Protocol analysis
R&S
®
RTP
790User Manual 1337.9952.02 ─ 12
Figure 13-20: Serial bus MDIO protocol configuration dialog
See also: Chapter 13.1.1, "Setup - general settings", on page 512
Source
MDIO requires two source channels, one for clock and one for data.
"Clock"
Defines the source settings for the clock line (management data
clock, MDC). Typically, select any of the analog channels "C1" – "C4"
or digital channels "D0" – "D15", depending on the test application.
"Math" or "Ref" waveforms are also permitted.
"Data"
Defines the source settings for the data signal. Typically, select any of
the analog channels "C1" – "C4" or digital channels "D0" – "D15",
depending on your application, but not the same as for "Clock".
"Math" or "Ref" waveforms are also permitted.
Remote command:
BUS<m>:MDIO:CLOCk:SOURce on page 1990
BUS<m>:MDIO:DATA:SOURce on page 1990
Thresholds
MDIO defines two thresholds for each source line:
●
Vih(min) is being used for the rising edge evaluation. This "h" (high) threshold is
the minimum value for the signal to be identified as "1". If the signal value comes
from a low state (hence, rising edge), the state remains to be considered as low
("0"), until it has risen above Vih(min).
MDIO (option R&S
RTP-K55)
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