Trigger and Decode
• Color-coded decode overlaid on the waveform is intuitive and easy to read
• Powerful and flexible conditional DATA triggering (=, <, <=, >, >=, <>, in range, out ofrange)
• Hex, Binary or ASCII decoding
• Decode information expands as the timebase is adjusted or zoomed
• Convenient table display with quick "zoom to message" capability
• Quick search capability for specific messages
• Set an ACK condition (ACK,NO ACK, Don’t Care) in all frame trigger setups (I2C)
• Decode does not require clock trace to be displayed (I2C, SPI)
• Supports UART address (9-bit) Byte triggering
• Supports trigger and decode of user defined proprietary protocols based on a UART backbone

Advanced software algorithms decon struct the waveform into protocol information, then overlay the decoded data on the waveform. Decode information condenses or expands depending on the timebase/zoom ratio setting, so understanding messages is easy. Various sections of the protocol are color-coded to make it easy to understand, especially for users new to I2C, SPI, UART, and RS-232 serial data. The decode operation is fast—even with long acquisitions. The user can choose to decode into Hex, Binary, or ASCII formats.

LeCroy’s decode algorithms allow the CLOCK signal to be input to the external channel, which saves valuable channels for other signals. Or, if the CLOCK signal is input to a channel, it can be turned OFF as desired to reduce display clutter.

Completely isolate specific I2C, SPI, UART, or RS-232 message events for better understanding and debug. Use a conditional DATA trigger to select a range of DATA values to trigger on, not just a single DATA value. Oftentimes, I2C utilizes DATA bytes to specify sub-addresses for accessing memory locations in EEPROMs. Condi tional DATA trigger allows triggering on a range of DATA bytes that correspond to reads or writes to specific sub-address memory blocks in the EEPROM. It can also aid in monitoring DATA outputs from I2C-based sensors, such as analog-todigital con verters, and triggering when DATA is outside a safe operating range. In both cases, verifying proper operation becomes a simple task. Of course, all the basic I2C and SPI triggering capability you would expect is also included.

Complete support for any configuration of UART and standard RS-232. Generic UART is commonly used as the backbone for proprietary protocols, and the flexible setup configuration allows definition to meet your exact need.

Simultaneously decode up to 4 serial data buses. When using the MSO option on WaveRunner Xi or WaveSurfer Xs the digital inputs D0, D1, D2, etc. can be used as the source for a serial data trigger and decode.

I2C, SPI, and UART all have special use cases and the LeCroy Trigger and Decode solutions address these cases. The I2C trigger can be configured for 7 or 10-bit addressing with out without inclusion of the R/W bit. The SPI trigger can be configured for a range of CPOL and CPHA settings as well as the Simplified SPI protocol. With the UART trigger 8 and 9-bit (8+1) formats are supported.

Display your values in an easy-to-understand table. Touch a row to zoom, or export to Excel with one button push.

Turn your oscilloscope into a protocol analyzer with the Table display of protocol information. Custom configure the Table to display only the infor mation you want, and export Table data to an Excel file. Touch a message in the table and auto matically zoom for detail. In all cases, the Table never obscures your waveform data.

Search through long record of decoded data by entering the message or address you are looking for and clicking the right or left search arrows.

I2C, SPI, UART, and RS-232 messages can be quickly located by search ing on Address (I2C) or DATA (I2C, SPI, UART, RS-232). Pressing an arrow button advances the single zoomed message view one message to the right or left of the current message.