JAJSC85G March 2016 – May 2018 AM5716 , AM5718
PRODUCTION DATA.
The main reference clock REF_CLK (RMII_50MHZ_CLK) of RMII interface is internally supplied from PRCM. The source of this clock could be either externally sourced from the RMII_MHZ_50_CLK pin of the device or internally generated from DPLL_GMAC output clock GMAC_RMII_HS_CLK. Please see the PRCM chapter of the device TRM for full details about RMII reference clock.
CAUTION
The I/O Timings provided in this section are valid only for some GMAC usage modes when the corresponding Virtual I/O Timings or Manual I/O Timings are configured as described in the tables found in this section.
Table 7-75, Table 7-76 and Figure 7-56 present timing requirements for GMAC RMIIn Receive.