Datasheet

6.5.5.5 MII/RMII Serial Management channel timing (MDC/MDIO)
Output load is equal to 45 pF and pad settings are SIUL2_MSCRn[DSE] = 101 and
SIUL2_MSCRn[SRE] = 11.
NOTE
These are not necessarily the default configuration after chip
resets. You must ensure the above chip configuration to match
the measurements in this section.
Ethernet works with a maximum frequency of MDC at 2.5 MHz. ENET_MSCR
[HOLDTIME] should be set to 010 when Module Clock = 133 MHz. MDIO pin must
have external pull up.
Figure 41. MDIO input timing
Figure 42. MDIO output timing
Table 47. MDIO interface timing specification
ID Parameter Symbols Min Max Unit
MDCO Clock Duty Cycle t
MDC
40 60 %
Table continues on the next page...
Ethernet Controller (ENET) Parameters
S32V234 Data Sheet, Rev. 8, 01/2019
NXP Semiconductors 57