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Protocol analysis
R&S
®
MXO 5 Series
306User Manual 1802.3369.02 ─ 02
8. Set "MOSI polarity"/"MISO polarity" to "Active high"(CPHA = 0) or "Active
low"(CPHA = 1).
9. Set "CS polarity" to "Active high" or "Active low".
The typical value is "Active low", which means that the line is pulled low on mes-
sage start.
10. Set the "Word length". The typical value is 8.
11. Check that the signals are on the screen.
If not try adjusting the vertical and horizontal settings.
12. Set the logical thresholds:
a) Tap "Threshold setup". The threshold dialog opens.
b) For each wire, set the threshold value. A typical value is 1.65 V.
c) If necessary, set the hysteresis value for the wires.
d) Optionally, tap on "Show threshold lines".
SPI bus (option R&S MXO5-K510)
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