SerialTek DEVSLP Logic Adapter
The BusXpert Logic Adapter serializes and transmits 24 logic signals to a BusXpert analyzer, enabling capture of both logic signals and serial data simultaneously. The BusXpert Software displays the captured logic signals and serial protocol side-by-side, making it easy to view the timing relationship between them. The Logic Adapter transmits the serialized logic to the analyzer initiator port via a standard SATA cable, or to the target port via a SATA crossover cable. The BusXpert Analyzer can trigger on any combination of logic and/or serial data.
Logic Adapter Channels
The logic adapter’s input signals are organized into three groups of eight signals (23-16, 15-8, and 7-0). The threshold voltage for each group can be set by the user. Available voltage thresholds are: 0.9, 1.0, 1.1, 1.2, 1.4, 1.7, 2.0, and 2.5 volts. Each group has a separate ground pin for improved signal integrity.
The BusXpert Logic Adapter has built-in support for the SATA DEVSLP (Device Sleep) signal, which is defined in the SATA specification and used to place drives into an extreme low-power state. The DEVSLP signal itself is a slowly rising active-high signal that is assigned to a previously unused pin in the SATA power connector. The BusXpert Logic Adapter assigns input channel 23 to the DEVSLP signal, however users may reassign the signal for their own purposes. Special circuitry ensures that the slow rise of the DEVSLP signal will not cause false triggers.
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